Rabinovitch
Dabbler
- Joined
- Apr 3, 2021
- Messages
- 43
I apologize in advance if the presentation of the problem turns out to be confusing.
A terrible thing happened today. TrueNAS used the HDDs of one zpool in creating another...
As a result, the zpool that previously owned the three disks involved in the new zpool was damaged because it consisted of 2 raidz2 vdevs.
My mistake - I should have first figured out which three "extra disks" TrueNAS sees in the "disks" under "Storage/Pools/Create Pool",
which physically should not be there. Usually only disks not involved in arrays are displayed here. I trusted TrueNAS, I could not admit that it could dispose of the disks in this way, and three "extra" disks are some kind of glitch.
So my stupid question with an almost guaranteed known answer is: can I restore the raidz2 vdev (and thus the entire pool) in case of 3 drives failure/absence? May be there is any magic to "unformat" that 3 drives detached from the affected zpool in the process of creating a new zpool? Anything else?
But the next degree of mystery is this: now I should see only 6 HDDs available for zpool creation, but actually I see 15. What is going on?
p.s. TrueNAS-12.0-U6.1
p.p.s. filed an issue: https://jira.ixsystems.com/browse/NAS-113811
A terrible thing happened today. TrueNAS used the HDDs of one zpool in creating another...
As a result, the zpool that previously owned the three disks involved in the new zpool was damaged because it consisted of 2 raidz2 vdevs.
My mistake - I should have first figured out which three "extra disks" TrueNAS sees in the "disks" under "Storage/Pools/Create Pool",
which physically should not be there. Usually only disks not involved in arrays are displayed here. I trusted TrueNAS, I could not admit that it could dispose of the disks in this way, and three "extra" disks are some kind of glitch.
So my stupid question with an almost guaranteed known answer is: can I restore the raidz2 vdev (and thus the entire pool) in case of 3 drives failure/absence? May be there is any magic to "unformat" that 3 drives detached from the affected zpool in the process of creating a new zpool? Anything else?
But the next degree of mystery is this: now I should see only 6 HDDs available for zpool creation, but actually I see 15. What is going on?
p.s. TrueNAS-12.0-U6.1
p.p.s. filed an issue: https://jira.ixsystems.com/browse/NAS-113811
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