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Add port of FreeBSD 'volmode' property
The volmode property may be set to control the visibility of ZVOL block devices. This allow switching ZVOL between three modes: full - existing fully functional behaviour (default) dev - hide partitions on ZVOL block devices none - not exposing volumes outside ZFS Additionally the new zvol_volmode module parameter can be used to control the default behaviour. This functionality can be used, for instance, on "backup" pools to avoid cluttering /dev with unneeded zd* devices. Original-patch-by: mav <mav@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Ported-by: loli10K <ezomori.nozomu@gmail.com> Signed-off-by: loli10K <ezomori.nozomu@gmail.com> FreeBSD-commit: https://github.com/freebsd/freebsd/commit/dd28e6bb Closes #1796 Closes #3438 Closes #6233
This commit is contained in:
LOLi
Brian Behlendorf
parent
e19572e4cc
commit
cf8738d853
@ -154,6 +154,7 @@ typedef enum {
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ZFS_PROP_LOGICALUSED,
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ZFS_PROP_LOGICALREFERENCED,
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ZFS_PROP_INCONSISTENT, /* not exposed to the user */
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ZFS_PROP_VOLMODE,
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ZFS_PROP_FILESYSTEM_LIMIT,
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ZFS_PROP_SNAPSHOT_LIMIT,
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ZFS_PROP_FILESYSTEM_COUNT,
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@ -394,6 +395,13 @@ typedef enum {
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ZFS_REDUNDANT_METADATA_MOST
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} zfs_redundant_metadata_type_t;
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typedef enum {
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ZFS_VOLMODE_DEFAULT = 0,
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ZFS_VOLMODE_GEOM = 1,
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ZFS_VOLMODE_DEV = 2,
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ZFS_VOLMODE_NONE = 3
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} zfs_volmode_t;
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/*
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* On-disk version number.
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*/
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@ -51,6 +51,7 @@ extern void zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
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extern int zvol_set_volsize(const char *, uint64_t);
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extern int zvol_set_volblocksize(const char *, uint64_t);
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extern int zvol_set_snapdev(const char *, zprop_source_t, uint64_t);
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extern int zvol_set_volmode(const char *, zprop_source_t, uint64_t);
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extern zvol_state_t *zvol_suspend(const char *);
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extern int zvol_resume(zvol_state_t *);
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extern void *zvol_tag(zvol_state_t *);
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@ -2076,6 +2076,18 @@ Max number of threads which can handle zvol I/O requests concurrently.
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Default value: \fB32\fR.
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.RE
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.sp
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.ne 2
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.na
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\fBzvol_volmode\fR (uint)
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.ad
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.RS 12n
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Defines zvol block devices behaviour when \fBvolmode\fR is set to \fBdefault\fR.
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Valid values are \fB1\fR (full), \fB2\fR (dev) and \fB3\fR (none).
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.sp
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Default value: \fB1\fR.
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.RE
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.sp
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.ne 2
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.na
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@ -1757,6 +1757,35 @@ when the pool is low on space.
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For a sparse volume, changes to
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.Sy volsize
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are not reflected in the reservation.
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.It Sy volmode Ns = Ns Cm default | full | geom | dev | none
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This property specifies how volumes should be exposed to the OS.
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Setting it to
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.Sy full
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exposes volumes as fully fledged block devices, providing maximal
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functionality. The value
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.Sy geom
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is just an alias for
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.Sy full
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and is kept for compatibility.
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Setting it to
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.Sy dev
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hides its partitions.
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Volumes with property set to
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.Sy none
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are not exposed outside ZFS, but can be snapshoted, cloned, replicated, etc,
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that can be suitable for backup purposes.
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Value
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.Sy default
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means that volumes exposition is controlled by system-wide tunable
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.Va zvol_volmode ,
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where
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.Sy full ,
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.Sy dev
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and
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.Sy none
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are encoded as 1, 2 and 3 respectively.
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The default values is
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.Sy full .
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.It Sy vscan Ns = Ns Sy on Ns | Ns Sy off
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Controls whether regular files should be scanned for viruses when a file is
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opened and closed.
