#zpool — Public Fediverse posts

Diagnosing Proxmox ZFS latency? Use zpool iostat for real-time per-vdev IOPS/bandwidth, then zdb -C for pool config and deeper structural insight. Pair with arclist to spot ARC pressure. Practical commands for ZFS 2.x on PVE 7/8. #proxmox #snippet #zfs-performance #zpool-iostat #ValtersIT

https://www.valtersit.com/vault/proxmox-zfs-pool-performance-diagnostics-with-zpool-iostat-a-6e28ba/

Added 𝗨𝗣𝗗𝗔𝗧𝗘 𝟮 - 𝗭𝗙𝗦 𝗠𝗶𝗿𝗿𝗼𝗿 𝗳𝗼𝗿 𝗥𝗲𝗱𝘂𝗻𝗱𝗮𝗻𝗰𝘆 to 𝗜𝗻𝘀𝘁𝗮𝗹𝗹 𝗙𝗿𝗲𝗲𝗕𝗦𝗗 𝘄𝗶𝘁𝗵 𝗢𝗻𝗲 𝗖𝗼𝗺𝗺𝗮𝗻𝗱 article.

https://vermaden.wordpress.com/2024/11/10/install-freebsd-with-one-command/#UPDATE2

#verblog #freebsd #install #space #partitions #gpart #zfs #zpool

Added 𝗨𝗣𝗗𝗔𝗧𝗘 𝟮 - 𝗭𝗙𝗦 𝗠𝗶𝗿𝗿𝗼𝗿 𝗳𝗼𝗿 𝗥𝗲𝗱𝘂𝗻𝗱𝗮𝗻𝗰𝘆 to 𝗜𝗻𝘀𝘁𝗮𝗹𝗹 𝗙𝗿𝗲𝗲𝗕𝗦𝗗 𝘄𝗶𝘁𝗵 𝗢𝗻𝗲 𝗖𝗼𝗺𝗺𝗮𝗻𝗱 article.

https://vermaden.wordpress.com/2024/11/10/install-freebsd-with-one-command/#UPDATE2

#verblog #freebsd #install #space #partitions #gpart #zfs #zpool

Gestern wurde festgestellt, dass der „Insight Aggregator“ nicht mehr startet. Mit Unterstützung wurde eine beschädigte Datenbank als Ursache ermittelt. Zusätzlich zeigte sich ein Defekt am zpool, der vermutlich die Datenbank beschädigt hat. Die betroffenen Daten wurden entfernt, damit sie neu erstellt werden können. Danach wurde zpool scrub zroot ausgeführt und das Problem war behoben.

#OPNsense #Plugin #Zpool #Reparieren #Konsole #Console #Firewall

Gestern wurde festgestellt, dass der „Insight Aggregator“ nicht mehr startet. Mit Unterstützung wurde eine beschädigte Datenbank als Ursache ermittelt. Zusätzlich zeigte sich ein Defekt am zpool, der vermutlich die Datenbank beschädigt hat. Die betroffenen Daten wurden entfernt, damit sie neu erstellt werden können. Danach wurde zpool scrub zroot ausgeführt und das Problem war behoben.

#OPNsense #Plugin #Zpool #Reparieren #Konsole #Console #Firewall

Striped poll consists of two drives as well. At the end, I should have #Raidz1 poll with 4 drives. Finally, having the same size.

#homelab #zfs #zpool #nas

Striped poll consists of two drives as well. At the end, I should have #Raidz1 poll with 4 drives. Finally, having the same size.

#homelab #zfs #zpool #nas

"ZFS with a striped configuration can be more space-efficient compared to other setups like RAIDZ, as it does not require additional space for parity. However, the actual usable space will depend on the number of disks and the specific configuration used."

