Questions tagged [zpool]

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19 votes
6 answers
52k views

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? ...
d0g's user avatar
  • 969
12 votes
4 answers
25k views

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 ...
STW's user avatar
  • 1,019
12 votes
2 answers
20k views

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: ...
d0g's user avatar
  • 969
12 votes
3 answers
13k views

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-...
Ryan Babchishin's user avatar
10 votes
4 answers
20k views

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. ...
d0g's user avatar
  • 969
8 votes
1 answer
3k views

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 ...
user260467's user avatar
7 votes
1 answer
8k views

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 ...
Greg's user avatar
  • 1,677
7 votes
2 answers
17k views

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 ...
Uphill_ What '1's user avatar
7 votes
0 answers
1k views

Recovering/importing ZFS Linux pool with duplicate pool name

I did something very stupid today in attempting to add a third mirror to an existing Linux zpool named backup. Suffice it to say that I made a couple errors because I don't really do much admin with ...
Athanasius's user avatar
6 votes
3 answers
3k views

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?...
Pavel's user avatar
  • 1,058
6 votes
2 answers
11k views

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 ...
Nick's user avatar
  • 163
6 votes
1 answer
6k views

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 ...
d0g's user avatar
  • 969
6 votes
1 answer
2k views

Send email when zpool drive dies?

I couldn't access my media drive the other day. SSH'd into my media server to see what was up. ZFS pool wasn't even mounted. When I got it running again, I saw that it was degraded and one of the ...
mpen's user avatar
  • 433
6 votes
1 answer
9k views

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 ...
Manolo's user avatar
  • 63
5 votes
3 answers
4k views

ZPOOL Mirror setup

What is the best setup for an zpool intended for database big inserts or TCP/IP dumps (i mean sustained high write throughput using 4 disks ? I want buy 4 Wd RE4 2TB drives and get the more power i ...
Avlin's user avatar
  • 238
5 votes
2 answers
14k views

Is it possible to change filesystem properties for an existing ZFS pool?

Suppose I created a pool with compression=on, and later wanted to turn off compression in-place - is that possible and if so how? I'm using Zevo CE on OS X in case that makes any difference (zpool ...
GJ.'s user avatar
  • 539
5 votes
3 answers
19k views

how do I add a new disk to ZFS and make it available existing mountpoints if the current pool is root pool?

My S11 server has the following configuration: disk #1 is used for rpool, which is the root pool I want to add disk #2 to increase the size available for the already mounted folders, but I can't add ...
RaamEE's user avatar
  • 195
5 votes
1 answer
2k views

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 ...
David Chappelle's user avatar
5 votes
2 answers
5k views

can I consolidate a multi-disk zfs zpool to a single (larger) disk?

I have this zpool: bash-3.2# zpool status dpool pool: dpool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM ...
rmeden's user avatar
  • 192
5 votes
1 answer
4k views

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, ...
Sergey Andrianov's user avatar
5 votes
0 answers
779 views

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 ...
Pavel's user avatar
  • 1,058
4 votes
2 answers
1k views

Why does ZFS RAIDZ2 only use 2GB of data when I create a 1GB File

I have created a ZFS RAIDZ2 / Raid 6 file system, which from what I believe will store parity on 2 disks. root@zfs-demo:/data# zpool status pool: data state: ONLINE config: NAME ...
PrestonDocks's user avatar
4 votes
1 answer
743 views

ZFS: device vdev wandered faulting zpool

I have a zpool thats now showing in a FAULTED state after a power outage rebooted the server & devices names got thrown around. I understand I messed up by adding vdevs by device name, but didnt ...
tango's user avatar
  • 43
4 votes
1 answer
632 views

When does "zpool scrub" delete files automatically?