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@ -245,6 +245,15 @@ zfs_prop_init(void)
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{ NULL }
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};
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static zprop_index_t volmode_table[] = {
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{ "default", ZFS_VOLMODE_DEFAULT },
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{ "full", ZFS_VOLMODE_GEOM },
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{ "geom", ZFS_VOLMODE_GEOM },
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{ "dev", ZFS_VOLMODE_DEV },
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{ "none", ZFS_VOLMODE_NONE },
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{ NULL }
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};
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/* inherit index properties */
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zprop_register_index(ZFS_PROP_REDUNDANT_METADATA, "redundant_metadata",
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ZFS_REDUNDANT_METADATA_ALL,
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@ -302,6 +311,10 @@ zfs_prop_init(void)
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zprop_register_index(ZFS_PROP_DNODESIZE, "dnodesize",
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ZFS_DNSIZE_LEGACY, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
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"legacy | auto | 1k | 2k | 4k | 8k | 16k", "DNSIZE", dnsize_table);
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zprop_register_index(ZFS_PROP_VOLMODE, "volmode",
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ZFS_VOLMODE_DEFAULT, PROP_INHERIT,
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ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME,
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"default | full | geom | dev | none", "VOLMODE", volmode_table);
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/* inherit index (boolean) properties */
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zprop_register_index(ZFS_PROP_ATIME, "atime", 1, PROP_INHERIT,
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@ -2440,6 +2440,9 @@ zfs_prop_set_special(const char *dsname, zprop_source_t source,
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case ZFS_PROP_SNAPDEV:
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err = zvol_set_snapdev(dsname, source, intval);
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break;
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case ZFS_PROP_VOLMODE:
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err = zvol_set_volmode(dsname, source, intval);
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break;
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case ZFS_PROP_VERSION:
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{
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zfsvfs_t *zfsvfs;
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@ -96,6 +96,7 @@ unsigned int zvol_threads = 32;
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unsigned int zvol_request_sync = 0;
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unsigned int zvol_prefetch_bytes = (128 * 1024);
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unsigned long zvol_max_discard_blocks = 16384;
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unsigned int zvol_volmode = ZFS_VOLMODE_GEOM;
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static taskq_t *zvol_taskq;
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static kmutex_t zvol_state_lock;
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@ -137,6 +138,7 @@ typedef enum {
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ZVOL_ASYNC_REMOVE_MINORS,
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ZVOL_ASYNC_RENAME_MINORS,
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ZVOL_ASYNC_SET_SNAPDEV,
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ZVOL_ASYNC_SET_VOLMODE,
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ZVOL_ASYNC_MAX
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} zvol_async_op_t;
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@ -146,7 +148,7 @@ typedef struct {
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char name1[MAXNAMELEN];
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char name2[MAXNAMELEN];
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zprop_source_t source;
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uint64_t snapdev;
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uint64_t value;
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} zvol_task_t;
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#define ZVOL_RDONLY 0x1
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@ -1593,6 +1595,13 @@ static zvol_state_t *
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zvol_alloc(dev_t dev, const char *name)
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{
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zvol_state_t *zv;
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uint64_t volmode;
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if (dsl_prop_get_integer(name, "volmode", &volmode, NULL) != 0)
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return (NULL);
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if (volmode == ZFS_VOLMODE_DEFAULT)
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volmode = zvol_volmode;
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zv = kmem_zalloc(sizeof (zvol_state_t), KM_SLEEP);
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@ -1626,6 +1635,22 @@ zvol_alloc(dev_t dev, const char *name)
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rw_init(&zv->zv_suspend_lock, NULL, RW_DEFAULT, NULL);
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zv->zv_disk->major = zvol_major;
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if (volmode == ZFS_VOLMODE_DEV) {
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/*
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* ZFS_VOLMODE_DEV disable partitioning on ZVOL devices: set
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* gendisk->minors = 1 as noted in include/linux/genhd.h.
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* Also disable extended partition numbers (GENHD_FL_EXT_DEVT)
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* and suppresses partition scanning (GENHD_FL_NO_PART_SCAN)
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* setting gendisk->flags accordingly.
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*/
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zv->zv_disk->minors = 1;
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#if defined(GENHD_FL_EXT_DEVT)
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zv->zv_disk->flags &= ~GENHD_FL_EXT_DEVT;
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#endif
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#if defined(GENHD_FL_NO_PART_SCAN)
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zv->zv_disk->flags |= GENHD_FL_NO_PART_SCAN;
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#endif
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}
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zv->zv_disk->first_minor = (dev & MINORMASK);
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zv->zv_disk->fops = &zvol_ops;
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zv->zv_disk->private_data = zv;
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@ -1692,6 +1717,9 @@ zvol_create_minor_impl(const char *name)
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int idx;
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uint64_t hash = zvol_name_hash(name);
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if (zvol_inhibit_dev)
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return (0);
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idx = ida_simple_get(&zvol_ida, 0, 0, kmem_flags_convert(KM_SLEEP));
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if (idx < 0)
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return (SET_ERROR(-idx));
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@ -2095,7 +2123,7 @@ zvol_remove_minors_impl(const char *name)
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taskq_wait_outstanding(system_taskq, tid);
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}
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/* Remove minor for this specific snapshot only */
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/* Remove minor for this specific volume only */
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static void
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zvol_remove_minor_impl(const char *name)
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{
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@ -2104,9 +2132,6 @@ zvol_remove_minor_impl(const char *name)
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if (zvol_inhibit_dev)
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return;
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if (strchr(name, '@') == NULL)
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return;
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mutex_enter(&zvol_state_lock);
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for (zv = list_head(&zvol_state_list); zv != NULL; zv = zv_next) {
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@ -2227,9 +2252,50 @@ zvol_set_snapdev_impl(char *name, uint64_t snapdev)
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spl_fstrans_unmark(cookie);
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}
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typedef struct zvol_volmode_cb_arg {
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uint64_t volmode;
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} zvol_volmode_cb_arg_t;
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static void
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zvol_set_volmode_impl(char *name, uint64_t volmode)
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{
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fstrans_cookie_t cookie = spl_fstrans_mark();
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if (strchr(name, '@') != NULL)
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return;
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/*
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* It's unfortunate we need to remove minors before we create new ones:
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* this is necessary because our backing gendisk (zvol_state->zv_disk)
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* coule be different when we set, for instance, volmode from "geom"
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* to "dev" (or vice versa).
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* A possible optimization is to modify our consumers so we don't get
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* called when "volmode" does not change.
