Questions tagged [zpool]
102 questions
18
votes
6 answers
Need to identify disk in zpool ... how?
I need to replace a bad disk in a zpool on FreeNAS.
zpool status shows
gptid/5fe33556-3ff2-11e2-9437-f46d049aaeca UNAVAIL 0 0 0 cannot open
How do I find the serial # of that disk?
More:
glabel status gives:
…
![](../../users/profiles/132625.webp)
Dan
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12
votes
3 answers
ZFS pool slow sequential read
I have a related question about this problem, but it got too complicated and too big, so I decided I should split up the issue into NFS and local issues. I have also tried asking about this on the zfs-discuss mailing list without much success.
Slow…
![](../../users/profiles/313604.webp)
Ryan Babchishin
- 6,160
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12
votes
2 answers
Need to replace disk in zpool ... confused
I need to replace a bad disk in a zpool on FreeNAS.
zpool status shows
pool: raid-5x3
state: ONLINE
scrub: scrub completed after 15h52m with 0 errors on Sun Mar 30 13:52:46 2014
config:
NAME STATE …
![](../../users/profiles/132625.webp)
Dan
- 939
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- 25
11
votes
4 answers
Is it possible to detach and reattach a ZFS disk without requiring a full resilver?
I have a ZFS mirrored pool with four total drives. Two of the drives are intended to be used for rotating offsite backups. My expectation was that after the initial resilvering I could detach and later attach a disk and have it only do an…
![](../../users/profiles/14890.webp)
STW
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10
votes
4 answers
zpool status reports error ... what next?
On our FreeNAS server, zpool status gives me:
pool: raid2
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the…
![](../../users/profiles/132625.webp)
Dan
- 939
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8
votes
1 answer
ZFS vdevs accumulate checksum errors, but individual disks do not
I'm running a vendor-specific derivative of FreeNAS 9.3.
My trouble started when I installed a new JBOD chassis to add two new vdevs into my pool, and the chassis had a bad board. During this time, I was seeing SAS power errors on the drives on the…
![](../../users/profiles/373582.webp)
user260467
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7
votes
2 answers
zpool import: volume FAULTED with corrupted data, is it possible to save some data?
I was using Freenas 8.2 and decided to upgrade to 9.2. All seem to go well, upgraded zfs to 28 and rebooted. During next boot it seem to take forever and at some point I decided to turn off the machine. I guess this is what caused the problem.
When…
![](../../users/profiles/167123.webp)
Uphill_ What '1
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6
votes
1 answer
ZFS on Linux/Ubuntu: Help importing a zpool after Ubuntu upgrade from 13.04 to 13.10, device IDs have changed
I have updated Ubuntu from version 13.04 to version 13.10, only to discover that the SATA disks IDs have changed, and my ZFS pool now fails.
On new Ubuntu 13.10 the disk IDs are now ata-* instead of scsi-SATA_*.
This is the pool status after the…
![](../../users/profiles/204399.webp)
Manolo
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6
votes
2 answers
ZFS Recover from Faulted Pool State
I have a six disk ZFS raidz1 pool and had a recent failure requiring a disk replacement. No problem normally, but this time my server hardware died before I could do the replacement (but after and unrelated to the drive failure as far as I can…
![](../../users/profiles/196203.webp)
Nick
- 163
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- 5
6
votes
1 answer
FreeNAS: Renaming a zpool
Now that our server is set up, I would like to rename our zpools.
I read somewhere that the way to do this is export & re-import under the new name. But will all my mount points and shares remain intact? Or will I have to set those up again?
![](../../users/profiles/132625.webp)
Dan
- 939
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6
votes
3 answers
ZFS, raidz1: Why is the volume size (42T) so much smaller than the pool size (50T)?
I have a pool of 28 2TB-disks (56T) in 4 arrays of 7 disks. Since it's raidz1 (~RAID5), I'd expect 1 disk to be used for parity in each array, so the resulting volume should be 2TB*4*(7-1)=48TB, right?
Now, what I see on my system:
$ zpool list…
![](../../users/profiles/107725.webp)
Pavel
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5
votes
1 answer
ZFS pool degraded on reboot
I have a Ubuntu server set up with a 14-disk ZFS raidz2 pool.
About 80% of the time, on reboot, I will end up with a degraded pool with two of the disks marked as faulted. The drives that are faulted aren't always the same, but it is always exactly…
![](../../users/profiles/103421.webp)
David Chappelle
- 179
- 5
5
votes
1 answer
How to add more physical disks to a mirror vdev (to increase redundancy)?
Can more physical drives be added to mirror vdevs after a zpool has been created?
For example, if a zpool is created using:
zpool create test_pool mirror /dev/sd0 /dev/sd1 mirror /dev/sd2 /dev/sd3
Can more drives be added to the vdevs to increase…
![](../../users/profiles/303223.webp)
Greg
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5
votes
0 answers
ZFS restarts resilvering over and over again. Also very slow
Here's one of my Solaris 10 servers after a couple of disk replacements in a zpool
pool: volume
state: ONLINE
status: One or more devices is currently being resilvered. The pool will
continue to function, possibly in a degraded…
![](../../users/profiles/107725.webp)
Pavel
- 988
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5
votes
1 answer
ZFS shows pool state FAULTED, but all devices are ONLINE; how can I recover my data?
Our 100TB NAS based on FreeNAS 8 was unexpectedly powered off due to power failure. After turning it on back, 100TB zpool "projects" was unmounted with state "FAULTED".
I've tried zpool import -fFX, it was running for about 20 hours, but nothing…
![](../../users/profiles/274645.webp)
Sergey Andrianov
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