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zpool: Change zpool offline spares policy

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The zpool offline man page says that you cannot use 'zpool offline'
on spares.  However, testing found that you could in fact force fault
(zpool offline -f) spares.

Change the policy to:
1. You can never force-fault or offline dRAID spares.
2. You can only force-fault or offline traditional spares if they're
   active.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Reviewed-by: Akash B <akash-b@hpe.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #18282
This commit is contained in:
Tony Hutter
2026-03-25 11:08:55 -07:00
committed by GitHub
parent 931deb290c
commit b44a3ecf4a
7 changed files with 137 additions and 8 deletions
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man/man8/zpool-offline.8
+4 -3
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@@ -56,11 +56,12 @@
.Ar pool
.Ar device Ns …
.Xc
Takes the specified physical device offline.
Takes the specified physical device offline or force-fault it.
While the
.Ar device
is offline, no attempt is made to read or write to the device.
This command is not applicable to spares.
is offline or force-faulted, no attempt is made to read or write to the device.
dRAID spares can not be offlined or force faulted.
Traditional spares can only be offlined or force-faulted when they are active.
.Bl -tag -width Ds
.It Fl -power
Power off the device's slot in the storage enclosure.