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*/
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switch (volmode) {
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case ZFS_VOLMODE_NONE:
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(void) zvol_remove_minor_impl(name);
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break;
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case ZFS_VOLMODE_GEOM:
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case ZFS_VOLMODE_DEV:
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(void) zvol_remove_minor_impl(name);
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(void) zvol_create_minor_impl(name);
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break;
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case ZFS_VOLMODE_DEFAULT:
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(void) zvol_remove_minor_impl(name);
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if (zvol_volmode == ZFS_VOLMODE_NONE)
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break;
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else /* if zvol_volmode is invalid defaults to "geom" */
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(void) zvol_create_minor_impl(name);
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break;
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}
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spl_fstrans_unmark(cookie);
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}
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static zvol_task_t *
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zvol_task_alloc(zvol_async_op_t op, const char *name1, const char *name2,
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uint64_t snapdev)
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uint64_t value)
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{
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zvol_task_t *task;
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char *delim;
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@ -2240,7 +2306,7 @@ zvol_task_alloc(zvol_async_op_t op, const char *name1, const char *name2,
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task = kmem_zalloc(sizeof (zvol_task_t), KM_SLEEP);
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task->op = op;
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task->snapdev = snapdev;
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task->value = value;
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delim = strchr(name1, '/');
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strlcpy(task->pool, name1, delim ? (delim - name1 + 1) : MAXNAMELEN);
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@ -2276,7 +2342,10 @@ zvol_task_cb(void *param)
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zvol_rename_minors_impl(task->name1, task->name2);
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break;
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case ZVOL_ASYNC_SET_SNAPDEV:
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zvol_set_snapdev_impl(task->name1, task->snapdev);
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zvol_set_snapdev_impl(task->name1, task->value);
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break;
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case ZVOL_ASYNC_SET_VOLMODE:
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zvol_set_volmode_impl(task->name1, task->value);
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break;
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default:
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VERIFY(0);
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@ -2286,12 +2355,12 @@ zvol_task_cb(void *param)
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zvol_task_free(task);
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}
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typedef struct zvol_set_snapdev_arg {
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typedef struct zvol_set_prop_int_arg {
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const char *zsda_name;
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uint64_t zsda_value;
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zprop_source_t zsda_source;
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dmu_tx_t *zsda_tx;
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} zvol_set_snapdev_arg_t;
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} zvol_set_prop_int_arg_t;
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/*
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* Sanity check the dataset for safe use by the sync task. No additional
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@ -2300,7 +2369,7 @@ typedef struct zvol_set_snapdev_arg {
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static int
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zvol_set_snapdev_check(void *arg, dmu_tx_t *tx)
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{
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zvol_set_snapdev_arg_t *zsda = arg;
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zvol_set_prop_int_arg_t *zsda = arg;
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dsl_pool_t *dp = dmu_tx_pool(tx);
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dsl_dir_t *dd;
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int error;
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@ -2344,7 +2413,7 @@ zvol_set_snapdev_sync_cb(dsl_pool_t *dp, dsl_dataset_t *ds, void *arg)
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static void
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zvol_set_snapdev_sync(void *arg, dmu_tx_t *tx)
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{
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zvol_set_snapdev_arg_t *zsda = arg;
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zvol_set_prop_int_arg_t *zsda = arg;
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dsl_pool_t *dp = dmu_tx_pool(tx);
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dsl_dir_t *dd;
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dsl_dataset_t *ds;
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@ -2369,7 +2438,7 @@ zvol_set_snapdev_sync(void *arg, dmu_tx_t *tx)
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int
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zvol_set_snapdev(const char *ddname, zprop_source_t source, uint64_t snapdev)
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{
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zvol_set_snapdev_arg_t zsda;
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zvol_set_prop_int_arg_t zsda;
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zsda.zsda_name = ddname;
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zsda.zsda_source = source;
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@ -2379,6 +2448,93 @@ zvol_set_snapdev(const char *ddname, zprop_source_t source, uint64_t snapdev)
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zvol_set_snapdev_sync, &zsda, 0, ZFS_SPACE_CHECK_NONE));
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}
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/*
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* Sanity check the dataset for safe use by the sync task. No additional
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* conditions are imposed.
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*/
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static int
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zvol_set_volmode_check(void *arg, dmu_tx_t *tx)
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{
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zvol_set_prop_int_arg_t *zsda = arg;
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dsl_pool_t *dp = dmu_tx_pool(tx);
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dsl_dir_t *dd;
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int error;
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error = dsl_dir_hold(dp, zsda->zsda_name, FTAG, &dd, NULL);
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if (error != 0)
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return (error);
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dsl_dir_rele(dd, FTAG);
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return (error);
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}
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/* ARGSUSED */
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static int
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zvol_set_volmode_sync_cb(dsl_pool_t *dp, dsl_dataset_t *ds, void *arg)
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{
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char dsname[MAXNAMELEN];
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zvol_task_t *task;
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uint64_t volmode;
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dsl_dataset_name(ds, dsname);
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if (dsl_prop_get_int_ds(ds, "volmode", &volmode) != 0)
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return (0);
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task = zvol_task_alloc(ZVOL_ASYNC_SET_VOLMODE, dsname, NULL, volmode);
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if (task == NULL)
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return (0);
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(void) taskq_dispatch(dp->dp_spa->spa_zvol_taskq, zvol_task_cb,
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task, TQ_SLEEP);
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return (0);
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}
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/*
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* Traverse all child datasets and apply volmode appropriately.
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* We call dsl_prop_set_sync_impl() here to set the value only on the toplevel
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* dataset and read the effective "volmode" on every child in the callback
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* function: this is because the value is not guaranteed to be the same in the
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* whole dataset hierarchy.
