ZFS-HA pool faulted with metadata corruption
I setup the ZFS-HA following the excellent description Github (see here). After extensive testing, I rolled the setup out to production using 5x12 disks in RAIDZ3 connected to two nodes using HBA...
View ArticleImpossible to make space on full zfs pool
I have this zfs pool which seems to be full because of some reservations# zpool get all data2NAME PROPERTY VALUE SOURCEdata2 size 128T -data2 capacity 68% -data2 free 40.9T -data2 allocated 87.1T -#...
View ArticleHow to get IP details of passive cluster?
I have Sun Oracle ZFS storage ZS7-2 model. It is a 2 node cluster active and passive.Unfortunately I have only active node IP details to login.Can anyone help me on how to get passive node IP details...
View Articlezfs: scrub vs resilver (are they equivalent?)
Is a resilver as good as a scrub? If not, why?Use case: during a scrub checksum errors come up. Instead of continuing with the scrub, stop it, replace drive and resilver. Did the resilver do some/all...
View ArticleZFS on production server don't want to force mount on boot
I use ZFS on production remote gentoo server. All was fine, until my server freezed and I needed to reboot it. It failed with 'device or resource busy' error on mounting rootfs. The simply action need...
View ArticleCannot send snapshot XXX recursively: snapshot dataset/nestedDataset@XXX does...
I performed a snapshot pruning 2 days ago that resulted in some issues on the snapshots. I incurred some light data loss because, I suspect, some snapshots were created as "clone snapshots" and once...
View ArticleZFS pool disappear after reboot
We have a ZFS system installed on Ubuntu 20.04.Apparently, there was an electrical shutdown this week end, and when rebooting, the ZFS pool is no longer there.zpool status -v gives : no pools...
View ArticleIs it possible to change zfs raid-z1 to raid-z2 or raid-z3 on for instance...
I have a running truenas-scale zfs on raid-z1. For safety I though of increasing parity when adding a new disk.Asking the same question as someone asked 10 years ago,is it possible with the current...
View ArticleIs it possible to change zfs raid-z1 to raid-z2 or raid-z3 on freenas?
I have a running freenas zfs on raid-z1. For safety I though of increasing parity. Enough spare space is available.Is it possible to upgrade a zfs raid-z1 to raid-z2 or raid-z3?
View ArticleZFS import unable to find any pools on RockyLinux after Reboot
I had a single ZFS pool comprised of 8 (6/2) drives in a ZFS pool and after my server was down for ~5 days of no power the zpool I had created no longer shows where I mounted it. When I first access...
View ArticleHow can I stop FreeNAS from assigning two disks from different SATA...
I have FreeNAS running in a VM in XCP-NG. I’ve followed the guides and I’ve dedicated a SATA controller to it using PCI-passthrough. FreeNAS correctly discovers its boot disk, which is virtual, and two...
View ArticleWhat are potential dangers of spanning ZFS RAIDZ over uneven disks?
I am redesigning my homelab servers from scratch, and I want to give ZFS a try after some experimentation I've done in a VM.I know there is a limitation - disks in vdevs must all have the same size...
View Articlezfs module not found on centos after restart
After I rebooted a CentOS server, ZFS does not work:$ sudo zfs listThe ZFS modules are not loaded.Try running '/sbin/modprobe zfs' as root to load them.$ sudo modprobe zfsmodprobe: FATAL: Module zfs...
View ArticleWhat are potential dangers of spanning ZFS RAIDZ over different size disks?...
I am redesigning my homelab servers from scratch, and want to try ZFS after experimentation I've done.I know there is a limitation that disks in vdevs must all have the same size, otherwise only the...
View ArticleHow to delete all but last [n] ZFS snapshots?
I'm currently snapshotting my ZFS-based NAS nightly and weekly, a process that has saved my ass a few times. However, while the creation of the snapshot is automatic (from cron), the deletion of old...
View ArticleNeed to identify disk in zpool ... how?
I need to replace a bad disk in a zpool on FreeNAS.zpool status showsgptid/5fe33556-3ff2-11e2-9437-f46d049aaeca UNAVAIL 0 0 0 cannot openHow do I find the serial # of that disk?More:glabel status...
View Articlezfs, possibly bad performance
I am looking to confirm if this behaviour is normal as I got a new server and I am testing some SQL queries and they seem to be slightly slower than on the old machine. This is freebsd 14.1When I copy...
View ArticleCOW filesystems (BTRFS, ZFS, bcachefs) scrubbing and RAID1 with mdadm on Linux
Suppose I create a two disks RAID1 volume with mdadm and then create a BTRFS/ZFS/bcachefs partition on it.Than data on one of the two disks gets corrupted.If I perform a scrub, there's no way for...
View ArticleZFS with different sized disks, for greatest size and redundancu
I currently have 4 hard drives2x 12TB1x 8TB1x 4TBI'm quite new to ZFS, but I'm trying to work out what combination I can use to give me the best greatest amount of space, with the best amount of...
View ArticleSetting up SSH so that FreeNAS can connect to a Mac without a password
I would like to send a ZFS dataset to a Mac running OpenZFS. I have been able to replicate a FreeNAS dataset to a Mac running OpenZFS using the terminal. I did this using SSH password authentication....
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