Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [zpool]

The tag has no usage guidance.

4
votes
1answer
71 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 ...
2
votes
2answers
22 views

ZFS replace disks in freebsd, how and when

I have the following zpool configuration: zpool status NAME STATE READ WRITE CKSUM data ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 da1 ...
3
votes
1answer
557 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 ...
0
votes
0answers
27 views

Replace zpool volume with another

I've been using flynn because I needed a small paas for my projects. Unfortunately I made the decision to host on my flynn cluster (composed by 3 AWS instances) a production app with some important ...
2
votes
1answer
546 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 ...
3
votes
1answer
189 views

ZFS (Freenas) off-lining an apparently healthy drive during scrub

I have a 4 disc RAIDZ config running on Freenas 9.1. Earlier I noticed that one of the drives had been taken offline. I ran smartctl, and all the discs passed SMART. A few days ago the machine had ...
0
votes
0answers
37 views

How to delete the pool with state = Faulted?

I have a pool named test_pool and i can only see it when "zfs import" is run. How can i delete this pool and detach associated device from it ? # zpool import pool: test_pool id: ...
0
votes
1answer
539 views

Can I remove a disk from a zpool raidz2?

Unfortunately I do not really understand zfs. I have a Proxmox 5 node with 5 300GB disk in raidz2. History: zpool create -f -o cachefile=none -o ashift=12 rpool raidz2 /dev/sda2 /dev/sdb2 /dev/sdc2 /...
0
votes
1answer
38 views

ZFS - 2 Striped mirror set to 1 mirror set, how?

Currently I'm running a ZFS striped mirror set: NAME STATE READ WRITE CKSUM data ONLINE 0 0 0 ...
1
vote
1answer
24 views

Hard drive in zpool showed error, but later seemed ok. How do I tell if something is wrong?

My work computer has a 4 hard drives setup in a zpool on an Ubuntu system. I'm trained as a programmer, not IT, but I'm partially responsible for managing my computer. After rebooting the other day, I ...
0
votes
2answers
501 views

Increase rpool size on Solaris 11.3 ESXi Virtual Machine

I'm trying to run updates on my Solaris 11.3 server but I am unable to because there isn't enough space on my rpool. I've tried deleting log files and other useless stuff but it's not enough. ...
2
votes
1answer
160 views

mdadm reclaimed my zfs storage pool

I recently converted a mirrored mdadm partition on Ubuntu 16.04 to a zfs mirrored pool, or so I thought. After a few days of using the zfs pool, I rebooted the system and the zfs pool disappeared. "...
1
vote
1answer
421 views

Where'd my zpool data go?

N.B. I'm a complete noob when it comes to ZFS pools. I created a ZFS pool yesterday across 4 3TB HDDs, like so: 2017-06-10.16:31:08 zpool create data sda sdc sdd sde 2017-06-10.16:31:29 zfs set ...
-2
votes
2answers
132 views

zfs backup script cannot receive destination zpool is renamed

Hello I have an issue with a backup script for ZFS snapshots: basically the break down of the script is this: ### START OF SCRIPT # These variables are named first because they are nested in other ...
1
vote
1answer
595 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 ...
2
votes
1answer
232 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 ...
-1
votes
1answer
64 views

How to export zpool from alternate disk slice?

I need some help in recovering ZFS pool. Here is scenerio. There are two disks - c0t0d0 - This is good disk. I cloned it from other server and boot server from this disk. c0t1d0 - This is original ...
0
votes
0answers
41 views

Missing ZPool after server rebuild

I'm hoping someone can help. I am relatively new to ZFS so please bare with me if I don't fully understand your replies at first. Basically I am running RHEL 6.8 with ZFS installed with a ZPool ...
1
vote
1answer
298 views

Unable to Import Zpool

We are facing an failure of one of our Solaris/ZFS file server. The h/w won't boot, we are not that worried about the server but the data is precious. We took out a set of 8 drives in raidz2 pool and ...
3
votes
1answer
320 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 ...
1
vote
1answer
777 views

zfs change block size without going offline

Given a raidz1 vdev on FreeBSD 10 with this config: root@gw:~ # zpool status pool: data state: ONLINE status: One or more devices are configured to use a non-native block size. Expect ...
7
votes
1answer
1k 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 ...
0
votes
3answers
101 views

Is there a zpool configuration other than raidz2 which lets me survive ANY 2 out of 4 failures?