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*/
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static void
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zvol_set_volmode_sync(void *arg, dmu_tx_t *tx)
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{
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zvol_set_prop_int_arg_t *zsda = arg;
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dsl_pool_t *dp = dmu_tx_pool(tx);
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dsl_dir_t *dd;
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dsl_dataset_t *ds;
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int error;
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VERIFY0(dsl_dir_hold(dp, zsda->zsda_name, FTAG, &dd, NULL));
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zsda->zsda_tx = tx;
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error = dsl_dataset_hold(dp, zsda->zsda_name, FTAG, &ds);
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if (error == 0) {
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dsl_prop_set_sync_impl(ds, zfs_prop_to_name(ZFS_PROP_VOLMODE),
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zsda->zsda_source, sizeof (zsda->zsda_value), 1,
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&zsda->zsda_value, zsda->zsda_tx);
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dsl_dataset_rele(ds, FTAG);
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}
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dmu_objset_find_dp(dp, dd->dd_object, zvol_set_volmode_sync_cb,
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zsda, DS_FIND_CHILDREN);
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dsl_dir_rele(dd, FTAG);
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}
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int
|
||||
zvol_set_volmode(const char *ddname, zprop_source_t source, uint64_t volmode)
|
||||
{
|
||||
zvol_set_prop_int_arg_t zsda;
|
||||
|
||||
zsda.zsda_name = ddname;
|
||||
zsda.zsda_source = source;
|
||||
zsda.zsda_value = volmode;
|
||||
|
||||
return (dsl_sync_task(ddname, zvol_set_volmode_check,
|
||||
zvol_set_volmode_sync, &zsda, 0, ZFS_SPACE_CHECK_NONE));
|
||||
}
|
||||
|
||||
void
|
||||
zvol_create_minors(spa_t *spa, const char *name, boolean_t async)
|
||||
{
|
||||
@ -2510,4 +2666,7 @@ MODULE_PARM_DESC(zvol_max_discard_blocks, "Max number of blocks to discard");
|
||||
|
||||
module_param(zvol_prefetch_bytes, uint, 0644);
|
||||
MODULE_PARM_DESC(zvol_prefetch_bytes, "Prefetch N bytes at zvol start+end");
|
||||
|
||||
module_param(zvol_volmode, uint, 0644);
|
||||
MODULE_PARM_DESC(zvol_volmode, "Default volmode property value");
|
||||
/* END CSTYLED */
|
||||
|
||||
@ -569,7 +569,7 @@ tests = ['zvol_cli_001_pos', 'zvol_cli_002_pos', 'zvol_cli_003_neg']
|
||||
[tests/functional/zvol/zvol_misc]
|
||||
tests = ['zvol_misc_001_neg', 'zvol_misc_002_pos', 'zvol_misc_003_neg',
|
||||
'zvol_misc_004_pos', 'zvol_misc_005_neg', 'zvol_misc_006_pos',
|
||||
'zvol_misc_snapdev']
|
||||
'zvol_misc_snapdev', 'zvol_misc_volmode']
|
||||
|
||||
[tests/functional/zvol/zvol_swap]
|
||||
tests = ['zvol_swap_001_pos', 'zvol_swap_002_pos', 'zvol_swap_003_pos',
|
||||
|
||||
@ -748,7 +748,7 @@ function zero_partitions #<whole_disk_name>
|
||||
else
|
||||
for i in 0 1 3 4 5 6 7
|
||||
do
|
||||
set_partition $i "" 0mb $diskname
|
||||
log_must set_partition $i "" 0mb $diskname
|
||||
done
|
||||
fi
|
||||
|
||||
@ -788,7 +788,11 @@ function set_partition #<slice_num> <slice_start> <size_plus_units> <whole_disk
|
||||
parted $DEV_DSKDIR/$disk -s -- print 1 >/dev/null
|
||||
typeset ret_val=$?
|
||||
if [[ $slicenum -eq 0 || $ret_val -ne 0 ]]; then
|
||||
log_must parted $DEV_DSKDIR/$disk -s -- mklabel gpt
|
||||
parted $DEV_DSKDIR/$disk -s -- mklabel gpt
|
||||
if [[ $? -ne 0 ]]; then
|
||||
log_note "Failed to create GPT partition table on $disk"
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
|
||||
# When no start is given align on the first cylinder.
|
||||
@ -804,8 +808,12 @@ function set_partition #<slice_num> <slice_start> <size_plus_units> <whole_disk
|
||||
awk -F '[:k.]' '{print $4}')
|
||||
((end = (size_mb * 1024 / cly_size_kb) + start))
|
||||
|
||||
log_must parted $DEV_DSKDIR/$disk -s -- \
|
||||
parted $DEV_DSKDIR/$disk -s -- \
|
||||
mkpart part$slicenum ${start}cyl ${end}cyl
|
||||
if [[ $? -ne 0 ]]; then
|
||||
log_note "Failed to create partition $slicenum on $disk"
|
||||
return 1
|
||||
fi
|
||||
|
||||
blockdev --rereadpt $DEV_DSKDIR/$disk 2>/dev/null
|
||||
block_device_wait
|
||||
@ -828,8 +836,10 @@ function set_partition #<slice_num> <slice_start> <size_plus_units> <whole_disk
|
||||
|
||||
typeset ret_val=$?
