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Fix ZED auto-replace for VDEVs using by-id paths
The change is simple -- restore the original code so that the VDEV
path is updated when using by-id paths. The more challenging part
was to devise a second ZTS test, that would test auto-replace for
'by-id' and help prevent a future regression.
With that new test, we can now do an A|B test with , and without,
the fix to confirm that auto-replace for by-id paths works. The
existing auto-replace test, functional/fault/auto_replace_001_pos,
will confirm that we didn't break auto-replace for 'by-vdev' paths.
In the original functional/fault/auto_replace_001_pos test, the disk
wipe (using dd) was not effective in removing the partitioning since
the kernel was never informed of the wipe.
Added a call to wipefs(8) so that the kernel is informed and ZED will
re-partition the device.
Added a validation step that the re-partitioning occurred by
confirming that the GPT partition UUID changes.
Sponsored-By: OpenDrives Inc.
Sponsored-By: Klara Inc.
Reviewed-by: Rob Norris <rob.norris@klarasystems.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Closes #15363
This commit is contained in:
Don Brady
Tony Hutter
parent
78fd79eacd
commit
0bcd1151f0
@ -24,6 +24,7 @@
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* Copyright 2014 Nexenta Systems, Inc. All rights reserved.
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* Copyright (c) 2016, 2017, Intel Corporation.
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* Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
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* Copyright (c) 2023, Klara Inc.
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*/
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/*
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@ -204,7 +205,7 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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uint64_t is_spare = 0;
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const char *physpath = NULL, *new_devid = NULL, *enc_sysfs_path = NULL;
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char rawpath[PATH_MAX], fullpath[PATH_MAX];
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char devpath[PATH_MAX];
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char pathbuf[PATH_MAX];
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int ret;
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int online_flag = ZFS_ONLINE_CHECKREMOVE | ZFS_ONLINE_UNSPARE;
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boolean_t is_sd = B_FALSE;
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@ -214,6 +215,11 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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char **lines = NULL;
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int lines_cnt = 0;
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/*
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* Get the persistent path, typically under the '/dev/disk/by-id' or
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* '/dev/disk/by-vdev' directories. Note that this path can change
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* when a vdev is replaced with a new disk.
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*/
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if (nvlist_lookup_string(vdev, ZPOOL_CONFIG_PATH, &path) != 0)
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return;
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@ -370,15 +376,17 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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(void) snprintf(rawpath, sizeof (rawpath), "%s%s",
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is_sd ? DEV_BYVDEV_PATH : DEV_BYPATH_PATH, physpath);
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if (realpath(rawpath, devpath) == NULL && !is_mpath_wholedisk) {
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if (realpath(rawpath, pathbuf) == NULL && !is_mpath_wholedisk) {
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zed_log_msg(LOG_INFO, " realpath: %s failed (%s)",
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rawpath, strerror(errno));
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(void) zpool_vdev_online(zhp, fullpath, ZFS_ONLINE_FORCEFAULT,
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&newstate);
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int err = zpool_vdev_online(zhp, fullpath,
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ZFS_ONLINE_FORCEFAULT, &newstate);
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zed_log_msg(LOG_INFO, " zpool_vdev_online: %s FORCEFAULT (%s)",
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fullpath, libzfs_error_description(g_zfshdl));
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zed_log_msg(LOG_INFO, " zpool_vdev_online: %s FORCEFAULT (%s) "
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"err %d, new state %d",
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fullpath, libzfs_error_description(g_zfshdl), err,
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err ? (int)newstate : 0);
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return;
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}
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@ -428,7 +436,7 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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* to trigger a ZFS fault for the device (and any hot spare
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* replacement).
