Also to note, not all the datasets I created in rpool/USERDATA were
destroyed:
oot@mesozoic:/# zfs list | grep USERDATA
rpool/USERDATA
338G 1.41T 96K /
rpool/USERDATA/atm26_tavly8
32.6G 1.41T 29.9G /home/atm26
rpool/USERDATA/root_tavly8
920K 1.41T 592K /root
rpool/USERDATA/ssd250
305G 1.41T 88K /local/ssd250
rpool/USERDATA/ssd250/build
55.3G 1.41T 112K /local/ssd250/build
rpool/USERDATA/ssd250/build/lineageos
53.1G 1.41T 52.9G
/local/ssd250/build/lineageos
rpool/USERDATA/ssd250/build/riscos
2.17G 1.41T 2.17G
/local/ssd250/build/riscos
rpool/USERDATA/ssd250/docker
746M 1.41T 746M /local/ssd250/docker
rpool/USERDATA/ssd250/dvd
458M 1.41T 458M /local/ssd250/dvd
rpool/USERDATA/ssd250/vm
249G 1.41T 88K /local/ssd250/vm
rpool/USERDATA/ssd250/vm/ecadlabs
152K 1.41T 88K /local/ssd250/vm/ecadlabs
rpool/USERDATA/ssd250/vm/jenkins
240G 1.41T 240G /local/ssd250/vm/jenkins
rpool/USERDATA/ssd250/vm/uvtool
8.74G 1.41T 8.74G
/local/ssd250new/vm/uvtool
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to zfs-linux in Ubuntu.
https://bugs.launchpad.net/bugs/1883887
Title:
Focal installer destroyed my datasets
Status in zfs-linux package in Ubuntu:
New
Bug description:
I installed focal about a month about, using the desktop installer
with the 'experimental' ZFS root option. I've been running ZFS on
FreeBSD for about 10 years and figured I could handle any sharp edges.
It's installed to a single 2TB SSD - no RAID, no L2ARC/ZIL, no dedup,
nothing complicated. Machine is an Intel S2600CP2, 2x E5-2670 v1,
128GiB RAM.
The machine stayed up for a few weeks, until I had cause to physically
move it and so shut it down. It turned out GRUB had installed onto
the wrong disk which I'd removed in the intervening time. It wouldn't
boot, so I booted the focal desktop installer from a USB stick to give
me a shell to fix things. I didn't run the actual installer, I just
booted to the installer desktop and then did Ctrl-Alt-F1, apt install
openssh-server, and then logged in via SSH.
Then I followed some instructions about mounting the pool in a chroot (Step
3):
https://askubuntu.com/questions/826209/re-initialise-grub-for-non-bootable-uefi-zfs-16-04-installation
This took a couple of goes to get right as the first time I tried to mount on
top of the installer (without zpool import -R) and many filesystems couldn't
replace preexisting mounts, so I exported and re-imported. Anyway, I succeeded
in mounting, and then doing update-grub. However, looking at the zpool history
-il log while I was in the installer I see:
(full zpool history -il log attached)
2020-06-16.14:56:34 [txg:889337] open pool version 5000; software version
unknown; uts ubuntu 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC
2020 x86_64 [on ubuntu]
2020-06-16.14:56:34 [txg:889339] import pool version 5000; software version
unknown; uts ubuntu 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC
2020 x86_64 [on ubuntu]
2020-06-16.14:58:20 zpool export rpool bpool [user 0 (root) on ubuntu:linux]
2020-06-16.14:59:16 [txg:889372] open pool version 5000; software version
unknown; uts ubuntu 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC
2020 x86_64 [on ubuntu]
2020-06-16.14:59:16 [txg:889374] import pool version 5000; software version
unknown; uts ubuntu 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC
2020 x86_64 [on ubuntu]
2020-06-16.15:01:32 [txg:889402] destroy
rpool/ROOT/ubuntu_rjlt3b/var/log@autozsys_1gwqtf (19222) [on ubuntu]
2020-06-16.15:01:32 ioctl destroy_snaps
input:
snaps:
rpool/ROOT/ubuntu_rjlt3b/var/log@autozsys_1gwqtf
[user 0 (root) on ubuntu:linux]
...lots of snapshots are deleted...
2020-06-16.15:05:55 [txg:889577] destroy
rpool/USERDATA/root_tavly8@autozsys_1gwqtf (19722) [on ubuntu]
2020-06-16.15:06:00 ioctl destroy_snaps
input:
snaps:
rpool/USERDATA/root_tavly8@autozsys_1gwqtf
2020-06-16.15:06:45 [txg:889588] destroy rpool/USERDATA/local/vm/freebsd-12.1
(3398) [on ubuntu]
2020-06-16.15:06:45 [txg:889590] destroy rpool/USERDATA/local/vm (735) [on
ubuntu]
2020-06-16.15:06:46 [txg:889592] destroy rpool/USERDATA/local/ecad/altera
(551) [on ubuntu]
2020-06-16.15:06:46 [txg:889594] destroy rpool/USERDATA/local/ecad/xilinx
(3476) [on ubuntu]
2020-06-16.15:06:47 [txg:889596] destroy rpool/USERDATA/local/ecad (127) [on
ubuntu]
2020-06-16.15:06:48 [txg:889598] destroy rpool/USERDATA/local/scratch/atm26
(2058) [on ubuntu]
2020-06-16.15:06:48 [txg:889600] destroy rpool/USERDATA/local/scratch (2447)
[on ubuntu]
2020-06-16.15:06:49 [txg:889602] destroy rpool/USERDATA/local (1671) [on
ubuntu]
2020-06-16.15:07:20 [txg:889668] destroy rpool/USERDATA/opt_tavly8/riscv
(1878) [on ubuntu]
2020-06-16.15:07:21 [txg:889670] destroy rpool/USERDATA/opt_tavly8/brave.com
(1864) [on ubuntu]
2020-06-16.15:07:23 [txg:889672] destroy rpool/USERDATA/opt_tavly8/riscv-llvm
(4788) [on ubuntu]
2020-06-16.15:07:24 [txg:889674] destroy
rpool/USERDATA/opt_tavly8/riscv-freebsd (5147) [on ubuntu]
2020-06-16.15:07:25 [txg:889676] destroy rpool/USERDATA/opt_tavly8 (3313)
[on ubuntu]
Here something that wasn't the command line - and so I assume is zsys
- deleted all the datasets I made in rpool/USERDATA. This was about
1TiB of data.
Needless to say, nothing should be destroying user datasets.
root@mesozoic:/# lsb_release -rd
Description: Ubuntu 20.04 LTS
Release: 20.04
root@mesozoic:/# apt-cache policy zsys
zsys:
Installed: 0.4.5
Candidate: 0.4.5
Version table:
*** 0.4.5 500
500 http://ubuntu.mirrors.uk2.net/ubuntu focal/main amd64 Packages
100 /var/lib/dpkg/status
root@mesozoic:/# dpkg --list | grep zfs
ii libzfs2linux 0.8.3-1ubuntu12
amd64 OpenZFS filesystem library for Linux
ii zfs-initramfs 0.8.3-1ubuntu12
amd64 OpenZFS root filesystem capabilities for Linux -
initramfs
ii zfs-zed 0.8.3-1ubuntu12
amd64 OpenZFS Event Daemon
ii zfsutils-linux 0.8.3-1ubuntu12
amd64 command-line tools to manage OpenZFS filesystems
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