Questions tagged [zfs]
An advanced file system that can span multiple disks, heal itself from data corruption, deduplicate data, encrypt, etc.
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How to easily access data on ZFS drive connected directly to Windows PC in case of NAS failure? [duplicate]
I am aware of the question Access a ZFS volume in Windows?. However it is 12 years old. There are some newer answers, however, they are not really clear.
I am setting up TrueNAS on an old PC for a ...
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recurrent zfs read and write errors while smart tests are ok
I'm using OpenZFS 2.1.5 on Ubuntu 22.04.
zpool status -v show recurrent read and write errors on one of my mechanical drives. However, SMART test doesn't show any problem with the disk. By recurrent I ...
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How to bind a folder with idmap on ZFS with systemd-nspawn
It seems that as of Ubuntu 23.10, ZFS now supports idmapping. I wanted to use this to bind mount a ZFS mount /zpool/secure to an nspawn container with root /zpool/kiba, so that the bound mount would ...
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Proxmox : 8 SAS (Data) and 2 SSD (OS) Setup (SW/HW RAID and VMs)
I'm noob on homelab and server setup, that's why I'm calling to your support
Bellow is the main list of my server's components :
CPU : 1 x Intel Xeon Silver 4208
RAM : 5 x 16Gb DDR4 ECC
RAID Card : ...
KisSme
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Postgres' pg_total_relation_size returning unexpected table size for a zfs-based tablespace
I have Postgres 15.1 running on Ubuntu 20.04. Basic FS is ext4, but I have mounted zfs onto a sparse file like this (for compression testing purposes):
truncate -s 100G zfspart.dat
zpool create -o ...
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How to deal with the "Some supported features are not enabled" warning in zfs?
I have been running zfs on root in ubuntu 18.04 and recently did a release-upgrade to 22.04. With it, zfs was upgraded from 0.8.something to 2.1.4.
Now, my zpool on the laptop prominently informs me ...
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SMART error on disk used with ZFS and mdadm
For some time now I've been getting emails like the following after every time I reboot my workstation (which is called 'charm').
Subject: SMART error (ErrorCount) detected on host: charm
This ...
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Autofs trying to mount ZFS filesystems and failing
I created four filesystems using zfs on my T2000 running Solaris 11.3. Two automatically mount on boot (as they should) but two fail with the error message from autofs that the mount points are not ...
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Which permissions do I have to allow for zfs send
I'm trying to mirror some snapshots through zxfer as a user, on FreeBSD 13.1-RELEASE, but I get stuck with
% zxfer -dF -I com.sun:auto-snapshot -O zxfer@zfshost -R zroot/www zroot/backup
warning: ...
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How to copy an encrypted zfs filesystem without preserving the encryption key
I want to copy an encrypted filesystem (z/enc/a) from one computer (source) to another, and have it inherit the encryption key from the parent filesystem of the target system. I also want to compress ...
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How to make Windows read ext4, zfs, etc. linux drives?
In linux packages like ntfs-3g enable linux systems to read and write to NTFS drives. However when I connect a drive that was previously used in linux to a Windows system, Windows does not recognize ...
ondo3294
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Confusion about NTFS compression and `du` on ZFS (was: How to *really* disable NTFS compression?)
I am using ZFS with compression+dedup on my host system and use Qemu/KVM for virtualization. I wanted to let ZFS do it's job and disable Windows 10's NTFS compression feature (both, CompactOS and NTFS ...
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XYRATEX HB-1235 Complete Array Dropping
I have an XYRATEX HB-1235 connected to a Solaris 11.4 system via a single SAS cable to an LSI controller. The drives in the array are SATA.
Every now and then, possibly due to a slight power flicker (...
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How to activate HD indicator lights on Dell PowerEdge 710 in Linux
I have a particular drive that is failing (/dev/sdb)
I need to replace the failed drive but I am not sure which it is... I should have documented what drives were in what slots and what their devs ...
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ZFS Mirror + Stripe vs RaidZ
I am planning to setup a TrueNAS Scale zfs diy NAS for the first time.
Following disks exist in this NAS:
2x 3TB HDD
2x 2TB HDD
1x 1TB HDD
1x 250GB SSD
Wishes towards the system :
There is a ...