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*/
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leafname = strrchr(devpath, '/') + 1;
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leafname = strrchr(pathbuf, '/') + 1;
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/*
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* If this is a request to label a whole disk, then attempt to
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@ -436,7 +444,7 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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*/
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if (zpool_prepare_and_label_disk(g_zfshdl, zhp, leafname,
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vdev, "autoreplace", &lines, &lines_cnt) != 0) {
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zed_log_msg(LOG_INFO,
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zed_log_msg(LOG_WARNING,
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" zpool_prepare_and_label_disk: could not "
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"label '%s' (%s)", leafname,
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libzfs_error_description(g_zfshdl));
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@ -468,7 +476,7 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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sizeof (device->pd_physpath));
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list_insert_tail(&g_device_list, device);
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zed_log_msg(LOG_INFO, " zpool_label_disk: async '%s' (%llu)",
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zed_log_msg(LOG_NOTICE, " zpool_label_disk: async '%s' (%llu)",
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leafname, (u_longlong_t)guid);
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return; /* resumes at EC_DEV_ADD.ESC_DISK for partition */
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@ -491,8 +499,8 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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}
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if (!found) {
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/* unexpected partition slice encountered */
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zed_log_msg(LOG_INFO, "labeled disk %s unexpected here",
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fullpath);
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zed_log_msg(LOG_WARNING, "labeled disk %s was "
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"unexpected here", fullpath);
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(void) zpool_vdev_online(zhp, fullpath,
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ZFS_ONLINE_FORCEFAULT, &newstate);
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return;
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@ -501,8 +509,17 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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zed_log_msg(LOG_INFO, " zpool_label_disk: resume '%s' (%llu)",
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physpath, (u_longlong_t)guid);
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(void) snprintf(devpath, sizeof (devpath), "%s%s",
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DEV_BYID_PATH, new_devid);
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/*
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* Paths that begin with '/dev/disk/by-id/' will change and so
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* they must be updated before calling zpool_vdev_attach().
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*/
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if (strncmp(path, DEV_BYID_PATH, strlen(DEV_BYID_PATH)) == 0) {
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(void) snprintf(pathbuf, sizeof (pathbuf), "%s%s",
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DEV_BYID_PATH, new_devid);
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zed_log_msg(LOG_INFO, " zpool_label_disk: path '%s' "
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"replaced by '%s'", path, pathbuf);
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path = pathbuf;
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}
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}
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libzfs_free_str_array(lines, lines_cnt);
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@ -545,9 +562,11 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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* Wait for udev to verify the links exist, then auto-replace
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* the leaf disk at same physical location.
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*/
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if (zpool_label_disk_wait(path, 3000) != 0) {
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zed_log_msg(LOG_WARNING, "zfs_mod: expected replacement "
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"disk %s is missing", path);
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if (zpool_label_disk_wait(path, DISK_LABEL_WAIT) != 0) {
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zed_log_msg(LOG_WARNING, "zfs_mod: pool '%s', after labeling "
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"replacement disk, the expected disk partition link '%s' "
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"is missing after waiting %u ms",
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zpool_get_name(zhp), path, DISK_LABEL_WAIT);
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nvlist_free(nvroot);
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return;
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}
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@ -562,7 +581,7 @@ zfs_process_add(zpool_handle_t *zhp, nvlist_t *vdev, boolean_t labeled)
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B_TRUE, B_FALSE);
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}
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zed_log_msg(LOG_INFO, " zpool_vdev_replace: %s with %s (%s)",
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zed_log_msg(LOG_WARNING, " zpool_vdev_replace: %s with %s (%s)",
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fullpath, path, (ret == 0) ? "no errors" :
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libzfs_error_description(g_zfshdl));
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@ -660,7 +679,7 @@ zfs_iter_vdev(zpool_handle_t *zhp, nvlist_t *nvl, void *data)
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dp->dd_prop, path);
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dp->dd_found = B_TRUE;
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/* pass the new devid for use by replacing code */
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/* pass the new devid for use by auto-replacing code */
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if (dp->dd_new_devid != NULL) {
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(void) nvlist_add_string(nvl, "new_devid",
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dp->dd_new_devid);
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@ -34,7 +34,7 @@ extern "C" {
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#endif
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/*
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* Default wait time for a device name to be created.
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* Default wait time in milliseconds for a device name to be created.