|
||||
rm -f $format_file
|
||||
[[ $ret_val -ne 0 ]] && \
|
||||
log_fail "Unable to format $disk slice $slicenum to $size"
|
||||
if [[ $ret_val -ne 0 ]]; then
|
||||
log_note "Unable to format $disk slice $slicenum to $size"
|
||||
return 1
|
||||
fi
|
||||
return 0
|
||||
}
|
||||
|
||||
@ -959,7 +969,7 @@ function partition_disk #<slice_size> <whole_disk_name> <total_slices>
|
||||
continue
|
||||
fi
|
||||
fi
|
||||
set_partition $i "$cyl" $slice_size $disk_name
|
||||
log_must set_partition $i "$cyl" $slice_size $disk_name
|
||||
cyl=$(get_endslice $disk_name $i)
|
||||
((i = i+1))
|
||||
done
|
||||
|
||||
@ -81,13 +81,13 @@ vfstab_dev=$(find_vfstab_dev)
|
||||
if is_linux; then
|
||||
partition_disk $SIZE $disk 7
|
||||
cyl=$(get_endslice $disk $SLICE5)
|
||||
set_partition $SLICE6 "$cyl" $SIZE1 $disk
|
||||
log_must set_partition $SLICE6 "$cyl" $SIZE1 $disk
|
||||
else
|
||||
specified_dump_dev=${disk}${SLICE_PREFIX}${SLICE0}
|
||||
saved_dump_dev=$(save_dump_dev)
|
||||
|
||||
cyl=$(get_endslice $disk $SLICE6)
|
||||
set_partition $SLICE7 "$cyl" $SIZE1 $disk
|
||||
log_must set_partition $SLICE7 "$cyl" $SIZE1 $disk
|
||||
fi
|
||||
create_pool "$TESTPOOL" "$pooldev1"
|
||||
|
||||
|
||||
@ -1,5 +1,6 @@
|
||||
pkgdatadir = $(datadir)/@PACKAGE@/zfs-tests/tests/functional/zvol/zvol_misc
|
||||
dist_pkgdata_SCRIPTS = \
|
||||
zvol_misc_common.kshlib \
|
||||
cleanup.ksh \
|
||||
setup.ksh \
|
||||
zvol_misc_001_neg.ksh \
|
||||
@ -8,4 +9,5 @@ dist_pkgdata_SCRIPTS = \
|
||||
zvol_misc_004_pos.ksh \
|
||||
zvol_misc_005_neg.ksh \
|
||||
zvol_misc_006_pos.ksh \
|
||||
zvol_misc_snapdev.ksh
|
||||
zvol_misc_snapdev.ksh \
|
||||
zvol_misc_volmode.ksh
|
||||
|
||||
141
tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_common.kshlib
Executable file
141
tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_common.kshlib
Executable file
@ -0,0 +1,141 @@
|
||||
#!/bin/ksh -p
|
||||
#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or http://www.opensolaris.org/os/licensing.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright 2017, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
|
||||
#
|
||||
|
||||
. $STF_SUITE/include/libtest.shlib
|
||||
. $STF_SUITE/tests/functional/cli_root/zfs_set/zfs_set_common.kshlib
|
||||
. $STF_SUITE/tests/functional/zvol/zvol_common.shlib
|
||||
|
||||
#
|
||||
# Wait for udev to settle, completely.
|
||||
# This is quite discomforting, but there's a race condition here
|
||||
# (Amazon 2015.09 x86_64 Release (TEST) is good at triggering this) where the
|
||||
# kernel tries to remove zvol device nodes while they're open by [blkid],
|
||||
# [zvol_id] or other udev related processes.
|
||||
# Calling 'udevadm settle' is not enough: wait for those processes "manually".
|
||||
#
|
||||
function udev_wait
|
||||
{
|
||||
sleep 1
|
||||
udevadm trigger --action=change
|
||||
udevadm settle
|
||||
for i in {1..3}; do
|
||||
blkid="$(pgrep blkid | wc -l)"
|
||||
zvol_id="$(pgrep zvol_id | wc -l)"
|
||||
[[ "0" == "$zvol_id" && "0" == "$blkid" ]] && return
|
||||
udevadm settle
|
||||
done
|
||||
log_fail "Wait timeout reached for udev_wait"
|
||||
}
|
||||
|
||||
#
|
||||
# Clean up udev status
|
||||
# This is also a problem on "Amazon 2015.09 x86_64 Release (TEST)" where udev,
|
||||
# sometimes, does not clean up /dev/zvol symlinks correctly for removed ZVOLs.
|
||||
# Prune those links manually, then tell udev to forget them.
|
||||
#
|
||||
function udev_cleanup
|
||||
{
|
||||
log_note "Pruning broken ZVOL symlinks ..."
|
||||
udevadm settle
|
||||
# find all dangling links and delete them
|
||||
find -L "${ZVOL_DEVDIR}" -type l -print -delete
|
||||
# purge those links from udev database
|
||||
udevadm info --cleanup-db
|
||||
}
|
||||
|
||||
#
|
||||
# Verify $device exists and is a block device
|
||||
#
|
||||
function blockdev_exists # device
|
||||
{
|
||||
typeset device="$1"
|
||||
|
||||
# we wait here instead of doing it in a wrapper around 'zfs set snapdev'
|
||||
# because there are other commands (zfs snap, zfs inherit, zfs destroy)
|
||||
# that can affect device nodes
|
||||
for i in {1..3}; do
|
||||
udev_wait
|
||||
[[ -b "$device" ]] && return 0
|
||||
done
|
||||
log_fail "$device does not exist as a block device"
|
||||
}
|
||||
|
||||
#
|
||||
# Verify $device does not exist
|
||||
#
|
||||
function blockdev_missing # device
|
||||
{
|
||||
typeset device="$1"
|
||||
|
||||
# we wait here instead of doing it in a wrapper around 'zfs set snapdev'
|
||||
# because there are other commands (zfs snap, zfs inherit, zfs destroy)
|
||||
# that can affect device nodes
|
||||
for i in {1..3}; do
|
||||
udev_wait
|
||||
[[ ! -e "$device" ]] && return 0
|
||||
done
|
||||
log_fail "$device exists when not expected"
|
||||
}
|
||||
|
||||
#
|
||||
# Verify $property on $dataset is inherited by $parent and is set to $value
|
||||
#
|
||||
function verify_inherited # property value dataset parent
|
||||
{
|
||||
typeset property="$1"
|
||||
typeset value="$2"
|
||||
typeset dataset="$3"
|
||||
typeset parent="$4"
|
||||
|
||||
typeset val=$(get_prop "$property" "$dataset")
|
||||
typeset src=$(get_source "$property" "$dataset")
|
||||
if [[ "$val" != "$value" || "$src" != "inherited from $parent" ]]; then
|
||||
log_fail "Dataset $dataset did not inherit $property properly:"\
|
||||
"expected=$value, value=$val, source=$src."
