c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 10:37:35 +03:00
Code Issues Packages Projects Releases Wiki Activity

Implemented zpool sync command

Browse Source 
This addition will enable us to sync an open TXG to the main pool
on demand. The functionality is similar to 'sync(2)' but 'zpool sync'
will return when data has hit the main storage instead of potentially
just the ZIL as is the case with the 'sync(2)' cmd.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Alek Pinchuk <apinchuk@datto.com>
Closes #6122
This commit is contained in:
Alek P
2017-05-19 12:33:11 -07:00
committed by Brian Behlendorf
parent 4a283c7f77
commit bec1067d54
20 changed files with 396 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/zfs_ioctl.c
+44
View File
@@ -34,6 +34,7 @@
* Copyright 2016 Toomas Soome <tsoome@me.com>
* Copyright (c) 2016 Actifio, Inc. All rights reserved.
* Copyright (c) 2017, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
* Copyright (c) 2017 Datto Inc.
*/
/*
@@ -5466,6 +5467,7 @@ zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
static int
zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl)
{
ASSERT3P(args, ==, NULL);
return (dsl_dataset_get_holds(snapname, outnvl));
}
@@ -5823,6 +5825,44 @@ out:
return (error);
}
/*
* Sync the currently open TXG to disk for the specified pool.
* This is somewhat similar to 'zfs_sync()'.
* For cases that do not result in error this ioctl will wait for
* the currently open TXG to commit before returning back to the caller.
*
* innvl: {
* "force" -> when true, force uberblock update even if there is no dirty data.
* In addition this will cause the vdev configuration to be written
* out including updating the zpool cache file. (boolean_t)
* }
*
* onvl is unused
*/
/* ARGSUSED */
static int
zfs_ioc_pool_sync(const char *pool, nvlist_t *innvl, nvlist_t *onvl)
{
int err;
boolean_t force;
spa_t *spa;
if ((err = spa_open(pool, &spa, FTAG)) != 0)
return (err);
force = fnvlist_lookup_boolean_value(innvl, "force");
if (force) {
spa_config_enter(spa, SCL_CONFIG, FTAG, RW_WRITER);
vdev_config_dirty(spa->spa_root_vdev);
spa_config_exit(spa, SCL_CONFIG, FTAG);
}
txg_wait_synced(spa_get_dsl(spa), 0);
spa_close(spa, FTAG);
return (err);
}
static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST];
static void
@@ -5995,6 +6035,10 @@ zfs_ioctl_init(void)
zfs_ioc_recv_new, zfs_secpolicy_recv_new, DATASET_NAME,
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
zfs_ioctl_register("sync", ZFS_IOC_POOL_SYNC,
zfs_ioc_pool_sync, zfs_secpolicy_none, POOL_NAME,
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE);
/* IOCTLS that use the legacy function signature */
zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,