I am going to purchase a HP Microserver gen8 system for a home fileserver and it contains 4 drive bays. I will use those four drive bays to create a single zpool for mass storage. My goal is the ...
3
votes
0answers
398 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 ...
4
votes
0answers
299 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 ...
1
vote
0answers
99 views

zpool didn't increase after adding disk slice

i added formatted 3 different slices from a disk and added to a zpool but i didn't increase his size. This is the pool size before adding the slide root@snr-hosting-bta-02:~# zfs list z3363af79-edf5-...
1
vote
0answers
176 views

ZFS issue after enlarging image

I created a new img using the following command: truncate -s 250G disk.img and I replace the existing image that I used for zpool with that one using (lxd.img was 2G): zpool replace lxd lxd.img ...
0
votes
0answers
427 views

ZFS mirror migrated to other system with dd -> zpool import fails

I'm pretty new to ZFS and this might be an easy problem (but I don't find any discussions about how to do this): I've messed up a FreeBSD installation on a Root-on-ZFS mirrored ZFS Pool on a ...
1
vote
1answer
135 views

zfs zpool degraded drive missing

I have a degraded zpool called storage of 4 6TB Drives in 2 mirrors. One of the drives on the second mirror is unavailable. All cables seem to to be plugged in physically. Did my device id change? ...
1
vote
2answers
2k views

zpool forgot all data devices of a pool: how to bring them online again?

My Debian server is running ZFS on Linux. Today I had to reboot it two times due to software upgrades. A first reboot because of ZFS update from some 0.6.4-1.2-1-wheezy to 0.6.5.2-2-wheezy, which went ...
7
votes
2answers
3k 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-...
4
votes
1answer
647 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 ...
4
votes
1answer
6k 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 ...
1
vote
0answers
293 views

zfs pools unavailable, disks shared with other pools

My ZFS pool called data do not mount anymore after a shutdown. Maybe there was some automatic update on the computer. I Don't know. zpool status returns no pools available zpool import returns ...
3
votes
1answer
495 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 ...
5
votes
1answer
2k 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, ...
2
votes
2answers
1k 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 ...
1
vote
2answers
218 views

ZFS pool members start sectors overwriten, including partition table and L0 L1 labels. Data and L2 L3 labels intact. How to recover?

Have two identical 2Tb disks in mirror ZFS pool. Unfortunately, overwriten start of disks with errorneus attempt to attach them via HP Smartarray P400 RAID controller as separate RAID0 logical volumes ...
1
vote
1answer
462 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 ...
0
votes
0answers
210 views

zfs raidz can not read from disk

my freebsd 10 server running on zfs raidz. I have a problem with reading files, test dd of=/dev/null if=/tmp/test/1000mb.bin bs=1024k count=1000 953+1 records in 953+1 records out 1000000000 bytes ...
9
votes
4answers
13k 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 ...
3
votes
2answers
3k 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 ...
0
votes
1answer
99 views

Can't find created directory on zfs

I'm using openSUSE 13.1. I created a new directory on a zpool zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off but I'm not looking on that... So I do it again but I'm getting... zfs create ...
0
votes
2answers
2k 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 ...
2
votes
1answer
570 views

Why is the size of a zfs filesystem after sending it to a different pool different?

I've move a zfs filesystem from a pool made of a bunch or mirror vdevs to another pool made of two raidz1s with the following command # zfs send -R pool/project@moving | zfs recv tank/project As far ...
1
vote
2answers
326 views

2 drive failures in zpool raid

I have a question if I'm going to be able to restore this partition if I order replacement drives. zpool clear didn't seem to do anything. zpool status Partition1 ...
5
votes
2answers
9k 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 ...
9
votes
2answers
18k 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: ...
13
votes
4answers
24k 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? ...
6
votes
4answers
9k 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. ...