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Create a small partition on $device, then verify if we can access it
|
||||
#
|
||||
function verify_partition # device
|
||||
{
|
||||
typeset device="$1"
|
||||
|
||||
if [[ ! -b "$device" ]]; then
|
||||
log_fail "$device is not a block device"
|
||||
fi
|
||||
# create a small dummy partition
|
||||
set_partition 0 1 1m $device
|
||||
# verify we can access the partition on the device
|
||||
devname="$(readlink -f "$device")"
|
||||
if is_linux; then
|
||||
[[ -b "$devname""p1" ]]
|
||||
else
|
||||
[[ -b "$devname""s0" ]]
|
||||
fi
|
||||
return $?
|
||||
}
|
||||
@ -27,6 +27,7 @@
|
||||
. $STF_SUITE/include/libtest.shlib
|
||||
. $STF_SUITE/tests/functional/cli_root/zfs_set/zfs_set_common.kshlib
|
||||
. $STF_SUITE/tests/functional/zvol/zvol_common.shlib
|
||||
. $STF_SUITE/tests/functional/zvol/zvol_misc/zvol_misc_common.kshlib
|
||||
|
||||
#
|
||||
# DESCRIPTION:
|
||||
@ -46,60 +47,7 @@ function cleanup
|
||||
datasetexists $ZVOL && log_must zfs destroy -r $ZVOL
|
||||
log_must zfs inherit snapdev $TESTPOOL
|
||||
block_device_wait
|
||||
}
|
||||
|
||||
#
|
||||
# Verify $device exists and is a block device
|
||||
#
|
||||
function blockdev_exists # device
|
||||
{
|
||||
typeset device="$1"
|
||||
|
||||
# we wait here instead of doing it in a wrapper around 'zfs set snapdev'
|
||||
# because there are other commands (zfs snap, zfs inherit, zfs destroy)
|
||||
# that can affect device nodes
|
||||
block_device_wait
|
||||
|
||||
if [[ ! -b "$device" ]]; then
|
||||
log_fail "$device does not exist as a block device"
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Verify $device does not exist
|
||||
#
|
||||
function check_missing # device
|
||||
{
|
||||
typeset device="$1"
|
||||
|
||||
# we wait here instead of doing it in a wrapper around 'zfs set snapdev'
|
||||
# because there are other commands (zfs snap, zfs inherit, zfs destroy)
|
||||
# that can affect device nodes
|
||||
block_device_wait
|
||||
|
||||
if [[ -e "$device" ]]; then
|
||||
log_fail "$device exists when not expected"
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Verify $property on $dataset is inherited by $parent and is set to $value
|
||||
#
|
||||
function verify_inherited # property value dataset parent
|
||||
{
|
||||
typeset property="$1"
|
||||
typeset value="$2"
|
||||
typeset dataset="$3"
|
||||
typeset parent="$4"
|
||||
|
||||
typeset val=$(get_prop "$property" "$dataset")
|
||||
typeset src=$(get_source "$property" "$dataset")
|
||||
if [[ "$val" != "$value" || "$src" != "inherited from $parent" ]]
|
||||
then
|
||||
log_fail "Dataset $dataset did not inherit $property properly:"\
|
||||
"expected=$value, value=$val, source=$src."
|
||||
fi
|
||||
|
||||
udev_cleanup
|
||||
}
|
||||
|
||||
log_assert "Verify that ZFS volume property 'snapdev' works as expected."
|
||||
@ -130,14 +78,14 @@ log_must zfs snapshot $SNAP
|
||||
log_must zfs set snapdev=visible $ZVOL
|
||||
blockdev_exists $SNAPDEV
|
||||
log_must zfs set snapdev=hidden $ZVOL
|
||||
check_missing $SNAPDEV
|
||||
blockdev_missing $SNAPDEV
|
||||
log_must zfs destroy $SNAP
|
||||
# 2.2 First set snapdev property then create a snapshot
|
||||
log_must zfs set snapdev=visible $ZVOL
|
||||
log_must zfs snapshot $SNAP
|
||||
blockdev_exists $SNAPDEV
|
||||
log_must zfs destroy $SNAP
|
||||
check_missing $SNAPDEV
|
||||
blockdev_missing $SNAPDEV
|
||||
# 2.3 Verify setting to the same value multiple times does not lead to issues
|
||||
log_must zfs snapshot $SNAP
|
||||
log_must zfs set snapdev=visible $ZVOL
|
||||
@ -145,9 +93,9 @@ blockdev_exists $SNAPDEV
|
||||
log_must zfs set snapdev=visible $ZVOL
|
||||
blockdev_exists $SNAPDEV
|
||||
log_must zfs set snapdev=hidden $ZVOL
|
||||
check_missing $SNAPDEV
|
||||
blockdev_missing $SNAPDEV
|
||||
log_must zfs set snapdev=hidden $ZVOL
|
||||
check_missing $SNAPDEV
|
||||
blockdev_missing $SNAPDEV
|
||||
log_must zfs destroy $SNAP
|
||||
|
||||
# 3. Verify "snapdev" is inherited correctly
|
||||
@ -160,14 +108,14 @@ blockdev_exists $SNAPDEV
|
||||
# 3.2 Check snapdev=hidden case
|
||||
log_must zfs set snapdev=hidden $TESTPOOL
|
||||
verify_inherited 'snapdev' 'hidden' $ZVOL $TESTPOOL
|
||||
check_missing $SNAPDEV
|
||||
blockdev_missing $SNAPDEV
|
||||
# 3.3 Check inheritance on multiple levels
|
||||
log_must zfs snapshot $SUBSNAP
|
||||
log_must zfs inherit snapdev $SUBZVOL
|
||||
log_must zfs set snapdev=hidden $VOLFS
|
||||
log_must zfs set snapdev=visible $TESTPOOL
|
||||
verify_inherited 'snapdev' 'hidden' $SUBZVOL $VOLFS
|
||||
check_missing $SUBSNAPDEV
|
||||
blockdev_missing $SUBSNAPDEV
|
||||
blockdev_exists $SNAPDEV
|
||||
|
||||
log_pass "ZFS volume property 'snapdev' works as expected"