With this in mind, I started to migrate data from striped #zpool to #Raidz1

There was around 10TB of data to move. But after moving all that data, it took around 20TB on a two-drive raidz1. Some #BlackMagicFuckery

#zfs #nas #homelab

"ZFS with a striped configuration can be more space-efficient compared to other setups like RAIDZ, as it does not require additional space for parity. However, the actual usable space will depend on the number of disks and the specific configuration used."

With this in mind, I started to migrate data from striped #zpool to #Raidz1

There was around 10TB of data to move. But after moving all that data, it took around 20TB on a two-drive raidz1. Some #BlackMagicFuckery

#zfs #nas #homelab

Started #zpool shinannigans. I'm switching from RAIDZ1 to Stripe storage type and want to remove two old, smaller drives. At the end, it should be one of those:

1. Same storage size, less power consumption, colder NAS, faster storage, and two empty drive bays.

2. Lost data, fire, and explosions.

#homelab #NAS #DYNAS #zfs #RAID1 #Raidz1 #storage

Started #zpool shinannigans. I'm switching from RAIDZ1 to Stripe storage type and want to remove two old, smaller drives. At the end, it should be one of those:

1. Same storage size, less power consumption, colder NAS, faster storage, and two empty drive bays.

2. Lost data, fire, and explosions.

#homelab #NAS #DYNAS #zfs #RAID1 #Raidz1 #storage

This is a success, I suppose =)
#zpool #zfs #homelab #Proxmox

This is a success, I suppose =)
#zpool #zfs #homelab #Proxmox

@LordCaramac
You can exercise your #zpool / #zfs statements by building a small experimental zpool using files as vdevs instead of physical devices.

https://openzfs.github.io/openzfs-docs/man/master/7/zpoolconcepts.7.html

@LordCaramac
You can exercise your #zpool / #zfs statements by building a small experimental zpool using files as vdevs instead of physical devices.

https://openzfs.github.io/openzfs-docs/man/master/7/zpoolconcepts.7.html

I wish to thank all the people that gave me recommendations for this new adventure of mine. I just created by first #zpool and #zfs dataset, and I'm copying over all the data I have on my “classic” mdadm RAID. After I'm done with the copy, I'll swap the relative place of the ZFS disks and RAID disks, and make the ZFS pool the primary.

I wish to thank all the people that gave me recommendations for this new adventure of mine. I just created by first #zpool and #zfs dataset, and I'm copying over all the data I have on my “classic” mdadm RAID. After I'm done with the copy, I'll swap the relative place of the ZFS disks and RAID disks, and make the ZFS pool the primary.

Pictured: Kubuntu shutting down gracefully – without forcing off the computer – following an insane zpool-scrub(8) command.

For the insanity:

https://github.com/openzfs/zfs/issues/17527

― Gracefully reject an attempt to scrub a read-only pool

#Kubuntu #Ubuntu #Debian #ZFS #OpenZFS #zpool #scrub

Pictured: Kubuntu shutting down gracefully – without forcing off the computer – following an insane zpool-scrub(8) command.

For the insanity:

https://github.com/openzfs/zfs/issues/17527

― Gracefully reject an attempt to scrub a read-only pool

#Kubuntu #Ubuntu #Debian #ZFS #OpenZFS #zpool #scrub

New 𝗙𝗮𝗶𝗹𝗲𝗱 𝗕𝗮𝗰𝗸𝘂𝗽 𝗦𝗲𝗿𝘃𝗲𝗿 𝗕𝘂𝗶𝗹𝗱 [Failed Backup Server Build] article on my https://vermaden.wordpress.com/ blog.

https://vermaden.wordpress.com/2025/05/28/failed-backup-server-build/

#backup #data #freebsd #hardware #nvme #server #small #ssd #storage #tiny #unix #zfs #zpool

New 𝗙𝗮𝗶𝗹𝗲𝗱 𝗕𝗮𝗰𝗸𝘂𝗽 𝗦𝗲𝗿𝘃𝗲𝗿 𝗕𝘂𝗶𝗹𝗱 [Failed Backup Server Build] article on my https://vermaden.wordpress.com/ blog.

https://vermaden.wordpress.com/2025/05/28/failed-backup-server-build/

#backup #data #freebsd #hardware #nvme #server #small #ssd #storage #tiny #unix #zfs #zpool

First time trying to expand a ZFS raidz2...