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*/
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#define DISK_LABEL_WAIT (30 * 1000) /* 30 seconds */
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@ -582,9 +582,8 @@ zfs_device_get_physical(struct udev_device *dev, char *bufptr, size_t buflen)
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* Wait up to timeout_ms for udev to set up the device node. The device is
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* considered ready when libudev determines it has been initialized, all of
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* the device links have been verified to exist, and it has been allowed to
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* settle. At this point the device the device can be accessed reliably.
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* Depending on the complexity of the udev rules this process could take
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* several seconds.
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* settle. At this point the device can be accessed reliably. Depending on
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* the complexity of the udev rules this process could take several seconds.
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*/
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int
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zpool_label_disk_wait(const char *path, int timeout_ms)
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@ -122,10 +122,10 @@ tags = ['functional', 'fallocate']
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[tests/functional/fault:Linux]
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tests = ['auto_offline_001_pos', 'auto_online_001_pos', 'auto_online_002_pos',
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'auto_replace_001_pos', 'auto_spare_001_pos', 'auto_spare_002_pos',
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'auto_spare_multiple', 'auto_spare_ashift', 'auto_spare_shared',
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'decrypt_fault', 'decompress_fault', 'scrub_after_resilver',
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'zpool_status_-s']
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'auto_replace_001_pos', 'auto_replace_002_pos', 'auto_spare_001_pos',
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'auto_spare_002_pos', 'auto_spare_multiple', 'auto_spare_ashift',
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'auto_spare_shared', 'decrypt_fault', 'decompress_fault',
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'scrub_after_resilver', 'zpool_status_-s']
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tags = ['functional', 'fault']
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[tests/functional/features/large_dnode:Linux]
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@ -328,6 +328,7 @@ if os.environ.get('CI') == 'true':
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'fault/auto_online_001_pos': ['SKIP', ci_reason],
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'fault/auto_online_002_pos': ['SKIP', ci_reason],
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'fault/auto_replace_001_pos': ['SKIP', ci_reason],
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'fault/auto_replace_002_pos': ['SKIP', ci_reason],
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'fault/auto_spare_ashift': ['SKIP', ci_reason],
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'fault/auto_spare_shared': ['SKIP', ci_reason],
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'procfs/pool_state': ['SKIP', ci_reason],
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@ -130,12 +130,14 @@ export SYSTEM_FILES_LINUX='attr
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chattr
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exportfs
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fallocate
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flock
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free
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getfattr
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groupadd
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groupdel
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groupmod
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hostid
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logger
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losetup
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lsattr
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lsblk
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@ -145,21 +147,20 @@ export SYSTEM_FILES_LINUX='attr
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md5sum
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mkswap
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modprobe
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mountpoint
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mpstat
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nsenter
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parted
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perf
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setfattr
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setpriv
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sha256sum
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udevadm
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unshare
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useradd
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userdel
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usermod
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setpriv
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mountpoint
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flock
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logger'
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wipefs'
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export ZFS_FILES='zdb
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zfs
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@ -1431,6 +1431,7 @@ nobase_dist_datadir_zfs_tests_tests_SCRIPTS += \
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functional/fault/auto_online_001_pos.ksh \
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functional/fault/auto_online_002_pos.ksh \
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functional/fault/auto_replace_001_pos.ksh \
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functional/fault/auto_replace_002_pos.ksh \
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functional/fault/auto_spare_001_pos.ksh \
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functional/fault/auto_spare_002_pos.ksh \
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functional/fault/auto_spare_ashift.ksh \
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@ -34,13 +34,14 @@
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# 1. Update /etc/zfs/vdev_id.conf with scsidebug alias for a persistent path.
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# This creates keys ID_VDEV and ID_VDEV_PATH and set phys_path="scsidebug".
