Questions tagged [zfs]
An advanced file system that can span multiple disks, heal itself from data corruption, deduplicate data, encrypt, etc.
410
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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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108
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ZFS does not recognize new drive after resilvering
I tested my ZFS resilvering on my new NAS which has a 3-drive mirror zpool. So I attached another 4TB drive to the server in an external USB SATA dock and ran zfs replace /dev/disk/by-id/ata-<...
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zfs mount points are disappearing on reboot. how to fix it?
my zfs mountpoints are disappearing on reboot but able to get it back after import. please suggest me the solution?
root@mfsbsd:~ # zpool import edjstorage
root@mfsbsd:~ # zfs list
NAME ...
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ZFS Pool on internal ssd partition disappears after reboot, pre-existing partition (whatever it is) pops up instead
Mojave 10.14.6, OpenZFS installed with brew (OpenZFS on OS X 1.9.4 Mojave.pkg)
By "disappears" here I don't mean "it's not imported", I mean actually, really disappears (no output ...
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DEGRADED disk is back ONLINE after reboot
I had a degraded disk on a ZFS volume in my FreeNAS server [build 9.10.2-U1 (86c7ef5)] and before trying to replace it, I rebooted the server.
What does the following mean and do I have an issue with ...
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best zpool properties and features for hdd zfs
which properties and features should I use for the normal and mirror pool? (on ZFS on Linux on Ubuntu/Arch/Manjaro)
I have two 4TB HDDs and I want to create two pools:
normal (RAID0): with first 500G ...
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ZFS prevents server to shut down as it keeps disk active
I have a small home sever running with Debian Buster where I have a ZFS filesystem (ZFS: Loaded module v0.7.12-2+deb10u2, ZFS pool version 5000, ZFS filesystem version 5) with a RAID.
As the server is ...
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How to create a storage pool of drives (with existing data) without using RAID?
So I currently have an Ubuntu 20.04 machine that I'm running as a Plex Media Server. It has a 32gb SATA SSD used for boot, swap, /, and /home, as well as a 2TB M2 NVME SSD that I store my media on (...
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ZFS on Linux - one of four drives removed
I have a small server with 4 drive bays in the front, all have an identical 3TB drive. Now ZFS reports one drive is removed. The machine sees the drive but I can’t get the drive to become not removed. ...
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Cache configuration for PostgreSQL/TimescaleDB VM on ZFS with proxmox
I have a proxmox cluster of a single node and I want to start a new VM with a PostgreSQL and TimescaleDB and after a lot of reading about how to tune ZFS volumes for this purpose I still have some ...
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ZFS and RAID configuration in a personal virtualization Proxmox 6.2 server
I happen to have this unused computer, and I upgraded its hardware a bit so I can use it as my personal platform for virtualized small servers. I plan to put Proxmox 6.2 on it but, before I install it,...
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ZFS pool I/O is currently suspended due to disk mountpoint change (sdb to sdc). How can i fix it?
the HDD on which was mounted ZFS pool was physically reconnected and the result is that the zfs can no longer find the device at old location /dev/sdb as the drive got new name /dev/sdc.
$ zpool ...
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FreeBSD ZFS: missing top-level device in zpool
As a result of 2 stupid sysadmin tricks on a FreeBSD 10.4 machine, I have a non-importable zpool in this state:
# zpool import
pool: v
id: 5630710617833891462
state: UNAVAIL
status: One or ...
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How to decrypt octal encoding from zfs diff output?
zfs diff replaces some of the characters in files names with \xxxx (in an octal encoding). Can I decrypt it back with awk or sed or any other common utility (without resorting to a perl or a python ...
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Disk layout: First 512 bytes are intentionally not used by filesystem(ext, xfs, brtfs) and volume management(lvm,zfs,brtfs), is this a design rule?
I suspect that all modern filesystem(ext, xfs, brtfs..) and volume management(lvm, zfs, brtfs...) intentionally avoid using at least first 512 bytes of the disk or partition,
is this true? I know it ...
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rsync: chown "/some-destionation-path/.somefile.jpg.pY2TRG" failed: Permission denied (13)
I'm doing rsync -rlptoghv for transferring a folder from XFS to ZFS. Usually, no problems arise. But sometimes, for some files (and I can't find a pattern), rsync fails to sync file permissions and ...
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ZFS Scrub Errors even after replacing RAM?
I noticed my computer having a lot of ... weird issues. Crashes during compilations that were not reliable, etc. Finally, I noticed ZFS reporting data errors. I ran a memory test and got flakey, ...
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zpool cannot properly import missing pool after system crash
I have a raidz3 zpool on Ubuntu 18.04 with the Ubuntu built-in zfs features, there was a system crash recently, I guess it's caused by an unavailable(failed) disk, and after rebooting, the pool was ...