Background is a general discussion about ZFS and the claim that in case of permanent errors to files, it automatically deletes files unless a correct copy is available. That sounded pretty wrong to me ...
Thorsten Schöning's user avatar
4 votes
1 answer
2k views

ZFS permanent error; options for recovery

Background: small personal server, email, web, shell, etc, for family and friends. SunOS 5.11, snv_113 from November 2008. Server built in 2009. I believe that was either opensolaris or Solaris early ...
anastrophe's user avatar
  • 5,548
4 votes
1 answer
9k views

No more space on FreeNAS 9.3. But only half of space actually in use based on "du -sh" command

This morning I got a warning on my FreeNAS 9.3 machine about "Not enough space" warning: The capacity for the volume 'SeanVolume' is currently at 85%, while the recommended value is below 80%. It's ...
陳敬翔's user avatar
4 votes
0 answers
1k views

What are "indirect-X" after zpool remove?

After zpool remove, the removed disks are shown as indirect-0, indirect-1, indirect-2, and so forth. What are they? How can I get rid of them? Will they pose any problems? Demonstrate: There were ...
midnite's user avatar
  • 151
3 votes
3 answers
15k views

How to partition drive for ZFS

I'm trying to create a ZFS pool using the following command: zpool create MyPool disk /dev/sda However, I get the following error: cannot use '/dev/disk': must be a block device or regular file ...
E-rich's user avatar
  • 137
3 votes
1 answer
1k views

Solaris: Encrypting a zpool NOT a dataset within a pool?

What is the way in Solaris to encrypt a zpool? All the documentation supporting ZFS encryption talk about using "zfs create" and specifying a dataset WITHIN a pool. I just became SA for several ...
Jon Smith's user avatar
3 votes
1 answer
2k views

zfs remove wrongly added device

I accidentally added a device as normal pool device instead of cache device. Is there a way undo this? (I basically forgot to type cache when adding the device) I can't remove it root@dmi-vault2:~# ...
Bas's user avatar
  • 31
3 votes
1 answer
902 views

Expand existing RAID1 zpool into RAID10 zpool

I'd like to expand/convert my existing RAID1 (2x 3TB mirror) zpool to RAID10 zpool by adding 2 more 3TB HDDs without losing (or moving) data stored on my existing pool. The final result will look ...
MrQ's user avatar
  • 33
3 votes
1 answer
6k views

ZFS pool degraded with faulted disk, export and replace not working

I run into troubles after trying to add more disks to my Ubuntu server device. While being a total beginner I powered the server off, added two more disks and restarted the system only to find one of ...
MatsonWatson's user avatar
3 votes
2 answers
2k views

ZFS - zpool replace never finishes

I have a 5 x 3TB raidz1 array on a ubuntu 14.04.1 server. Last month, one of the drives died (audible clicking). I was able to replace the drive with zpool replace RAID <dead drive> <new ...
KernelSanders's user avatar
3 votes
2 answers
7k views

Unable to zpool drive: is in use and contains a unknown filesystem

Created raidz1 drive array on CentOS8. Five drives and after reboot zpool would not load. Did a zpool import -a, to import the zpool and datasets. I had a missing drive, which bugs me to no avail, I'...
DaBus's user avatar
  • 51
3 votes
1 answer
615 views

zpool status shows drives are defaulted, but they seem okay. Can I add them back?

zpool status is reporting defaulted drives. But they actually appear to be okay. Is it possible to add them back? $ dev/disk# zpool status -v pool: darkpool state: DEGRADED status: One or more ...
Louis Waweru's user avatar
3 votes
1 answer
1k views

Faulted zpool recovery - can I dd some disks to new disks to allow me to scavenge donors?

I am in the process of trying to recover a pool that had been degraded and neglected, then had a second mirror member fail, resulting in a faulted pool. For whatever reason, the spare never ...
Dirk's user avatar
  • 33
3 votes
1 answer
2k views

cannot import a zpool volume : I/O error

this is on nexenta open storage. I have a zpool that is in UNAVAIL state because of some disks. # zpool import -F pool: delta id: XYAZA state: UNAVAIL status: One or more devices are ...
Nikhil Mulley's user avatar
3 votes
1 answer
1k views