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# 2. Create a pool and set autoreplace=on (auto-replace is opt-in)
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# 3. Export a pool
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# 3. Export the pool
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# 4. Wipe and offline the scsi_debug disk
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# 5. Import pool with missing disk
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# 5. Import the pool with missing disk
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# 6. Re-online the wiped scsi_debug disk
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# 7. Verify the ZED detects the new unused disk and adds it back to the pool
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# 7. Verify ZED detects the new blank disk and replaces the missing vdev
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# 8. Verify that the scsi_debug disk was re-partitioned
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#
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# Creates a raidz1 zpool using persistent disk path names
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# Creates a raidz1 zpool using persistent /dev/disk/by-vdev path names
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# (ie not /dev/sdc)
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#
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# Auto-replace is opt in, and matches by phys_path.
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@ -83,11 +84,27 @@ log_must zpool create -f $TESTPOOL raidz1 $SD_DEVICE $DISK1 $DISK2 $DISK3
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log_must zpool set autoreplace=on $TESTPOOL
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# Add some data to the pool
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log_must mkfile $FSIZE /$TESTPOOL/data
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log_must zfs create $TESTPOOL/fs
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log_must fill_fs /$TESTPOOL/fs 4 100 4096 512 Z
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log_must zpool export $TESTPOOL
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# Record the partition UUID for later comparison
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part_uuid=$(udevadm info --query=property --property=ID_PART_TABLE_UUID \
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--value /dev/disk/by-id/$SD_DEVICE_ID)
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[[ -z "$part_uuid" ]] || log_note original disk GPT uuid ${part_uuid}
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#
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# Wipe and offline the disk
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#
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# Note that it is not enough to zero the disk to expunge the partitions.
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# You also need to inform the kernel (e.g., 'hdparm -z' or 'partprobe').
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#
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# Using partprobe is overkill and hdparm is not as common as wipefs. So
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# we use wipefs which lets the kernel know the partition was removed
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# from the device (i.e., calls BLKRRPART ioctl).
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#
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log_must dd if=/dev/zero of=/dev/disk/by-id/$SD_DEVICE_ID bs=1M count=$SDSIZE
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log_must /usr/sbin/wipefs -a /dev/disk/by-id/$SD_DEVICE_ID
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remove_disk $SD
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block_device_wait
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@ -106,4 +123,18 @@ log_must wait_replacing $TESTPOOL 60
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# Validate auto-replace was successful
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log_must check_state $TESTPOOL "" "ONLINE"
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#
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# Confirm the partition UUID changed so we know the new disk was relabeled
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#
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# Note: some older versions of udevadm don't support "--property" option so
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# we'll # skip this test when it is not supported
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#
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if [ ! -z "$part_uuid" ]; then
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new_uuid=$(udevadm info --query=property --property=ID_PART_TABLE_UUID \
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--value /dev/disk/by-id/$SD_DEVICE_ID)
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log_note new disk GPT uuid ${new_uuid}
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[[ "$part_uuid" = "$new_uuid" ]] && \
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log_fail "The new disk was not relabeled as expected"
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fi
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log_pass "Auto-replace test successful"
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192
tests/zfs-tests/tests/functional/fault/auto_replace_002_pos.ksh
Executable file
192
tests/zfs-tests/tests/functional/fault/auto_replace_002_pos.ksh
Executable file
@ -0,0 +1,192 @@
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#!/bin/ksh -p
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
|
||||
# Common Development and Distribution License (the "License").
|
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# You may not use this file except in compliance with the License.
|
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#
|
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
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# or https://opensource.org/licenses/CDDL-1.0.
|
||||
# See the License for the specific language governing permissions
|
||||
# and limitations under the License.
|
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#
|
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# 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]
|
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#
|
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# CDDL HEADER END
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#
|
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#
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# Copyright (c) 2017 by Intel Corporation. All rights reserved.
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# Copyright (c) 2023 by Klara, Inc. All rights reserved.
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#
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. $STF_SUITE/include/libtest.shlib
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. $STF_SUITE/tests/functional/fault/fault.cfg
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#
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# DESCRIPTION:
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# Testing Fault Management Agent ZED Logic - Automated Auto-Replace Test.
