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Probe vdevs before marking removed

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Before allowing the ZED to mark a vdev as REMOVED due to a
hotplug event confirm that it is non-responsive with probe.
Any device which can be successfully probed should be left
ONLINE to prevent a healthy pool from being incorrectly
SUSPENDED.  This may occur for at least the following two
scenarios.

1) Drive expansion (zpool online -e) in VMware environments.
   If, during the partition resize operation, a partition is
   removed and re-created then udev will send a removed event.

2) Re-scanning the namespaces of an NVMe device (nvme ns-rescan)
   may result in a udev remove and add event being delivered.

Finally, update the ZED to only kick in a spare when the
removal was successful.

Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #14859
Closes #14861
This commit is contained in:
Brian Behlendorf
2023-05-19 13:05:09 -07:00
parent c2f0aaeb3c
commit e2176f12a9
2 changed files with 14 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
cmd/zed/agents/zfs_retire.c
+5 -3
View File
@@ -444,14 +444,16 @@ zfs_retire_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl,
return;
/* Remove the vdev since device is unplugged */
int remove_status = 0;
if (l2arc || (strcmp(class, "resource.fs.zfs.removed") == 0)) {
int status = zpool_vdev_remove_wanted(zhp, devname);
remove_status = zpool_vdev_remove_wanted(zhp, devname);
fmd_hdl_debug(hdl, "zpool_vdev_remove_wanted '%s'"
", ret:%d", devname, status);
", err:%d", devname, libzfs_errno(zhdl));
}
/* Replace the vdev with a spare if its not a l2arc */
if (!l2arc && (!fmd_prop_get_int32(hdl, "spare_on_remove") ||
if (!l2arc && !remove_status &&
(!fmd_prop_get_int32(hdl, "spare_on_remove") ||
replace_with_spare(hdl, zhp, vdev) == B_FALSE)) {
/* Could not handle with spare */
fmd_hdl_debug(hdl, "no spare for '%s'", devname);