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ZFS modules suddenly stopped loading - Debian 10
My ZFS modules have mysteriously stopped loading at the point during boot when you would usually unlock the pool with encrypted ZFS on root (Debian 10). It drops into busybox and suggests loading the ...
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Preparing a ZFS based setup for a potential future upgrade
I want to try ZFS on some personal server. From my understanding, it's not possible to add disks to a vdev after it's creation, only to add new vdevs to a pool. Also, it's considered bad practice to ...
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ZFS of whole disks with ashift=12 vs of aliagned partitions?
About to create zpool made of 14 hdd disks, and I see options:
can simple do zpool create -f -o ashift=12 DATA raidz2 disk1 disk2 ...
or
can use eg parted to create one partition on each drive ...
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Directory of an exported zfs pool comes back after removal
When i export a zfs pool, the folder where the the pool was mounted still exists with only some of the datasets the pool has contained before.
Before re-importing I delete the directory where the pool ...
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How to I automatically mount a ZFS pool on an external drive automatically on boot
I recently moved an external/USB 3.0 hard drive on an ubuntu 19.04 desktop system from ext4 to ZFS. Previously, the drive would mount automatically to /media/user/drive_label on boot. If memory serves ...
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ZFS dedup performance optimization
I'm running a VDI server. Many of the VDI users are installing the same apps on their desktops, so zfs set dedup=on vdipool/myDesktop comes in handy.
How can I optimize the performance impact of zfs ...
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ZFS zpool cannot be imported, cause panic if not imported as readonly
After a reboot, ZFS pool never stopped trying to import the pool. It was blocking the boot-sequence and I had to rename the /etc/zfs/zpool.cache to another name, in order to boot the system.
There was ...
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ZFS reporting different disk usage, which one is correct?
I am trying to figure out how much space on disk is used by ZFS, with deduplicaiton eabled.
I have only enabled deduplication, not changed chunk size or anything else.
But depending on the command I ...
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Mounting zfs network shares in Ubuntu LTS 20.04 using cifs- mount error(2): No such file or directory
I have 3 Thecus NAS servers: a N5500 (Firmware: 5.03.02), a N5200XXX (Firmware: 5.03.02), and a N5550, (firmware 2.06.02.5.cdv) each configured as RAID 5. The N5500 and the N5200XXX are using zfs and ...
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ZFS broken on Centos 7.8
I am using ZFSonLinux under CentOS 7, and after a restart, the kernel updated to 7.8. the ZFS modules were not loaded and modprobe zfs said the modules were not found. dkms status was empty and having ...
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ZFS to boot ubuntu in 20.04 for SoHo server. Is this a good idea?
It seems ZFS is much more robust than ext4, specially for handling power failures or bad-blocks/media-corruption.
There's old literature from 2013, 2014... here and there about ZFS as a boot ...
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ZFS Unmount Entire Pool
I'm getting issues when mounting my zpool. Some zfs aren't mounting because "directory exists", aka the subfolders that the subdataset is stored in. Such as tank/media/movies. It says that that /...
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Is it good idea to horizontally partition groups of disks into different ZFS vdevs?
--------------------------- +-------+ --------
| |
| part | vdev 1
| | no redundancy
-----------...
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Not sure if ZFS issue / ATA Linux controller issue?
I've been using ZFS for a few years now, but since moving to a new NAS I've been having a weird issue that I'm not even sure is ZFS-related.
I run a RAID-Z with 4 4TB disks, and every week or so (...
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Grow ZFS RAID-Z[123] without degradation?
I know that on ZFS, the only way to grow a RAID-Z (or RAID-Z2 or RAID-Z3) vdev is to replace the disks with larger ones; there is no way to change the geometry. However, is it possible to do so ...
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Slow SMB Performance over 10GBE(Write)
Does anyone have any experience configuring 10gbe file server with ZFS and SMB?
I have a system up and running but can't for the life of me figure out why the write speeds are so slow.
storage@...
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how to change from zfs to ext4
i accidentally create zfs pool to sda1 with
sudo zpool create -f lxd-zfs-pool /dev/sda1
zpool status output is
pool: lxd-zfs-pool
state: ONLINE
scan: none requested
config:
NAME STATE ...
user1107388
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how to trim SSD cache drive in zfs 0.8
I have upgraded zfs to kmod-0.8.2-1 for SSD trim and trim function works well for normal zfs SSD drive but does not work for SSD cache drive(sdc in the below log). How can I trim it? Thanks in ...
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Retain xattrs in files (macOS files on Linux SMB server)
I run an SMB4 server on Ubuntu Server 19.04 using ZFS as the server file system (separate from the boot drive). I use this server to store files from my Macs (10.7, 10.8, 10.11, 10.12, 10.13, 10.14). ...
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