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Is using ZFS L2ARC (secondarycache) cache, without ARC (primarycache) possible?
I Have a "home lab" system (Ubuntu 22.04 on i3-9300 with 32G ecc-ram, 10G of witch is dedicated to hugepages) currently holding 2 zfs raidz1 pools, one with 3x2TB WD-RED and nvme as log and ...
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Inconsistent behavior from 'find' on zfs under Linux
I was checking to see if I had multiple copies of python on my system today, and I got some super strange behavior from find:
mark@neverland:~/repos/lpod-python$ ls -i /bin/python3.10
534638 /bin/...
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zpool won't import after crash while resilvering
With triple-mirrored vdevs, I'm really not sure why I can't re-import anyway. There was also a read cache vdev, but that is no longer connected, though that doesn't seem to be the issue. I've all ...
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143
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Is it possible to automatically take zfs snapshots on boot or shutdown?
I want to create a convenient solution for full system (root-on-ZFS) backups.
The idea is to create a snapshot of the whole system on startup (before any writes to FS) or as a last step of shutdown ...
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How to undo rm -rf something on ZFS without a useful snapshot
So I mistakenly fell into the classic beginner's trap and reused the wrong and worst command in my .bash_history, namely rm -rf somefolder/*. I'm aware of things I could have done previously, which ...
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Disable Bios memory scramble fixes ram issue
I am looking for advice on an issue.
TL:DR
Problem: ram causing screen flickering
Solution: disable memory scramble in bios fixes
Question: is the ram stick corrupted or is this a buggy vbios? Am I ...
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140
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mount zfs pool with rootfs
I'm using proxmox and failed to setup the firewall correctly. Now I'm lockout of ssh and the webui.
To recover I'm trying to mount the zfs raid on the rescue image of the dedicated root server.
For ...
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Getting No Data Available when using cp to copy a file (but file exists)
I am trying to copy a file with cp in Linux, and am getting an error: No Data Available
The file exists in my FS:
> ll formation_xrpu_personnalisation_27-09-2021\ 15\:33\:43.webm.mov
-rw-rw-r-- 1 ...
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Can I read zpool with missing top level vdev?
I am new to ZFS and because of ignorance, I make terrible mistake. Delete zvol which is top level vdev of a pool. So I'm looking for a way to gather unbroken data from the pool.
Make long story short:
...
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ZFS write performance slow after scrub
My ZFS pool consists of 4 mirrors with 2 disks each (4TB, 6TB, 6TB, 6TB) and just recently one of the 6TB mirrors went into a degraded state which was fixed by using the scrub command (zpool scrub ...
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How do I remove old ZFS snapshots
After running updates on Ubuntu I receive a warning about my ZFS filesystem. Is there a utility or script I can use to remove old snapshots? Below is the message:
ERROR couldn't save system state: ...
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zfs disk drive letter changed. how to reimport by id
I had a power outage that caused my drives to shuffle their assignment. /dev/sdk is now assigned to a drive in a different pool. I have been searching around but not found a proper way so far to ...
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FreeNAS: ZFS array 'removes' multiple drives
Got a bit of an alarming situation here. Hope someone can help me figure out what's going on.
Background
I've built a ZFS server running FreeNAS for backup and storage about five years ago, starting ...
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How to zfs send an entire filesystem
I am trying to copy an entire filesystem between 2 machines.
Based on documentation -R on zfs send should
"Generate a replication stream package, which will replicate the specified file system, ...
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How does zfs promote work and what are the consequences of using it
I know that zfs promote swaps a clone with the master, but other than that the documentation does not mention anything.
What consequences have promoting a dataset?
Can I just promote them back and ...
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How to mount a zfs clone
Based on this instructions I should be able to make a clone of a zfs volume using commands like so:
$ sudo zfs snapshot -r zfs/logs/test@tmp-1236
$ sudo zfs clone zfs/logs/test@tmp-1236 zfs/logs/test-...
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How can I read zfs spa stat
In this pr, add some spa stat like simple_trim_bytes_failed , but how can I read these stat ?
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Should ZFS RAID-Z2 theoretical maximum be 256+2 drives?
For RAID 6 in wiki, the extra priority check bit Q is calculated by shifting of bits.
https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_6
Suppose we would like to distribute our data over n {\...