|
||||
|
||||
225
tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_volmode.ksh
Executable file
225
tests/zfs-tests/tests/functional/zvol/zvol_misc/zvol_misc_volmode.ksh
Executable file
@ -0,0 +1,225 @@
|
||||
#!/bin/ksh -p
|
||||
#
|
||||
# CDDL HEADER START
|
||||
#
|
||||
# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
||||
# You may not use this file except in compliance with the License.
|
||||
#
|
||||
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
||||
# or http://www.opensolaris.org/os/licensing.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
||||
#
|
||||
# When distributing Covered Code, include this CDDL HEADER in each
|
||||
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
||||
# If applicable, add the following below this CDDL HEADER, with the
|
||||
# fields enclosed by brackets "[]" replaced with your own identifying
|
||||
# information: Portions Copyright [yyyy] [name of copyright owner]
|
||||
#
|
||||
# CDDL HEADER END
|
||||
#
|
||||
|
||||
#
|
||||
# Copyright 2017, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
|
||||
#
|
||||
|
||||
. $STF_SUITE/include/libtest.shlib
|
||||
. $STF_SUITE/tests/functional/cli_root/zfs_set/zfs_set_common.kshlib
|
||||
. $STF_SUITE/tests/functional/zvol/zvol_common.shlib
|
||||
. $STF_SUITE/tests/functional/zvol/zvol_misc/zvol_misc_common.kshlib
|
||||
|
||||
#
|
||||
# DESCRIPTION:
|
||||
# Verify that ZFS volume property "volmode" works as intended.
|
||||
#
|
||||
# STRATEGY:
|
||||
# 1. Verify "volmode" property does not accept invalid values
|
||||
# 2. Verify "volmode=none" hides ZVOL device nodes
|
||||
# 3. Verify "volmode=full" exposes a fully functional device
|
||||
# 4. Verify "volmode=dev" hides partition info on the device
|
||||
# 5. Verify "volmode=default" behaves accordingly to "volmode" module parameter
|
||||
# 6. Verify "volmode" property is inherited correctly
|
||||
# 7. Verify "volmode" behaves accordingly to zvol_inhibit_dev (Linux only)
|
||||
#
|
||||
# NOTE: changing volmode may need to remove minors, which could be open, so call
|
||||
# udev_wait() before we "zfs set volmode=<value>".
|
||||
|
||||
verify_runnable "global"
|
||||
|
||||
function cleanup
|
||||
{
|
||||
datasetexists $VOLFS && log_must_busy zfs destroy -r $VOLFS
|
||||
datasetexists $ZVOL && log_must_busy zfs destroy -r $ZVOL
|
||||
log_must zfs inherit volmode $TESTPOOL
|
||||
udev_wait
|
||||
sysctl_inhibit_dev 0
|
||||
udev_cleanup
|
||||
}
|
||||
|
||||
#
|
||||
# Set zvol_inhibit_dev tunable to $value
|
||||
#
|
||||
function sysctl_inhibit_dev # value
|
||||
{
|
||||
typeset value="$1"
|
||||
|
||||
if is_linux; then
|
||||
log_note "Setting zvol_inhibit_dev tunable to $value"
|
||||
log_must eval "echo $value > "\
|
||||
"/sys/module/zfs/parameters/zvol_inhibit_dev"
|
||||
fi
|
||||
}
|
||||
|
||||
#
|
||||
# Set volmode tunable to $value
|
||||
#
|
||||
function sysctl_volmode # value
|
||||
{
|
||||
typeset value="$1"
|
||||
|
||||
log_note "Setting volmode tunable to $value"
|
||||
if is_linux; then
|
||||
echo "$value" > '/sys/module/zfs/parameters/zvol_volmode'
|
||||
else
|
||||
sysctl 'vfs.zfs.vol.mode' "$value"
|
||||
fi
|
||||
if [[ $? -ne 0 ]]; then
|
||||
log_fail "Unable to set volmode tunable to $value"
|
||||
fi
|
||||
}
|
||||
|
||||
log_assert "Verify that ZFS volume property 'volmode' works as intended"
|
||||
log_onexit cleanup
|
||||
|
||||
VOLFS="$TESTPOOL/volfs"
|
||||
ZVOL="$TESTPOOL/vol"
|
||||
ZDEV="${ZVOL_DEVDIR}/$ZVOL"
|
||||
SUBZVOL="$VOLFS/subvol"
|
||||
SUBZDEV="${ZVOL_DEVDIR}/$SUBZVOL"
|
||||
|
||||
log_must zfs create -o mountpoint=none $VOLFS
|
||||
log_must zfs create -V $VOLSIZE -s $SUBZVOL
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
udev_wait
|
||||
|
||||
# 1. Verify "volmode" property does not accept invalid values
|
||||
typeset badvals=("off" "on" "1" "nope" "-")
|
||||
for badval in ${badvals[@]}
|
||||
do
|
||||
log_mustnot zfs set volmode="$badval" $ZVOL
|
||||
done
|
||||
|
||||
# 2. Verify "volmode=none" hides ZVOL device nodes
|
||||
log_must zfs set volmode=none $ZVOL
|
||||
blockdev_missing $ZDEV
|
||||
log_must_busy zfs destroy $ZVOL