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# Verifys that auto-replace works with by-id paths.
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#
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# STRATEGY:
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# 1. Update /etc/zfs/vdev_id.conf with scsidebug alias for a persistent path.
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# This creates keys ID_VDEV and ID_VDEV_PATH and set phys_path="scsidebug".
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# 2. Create a pool and set autoreplace=on (auto-replace is opt-in)
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# 3. Export the pool
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# 4. Wipe and offline the scsi_debug disk
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# 5. Import the pool with missing disk
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# 6. Re-online the wiped scsi_debug disk with a new serial number
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# 7. Verify ZED detects the new blank disk and replaces the missing vdev
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# 8. Verify that the scsi_debug disk was re-partitioned
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#
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# Creates a raidz1 zpool using persistent /dev/disk/by-id path names
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#
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# Auto-replace is opt in, and matches by phys_path.
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#
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verify_runnable "both"
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if ! is_physical_device $DISKS; then
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log_unsupported "Unsupported disks for this test."
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fi
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function cleanup
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{
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zpool status $TESTPOOL
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destroy_pool $TESTPOOL
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sed -i '/alias scsidebug/d' $VDEVID_CONF
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unload_scsi_debug
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}
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#
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# Wait until a vdev transitions to its replacement vdev
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#
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# Return 0 when vdev reaches expected state, 1 on timeout.
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#
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# Note: index +2 is to skip over root and raidz-0 vdevs
|
||||
#
|
||||
function wait_vdev_online # pool index oldguid timeout
|
||||
{
|
||||
typeset pool=$1
|
||||
typeset -i index=$2+2
|
||||
typeset guid=$3
|
||||
typeset timeout=${4:-60}
|
||||
typeset -i i=0
|
||||
|
||||
while [[ $i -lt $timeout ]]; do
|
||||
vdev_guids=( $(zpool get -H -o value guid $pool all-vdevs) )
|
||||
|
||||
if [ "${vdev_guids[$index]}" != "${guid}" ]; then
|
||||
log_note "new vdev[$((index-2))]: ${vdev_guids[$index]}, replacing ${guid}"
|
||||
return 0
|
||||
fi
|
||||
|
||||
i=$((i+1))
|
||||
sleep 1
|
||||
done
|
||||
|
||||
return 1
|
||||
}
|
||||
log_assert "automated auto-replace with by-id paths"
|
||||
log_onexit cleanup
|
||||
|
||||
load_scsi_debug $SDSIZE $SDHOSTS $SDTGTS $SDLUNS '512b'
|
||||
SD=$(get_debug_device)
|
||||
SD_DEVICE_ID=$(get_persistent_disk_name $SD)
|
||||
SD_HOST=$(get_scsi_host $SD)
|
||||
|
||||
# Register vdev_id alias for scsi_debug device to create a persistent path
|
||||
echo "alias scsidebug /dev/disk/by-id/$SD_DEVICE_ID" >>$VDEVID_CONF
|
||||
block_device_wait
|
||||
|
||||
SD_DEVICE=$(udevadm info -q all -n $DEV_DSKDIR/$SD | \
|
||||
awk -F'=' '/ID_VDEV=/ {print $2; exit}')
|
||||
[ -z $SD_DEVICE ] && log_fail "vdev rule was not registered properly"
|
||||
|
||||
log_must zpool events -c
|
||||
log_must zpool create -f $TESTPOOL raidz1 $SD_DEVICE_ID $DISK1 $DISK2 $DISK3
|
||||
|
||||
vdev_guid=$(zpool get guid -H -o value $TESTPOOL $SD_DEVICE_ID)
|
||||
log_note original vdev guid ${vdev_guid}
|
||||
|
||||
# Auto-replace is opt-in so need to set property
|
||||
log_must zpool set autoreplace=on $TESTPOOL
|
||||
|
||||
# Add some data to the pool
|
||||
log_must zfs create $TESTPOOL/fs
|
||||
log_must fill_fs /$TESTPOOL/fs 4 100 4096 512 Z
|
||||
log_must zpool export $TESTPOOL
|
||||
|
||||
# Record the partition UUID for later comparison
|
||||
part_uuid=$(udevadm info --query=property --property=ID_PART_TABLE_UUID \
|
||||
--value /dev/disk/by-id/$SD_DEVICE_ID)