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ZFS - Determine Bottleneck performance
I've got a Z3 pool with 9 10TB drives , under a Dell PowerEdge R730xd running as a mixed OS virtual machine host.
Two pools exist:
rpool - The SSD mirrored pool, used mostly for root drives in VMs.
...
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ubuntu with experimental zfs creates enormouns amount of /var/lib/ filesystems
Ubuntu creates enormous amounts of legacy filestystems on my zfs, like:
rpool/ROOT/ubuntu_j63w4a/var/lib/00bc09e20e8a08d6f3628e50ff5c4368414dd69c885c013b480adf8f388eb93f legacy
rpool/ROOT/...
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DD ZFS Disks: The pool metadata is corrupt
I've was doing a full sync to another ZFS server when suddenly my main pool errors out and gets in a degraded state. Later that day, the PSU of the server died.
Perhaps it had something to do with the ...
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ZFS 3 Disk Mirror Pool with 1 Disk Removed Occasionally
I have a ZFS pool that contains 3 disks mirroring each other. I would like to be able to take one of the disks and store it offline and offsite for a few months then re-introduce it to the pool, sync ...
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Can ZFS and BtrFS handle files larger than physical discs?
Are ZFS and BtrFS able to handle files that are larger than one physical disk so that such a huge file spans over multiple physical discs?
I consider lifting up my file server to a VM. Currently the ...
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ZFS fixing improper drive replace
I recently detected failing hard-drive in my ZFS raid-5 array. So i bought drive, shut-down & replaced failing one. I'm afraid I should have removed failing drive from the pool first. It is ...
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ZFS NFSv4 ACLs not displaying on the client side
I'm running ZFS [2.0.3] on Debian 10 with NFSv4 shares, setting xattr: on and acltype: posixacl, with my export using zfs set sharenfs being:
rw=@@hosts,async,no_subtree_check,no_root_squash
I can ...
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Replace ZFS in use hot spare
Here is the current status of my zpool
NAME STATE READ WRITE CKSUM
store ONLINE 0 0 0
mirror-0 ...
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Could ZFS fix silent corruption on a single drive with two mirrored partitions?
ZFS can detect silent data corruption (or "bitrot"); with a proper mirroring or raidz setup it may also repair such corruption. Thus, would it be possible to split a disk into two (or more) ...
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Dell Poweredge Controller and ZFS
I've been looking at many different option for a home backup server. I'll going to be getting a dell poweredge r430. It contains a perc h730 mini. It has dated hardware, and I plan to pare it with ...
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First time using ZFS or RAID: Data Backup
I've never used RAID before or ZFS for that matter, though I've always admired them. I've been using MX Linux for 2 years, so I'm still pretty fresh to deep Linux.
My idea is for a long-term backup of ...
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Does using USB drives with identical World Wide Name (WWN) risk data loss?
I bought two m.2 SSD enclosures with identical World Wide Name (WWN). (I didn't know such was possible.)
Will this cause data corruption if I use them on the same Linux (Ubuntu 20.04.02) server? If I ...
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Docker still using zfs storage driver after re-installing to ext4 partitioned zvol
Disclaimer: This is cross-posted on reddit but to no success and as I am quite desperate to get all my services up and running again, I now turn to you...
I had docker installed on my server (running ...
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ZFS convert from RAID10 to RAID1 (mirror)
I have a ZFS array with 4x4TB, configured in a RAID10 so that it's two mirrors striped together. I want to convert this to 2x10TB, so I want only one mirror that consists of the two disks.
Is there a ...
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How exactly do btrfs/ZFS (and related filesystems) prevent bit rot?
It seems that, since btrfs development began, various communities have touted both it and ZFS as inherently more advanced filesystems for preventing corruption, bit rot, etc.
What features of btrfs or ...
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Is ACL inheritance only at file creation time on zfs?
I'm having trouble understanding how ACLs work on ZFS as compared to how they work on a Windows NTFS system. (In particular, I'm using a TrueNAS 12.)
I create a SMB share ("smbtest"), and I ...
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Cannot boot alternate boot environment in openindiana
i have installed two boot environment on my openindiana hipster 202004 server, rpool and rpool1.
These are the steps i followed for my second boot environment:
zpool create -f rpool1 c5t3d0s0
beadm ...
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