Importing an exported pool on Solaris 11 fails

Unable to import an exported pool. Based on the info below, am I able to somehow import the pool? Or, is there a way to retrieve the data from the drive itself? There is no corruption on either ...
mfridman's user avatar
3 votes
1 answer
816 views

zpool disappears whenever solaris cluster reboot or power cycle

I have following setup Oracle Solaris 10 -> 5.10 Generic_147147-26 sun4v sparc Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit production Oracle Solaris Cluster 3.3u2 for Solaris ...
Halit Sakca's user avatar
3 votes
1 answer
2k views

Replaced a dead disk in a ZFS pool. After resilvering finished, the status look weird :/

I replaced a dead disk in a ZFS pool (on FreeNAS-11.1-U6.3) following the hints I found at Need to replace disk in zpool ... confused ... # zpool replace raid2 gptid/f00-whatever-id-that-was-...
rror's user avatar
  • 31
3 votes
0 answers
1k views

ZFS slow read speed on 8 drive 4 vdev striped mirrors

I have 8 3TB WD Red SATA drives sdb through sdi i use in my pool. My boot and OS drive is a an 850 EVO SSD on sda. The 8 WD drives are on a Supermicro AOC-SAS2LP-MV8 Add-on Card, 8-Channel SAS/SATA ...
CB40's user avatar
  • 31
3 votes
0 answers
973 views

Can't remove zfs log device from pool

I run a FreeBSD 9.0 server with ZFS pool version 28 and ZFS version 5. I had two pools with a log on ssd's two partitions. These pools was created on FreeBSD 8.2 with ZFS pool version 15, and ZFS ...
netmano's user avatar
  • 269
2 votes
1 answer
482 views

ZFS disk in two pools after reboot?

I'm pretty new to ZFS, so perhaps I'm reading this wrong. After rebooting my server I had to reimport my pool, and upon doing some was presented with this state: # zpool status -v pool: data ...
Sam Martin's user avatar
  • 2,044
2 votes
2 answers
1k views

Cannot create zpool, how to get rid of intel raid volume?

This is a FreeBSD 9.1 amd64 computer. It has 5 disks installed. The ada0 and ada1 disks are used with a hw raid to provide the root filesystem: root@gw:/home/gandalf # ls /dev | grep ada ada0 ada1 ...
nagylzs's user avatar
  • 809
2 votes
2 answers
4k views

Can I choose a sparse file as vdev for a zfs pool?

man zpool states that a vdev for a zfs pool can be a "regular file". Can I specify a sparse file (the warning about the integrity of the file being determined by the underlying filesystem should ...
Kalle Richter's user avatar
2 votes
1 answer
320 views

ZFS root pool free space

I have an openindiana (oi_151a7) box where I used 30GB for the root partition during installation. This has become rpool1. I cannot figure out how to make the remaining 202 GB available. Looking for ...
Jepper's user avatar
  • 376
2 votes
2 answers
1k views

Errors on a zpool filesystem

I'm using ZFS on a Debian 9 machine. This machine has been working for years without any problem until today. The zfs pool is mounted on top of a RAID system, controlled by hardware (so only one drive ...
marolafm's user avatar
  • 123
2 votes
1 answer
1k views

Disk replace breaks disk naming convention in zpool

After replacing two broken disks in my RAID-Z2 pool, the output of zpool status looks strange. The disks are addressed with their full path and also seem to contain 'slices', which all other disk don'...
b2c's user avatar
  • 21
2 votes
1 answer
699 views

Move data from root ZFS into child filesystem

I have a zpool (pool verion 13, FS version 3, called tank0) with about 2.5TB of data in the root of the pool (i.e. directly in /mnt/tank0). OS is FreeBSD, actually FreeNAS version 0.7.2. I would like ...
tomfanning's user avatar
  • 3,378
2 votes
1 answer
2k views

Why is the available space not increased when i increase the quota of the ZFS share?

I'm not very familiar with ZFS and need to increase the size of an ZFS share on our FreeNAS. When i do zpool list i see that we have 2 ZFS pools: NAME SIZE ALLOC FREE EXPANDSZ FRAG ...
CodeNinja's user avatar
  • 325