|
||||
[[ -z "$part_uuid" ]] || log_note original disk GPT uuid ${part_uuid}
|
||||
|
||||
#
|
||||
# Wipe and offline the disk
|
||||
#
|
||||
# Note that it is not enough to zero the disk to expunge the partitions.
|
||||
# You also need to inform the kernel (e.g., 'hdparm -z' or 'partprobe').
|
||||
#
|
||||
# Using partprobe is overkill and hdparm is not as common as wipefs. So
|
||||
# we use wipefs which lets the kernel know the partition was removed
|
||||
# from the device (i.e., calls BLKRRPART ioctl).
|
||||
#
|
||||
log_must dd if=/dev/zero of=/dev/disk/by-id/$SD_DEVICE_ID bs=1M count=$SDSIZE
|
||||
log_must /usr/sbin/wipefs -a /dev/disk/by-id/$SD_DEVICE_ID
|
||||
remove_disk $SD
|
||||
block_device_wait
|
||||
|
||||
# Re-import pool with drive missing
|
||||
log_must zpool import $TESTPOOL
|
||||
log_must check_state $TESTPOOL "" "DEGRADED"
|
||||
block_device_wait
|
||||
|
||||
#
|
||||
# Online an empty disk in the same physical location, with a different by-id
|
||||
# symlink. We use vpd_use_hostno to make sure the underlying serial number
|
||||
# changes for the new disk which in turn gives us a different by-id path.
|
||||
#
|
||||
# The original names were something like:
|
||||
# /dev/disk/by-id/scsi-SLinux_scsi_debug_16000-part1
|
||||
# /dev/disk/by-id/wwn-0x33333330000007d0-part1
|
||||
#
|
||||
# This new inserted disk, will have different links like:
|
||||
# /dev/disk/by-id/scsi-SLinux_scsi_debug_2000-part1
|
||||
# /dev/disk/by-id/wwn-0x0x3333333000003e80 -part1
|
||||
#
|
||||
echo '0' > /sys/bus/pseudo/drivers/scsi_debug/vpd_use_hostno
|
||||
|
||||
insert_disk $SD $SD_HOST
|
||||
|
||||
# make sure the physical path points to the same scsi-debug device
|
||||
SD_DEVICE_ID=$(get_persistent_disk_name $SD)
|
||||
echo "alias scsidebug /dev/disk/by-id/$SD_DEVICE_ID" >>$VDEVID_CONF
|
||||
block_device_wait
|
||||
|
||||
# Wait for the new disk to be online and replaced
|
||||
log_must wait_vdev_online $TESTPOOL 0 $vdev_guid 45
|
||||
log_must wait_replacing $TESTPOOL 45
|
||||
|
||||
# Validate auto-replace was successful
|
||||
log_must check_state $TESTPOOL "" "ONLINE"
|
||||
|
||||
#
|
||||
# Confirm the partition UUID changed so we know the new disk was relabeled
|
||||
#
|
||||
# Note: some older versions of udevadm don't support "--property" option so
|
||||
# we'll # skip this test when it is not supported
|
||||
#
|
||||
if [ ! -z "$part_uuid" ]; then
|
||||
new_uuid=$(udevadm info --query=property --property=ID_PART_TABLE_UUID \
|
||||
--value /dev/disk/by-id/$SD_DEVICE_ID)
|
||||
log_note new disk GPT uuid ${new_uuid}
|
||||
[[ "$part_uuid" = "$new_uuid" ]] && \
|
||||
log_fail "The new disk was not relabeled as expected"
|
||||
fi
|
||||
|
||||
log_pass "automated auto-replace with by-id paths"
|
||||
Loading…
Reference in New Issue
Block a user