- #Debian openzfs 2.0 how to#
- #Debian openzfs 2.0 update#
- #Debian openzfs 2.0 manual#
- #Debian openzfs 2.0 upgrade#
- #Debian openzfs 2.0 iso#
#Debian openzfs 2.0 iso#
What did you do to recover? or does this not really happen? One of the tools I need to use to recover a broken system (virtual or actual system), is an arch-chroot allowing me to boot via USB/CD-ROM iso (acutal or virtual), and mount the corrupted filesystem via chroot, and then reinstall a new kernel, a newer or older zfs-dkms package, or regenerate the initramfs. When updating kernels, I'm wondering if Ubuntu users using ZFS have seen some systems failing to boot because of a bad initramfs generation. Although I've never used zfs within Ubuntu, I'm guessing? Ubuntu uses a similar approach since this post mentions zfs-dkms.
#Debian openzfs 2.0 upgrade#
With arch, ZFS isn't in the mainline kernel so it needs to be added during kernel upgrade via dkms (or use a kernel specifically precompiled with zfs modules). ZFS is pretty reliable until it isnt - meaning the problems I've mostly encountered during zfs are during kernel upgrades when a utility such as zfs-dkms is broken, or the initramd isn't generated properly. How does Ubuntu's snapshot management tool differ? Does it not delete old snapshots? Does it have option to boot to old/most recent snapshot/clone automatically? I'm not aware of any of these solutions making it possible to boot to snapshot or clone automatically. I'm aware there are other options for snapshot management such as sanoid/syncoid. I'm currently using a product known as znapzend that auto manages creation/deletion of snapshots and sending to remote server. I currently use some Arch systems with zfs-dkms. So I'm just trying to get a feel how ZFS is managed from the Ubuntu side. Last edited by lammert-nijhof October 17th, 2021 at 06:54 PM.
#Debian openzfs 2.0 update#
UPDATE SUNDAY: I did run scrub for all my datapools and there are no problems, the filesystems are fine. So I'm absolutely sure on the 10th of October everything was fine no hw errors no file system corruption and no bitrot. Ubuntu starts it by default the 2nd Sunday of the month and you can check the results by "zpool status". The last time my system did it, has been on Sunday morning the 10th of October at 0:00 and no errors were detected. Note that "zpool scrub" reads all directories and all files and compares the stored checksums (fletcher 4) of the files and directories with the re-calculated checksums after the read. Fortunately in case of issues I have 12 weeks of snapshots on my backup To be absolutely sure, tonight I will run "zpool scrub" again for all my 3 datapools and that takes hours. Today I did run my weekly backup again and then all changes to all 3 datapools are send to my 2 backups and there was no error reported. I detected no issues with ZFS not in 21.04 nor in 21.10, only once I had one scrub error on my laptop, corrected automatically by OpenZFS 2.0.2 (Ubuntu 21.04). Of course all those combinations should work, but sticking to official Ubuntu releases is far more secure
In the comments often you see the people trying out different versions of zfs-dkms, some work with that kernel and others not. I have the impression, that combinations of kernel releases and ZFS releases were used, that were not used and tested in Ubuntu.
#Debian openzfs 2.0 manual#
Reading those bug report's comments I often see: encryption and manual updates of ZFS from Github. I have updated to 21.10 this week from 21.04, but reading the 9 months long list of comments on the bug report, Ubuntu 21.04 had the same type of problem. The first bug report is from January about "zfs-dkms 0.8.4-1ubuntu16", which means Ubuntu 20.04 or 20.10 in the time of ZFS on Linux (ZoL), thus before OpenZFS. Well the error seems to be present in all releases and not only in 21.10. I did already upgrade on the 13th of October not a Friday fortunately
ZFS: Loaded module v0.6.5.3-1, ZFS pool version 5000, ZFS filesystem version 5Īlternative one : cat /sys/module/zfs/versionįilename: /lib/modules/3.10.0-957.1.3.el7.x86_64/extra/zfs.ko.DON"T PANIC, but to be absolutely sure, postpone the upgrade to 21.10 with some weeks. Kernel command line: BOOT_IMAGE=/ROOT/ /boot/vmlinuz-4.2.6-1-pve root=ZFS=/ROOT/pve-1 ro boot=zfs root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet Command line: BOOT_IMAGE=/ROOT/ /boot/vmlinuz-4.2.6-1-pve root=ZFS=/ROOT/pve-1 ro boot=zfs root=ZFS=rpool/ROOT/pve-1 boot=zfs quiet # if nothing, then perhaps it was not loaded (?) A “hacky” way is checking dmesg during module load but I’m sure an easier solution must exist.
#Debian openzfs 2.0 how to#
I’m so hooked on Centos lately I have no clue how to find the version of ZFS installed on a proxmox (debian based) OS.
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