|
||||
|
||||
# 3. Verify "volmode=full" exposes a fully functional device
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
udev_wait
|
||||
log_must zfs set volmode=full $ZVOL
|
||||
blockdev_exists $ZDEV
|
||||
log_must verify_partition $ZDEV
|
||||
udev_wait
|
||||
# 3.1 Verify "volmode=geom" is an alias for "volmode=full"
|
||||
log_must zfs set volmode=geom $ZVOL
|
||||
blockdev_exists $ZDEV
|
||||
if [[ "$(get_prop 'volmode' $ZVOL)" != "full" ]]; then
|
||||
log_fail " Volmode value 'geom' is not an alias for 'full'"
|
||||
fi
|
||||
udev_wait
|
||||
log_must_busy zfs destroy $ZVOL
|
||||
|
||||
# 4. Verify "volmode=dev" hides partition info on the device
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
udev_wait
|
||||
log_must zfs set volmode=dev $ZVOL
|
||||
blockdev_exists $ZDEV
|
||||
log_mustnot verify_partition $ZDEV
|
||||
udev_wait
|
||||
log_must_busy zfs destroy $ZVOL
|
||||
|
||||
# 5. Verify "volmode=default" behaves accordingly to "volmode" module parameter
|
||||
# 5.1 Verify sysctl "volmode=full"
|
||||
sysctl_volmode 1
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
udev_wait
|
||||
log_must zfs set volmode=default $ZVOL
|
||||
blockdev_exists $ZDEV
|
||||
log_must verify_partition $ZDEV
|
||||
udev_wait
|
||||
log_must_busy zfs destroy $ZVOL
|
||||
# 5.2 Verify sysctl "volmode=dev"
|
||||
sysctl_volmode 2
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
udev_wait
|
||||
log_must zfs set volmode=default $ZVOL
|
||||
blockdev_exists $ZDEV
|
||||
log_mustnot verify_partition $ZDEV
|
||||
udev_wait
|
||||
log_must_busy zfs destroy $ZVOL
|
||||
# 5.2 Verify sysctl "volmode=none"
|
||||
sysctl_volmode 3
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
udev_wait
|
||||
log_must zfs set volmode=default $ZVOL
|
||||
blockdev_missing $ZDEV
|
||||
|
||||
# 6. Verify "volmode" property is inherited correctly
|
||||
log_must zfs inherit volmode $ZVOL
|
||||
# 6.1 Check volmode=full case
|
||||
log_must zfs set volmode=full $TESTPOOL
|
||||
verify_inherited 'volmode' 'full' $ZVOL $TESTPOOL
|
||||
blockdev_exists $ZDEV
|
||||
# 6.2 Check volmode=none case
|
||||
log_must zfs set volmode=none $TESTPOOL
|
||||
verify_inherited 'volmode' 'none' $ZVOL $TESTPOOL
|
||||
blockdev_missing $ZDEV
|
||||
# 6.3 Check volmode=dev case
|
||||
log_must zfs set volmode=dev $TESTPOOL
|
||||
verify_inherited 'volmode' 'dev' $ZVOL $TESTPOOL
|
||||
blockdev_exists $ZDEV
|
||||
# 6.4 Check volmode=default case
|
||||
sysctl_volmode 1
|
||||
log_must zfs set volmode=default $TESTPOOL
|
||||
verify_inherited 'volmode' 'default' $ZVOL $TESTPOOL
|
||||
blockdev_exists $ZDEV
|
||||
# 6.5 Check inheritance on multiple levels
|
||||
log_must zfs inherit volmode $SUBZVOL
|
||||
udev_wait
|
||||
log_must zfs set volmode=none $VOLFS
|
||||
udev_wait
|
||||
log_must zfs set volmode=full $TESTPOOL
|
||||
verify_inherited 'volmode' 'none' $SUBZVOL $VOLFS
|
||||
blockdev_missing $SUBZDEV
|
||||
blockdev_exists $ZDEV
|
||||
log_must_busy zfs destroy $ZVOL
|
||||
log_must_busy zfs destroy $SUBZVOL
|
||||
|
||||
# 7. Verify "volmode" behaves accordingly to zvol_inhibit_dev (Linux only)
|
||||
if is_linux; then
|
||||
sysctl_inhibit_dev 1
|
||||
# 7.1 Verify device nodes not are not created with "volmode=full"
|
||||
sysctl_volmode 1
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
blockdev_missing $ZDEV
|
||||
log_must zfs set volmode=full $ZVOL
|
||||
blockdev_missing $ZDEV
|
||||
log_must_busy zfs destroy $ZVOL
|
||||
# 7.1 Verify device nodes not are not created with "volmode=dev"
|
||||
sysctl_volmode 2
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
blockdev_missing $ZDEV
|
||||
log_must zfs set volmode=dev $ZVOL
|
||||
blockdev_missing $ZDEV
|
||||
log_must_busy zfs destroy $ZVOL
|
||||
# 7.1 Verify device nodes not are not created with "volmode=none"
|
||||
sysctl_volmode 3
|
||||
log_must zfs create -V $VOLSIZE -s $ZVOL
|
||||
blockdev_missing $ZDEV
|
||||
log_must zfs set volmode=none $ZVOL
|
||||
blockdev_missing $ZDEV
|
||||
fi
|
||||
|
||||
log_pass "Verify that ZFS volume property 'volmode' works as intended"
|
||||
Loading…
Reference in New Issue
Block a user