What am I missing? Forest + trees problem?

I thought it might be a requirement to escape the colons in the device name but I've been backwards and forwards of escaping and quoting to no effect.

For giggles tried adding a 'single' vdev and then 'zpool attach' but it doesn't work.

I was initially following @vermaden tutorial at https://freebsdfoundation.org/blog/openzfs-raid-z-expansion-a-new-era-in-storage-flexibility/ but working on a live system with physical devices and without a net. Ha.

"Linux" things?

Debian Bookwork, Linux 6.12.12+bpo-amd64, zfs 2.3.1. Very vanilla other than the backport kernel.

#Linux #ZFS #draid2 #raidz2 #zpool

First time trying to expand a ZFS raidz2...

What am I missing? Forest + trees problem?

I thought it might be a requirement to escape the colons in the device name but I've been backwards and forwards of escaping and quoting to no effect.

For giggles tried adding a 'single' vdev and then 'zpool attach' but it doesn't work.

I was initially following @vermaden tutorial at https://freebsdfoundation.org/blog/openzfs-raid-z-expansion-a-new-era-in-storage-flexibility/ but working on a live system with physical devices and without a net. Ha.

"Linux" things?

Debian Bookwork, Linux 6.12.12+bpo-amd64, zfs 2.3.1. Very vanilla other than the backport kernel.

#Linux #ZFS #draid2 #raidz2 #zpool

Heute beim Plattentausch festgestellt, dass ich damals beim erstellen des #Backup #Zpool den Fehler gemacht habe, keinen Spiegel erstellt zu haben, sondern nur einen Pool aus zwei Platten 😱

@katnjiapus
I don't know about #BTRFS, but #zfs allows you to take frequent snapshots of the z-filesystems in a pool and send them (incrementally) to a backup pool,and access files there.
Also, if the #zpool is intact you can easily find earlier versions of files in snapshots.
Snapshots don't take significant space.

@katnjiapus
I don't know about #BTRFS, but #zfs allows you to take frequent snapshots of the z-filesystems in a pool and send them (incrementally) to a backup pool,and access files there.
Also, if the #zpool is intact you can easily find earlier versions of files in snapshots.
Snapshots don't take significant space.

How can one check what errors there are before doing a zpool clear? I am concerned what the consequences may be (data corruption? Loss?) if I just put a disconnected device back in my pool without knowing what the errors in question were... #zfs #sysadmin #linux #zpool

everything looking good, though!

#proxmox offline'd the device for me, but i went ahead and did zpool offline wings oldhddid just in case, took out the old drive, inserted the new drive, and did zpool replace wings oldhddid newhddid and it's already resilvering!

#zpool #zfs

everything looking good, though!

#proxmox offline'd the device for me, but i went ahead and did zpool offline wings oldhddid just in case, took out the old drive, inserted the new drive, and did zpool replace wings oldhddid newhddid and it's already resilvering!

#zpool #zfs

@Mossop @gabrielesvelto check the speed of writes #glances also tell you which process is doing IO ops (a column) and the speed per disk (left side) #zpool iostat -v will give you details on I/O combined and per device in the pool. Then you can test also speed of the disks individually (depending on how you set up the pool of course) and find the slower disk, because all nodes in the pool will go at the speed of the slowest

@Mossop @gabrielesvelto check the speed of writes #glances also tell you which process is doing IO ops (a column) and the speed per disk (left side) #zpool iostat -v will give you details on I/O combined and per device in the pool. Then you can test also speed of the disks individually (depending on how you set up the pool of course) and find the slower disk, because all nodes in the pool will go at the speed of the slowest