[Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
(A bit delayed, but just for anyone finding this...) No, you cannot remove a FAULTED normal data device - device_removal involves migrating all the data off the old one, which you cannot do if it's not there. (logs and caches are different.) You'll need to recreate the pool. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
hi, Dose new ZFS allow just removeing FAULTED device, so I have old clean disk alone, scrub that,... then REPARTITIONING FAULTED device ( i had incorrect size, there is boot area also ), and then attach FAULTED DEVICE AS NEW MIRROR DISK as it was intented ??? zfs remove old-rpool -d faulted zfs scrub zfs add old-rpool old new |???| |Then I do not have to copy anyyhing ??? | || joni Richard Laager kirjoitti 3.12.2020 klo 23.29: > device_removal only works if you can import the pool normally. That is > what you should have used after you accidentally added the second disk > as another top-level vdev. Whatever you have done in the interim, > though, has resulted in the second device showing as FAULTED. Unless you > can fix that, device_removal is not an option. I had hoped that you just > had the second drive unplugged or something. But since the import is > showing "corrupted data" for the second drive, that's probably not what > happened. > > This works for me on Ubuntu 20.04: > echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds > > That setting does not exist on Ubuntu 18.04 (which you are running), so > I get the same "Permission denied" error (because bash is trying to > create that file, which you cannot do). > > I now see this is an rpool. Is your plan to reinstall? With 18.04 or > 20.04? > > If 18.04, then: > 1. Download the 20.04.1 live image. Write it to a USB disk and boot into that. > 2. In the live environment, install the ZFS tools: sudo apt install > zfsutils-linux > 3. echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds > 4. mkdir /old > 5. Import the old pool renaming it to rpool-old and mount filesystems: > zpool import -o readonly=on -N -R /old rpool rpool-old > zfs mount rpool-old/ROOT/ubuntu > zfs mount -a > 6. Confirm you can access your data. Take another backup, if desired. If you > don't have space to back it up besides the new/second disk, then read on... > 7. Follow the 18.04 Root-on-ZFS HOWTO using (only) the second disk. Be very > careful not to partition or zpool create the disk with your data!!! For > example, partition the second disk for the mirror scenario. But obviously you > can't do zpool create with "mirror" because you have only one disk. > 8. Once the new system is installed (i.e. after step 6.2), but before > rebooting, copy data from /old to /mnt as needed. > 9. Shut down. Disconnect the old disk. Boot up again. > 9. Continue the install as normal. > 10. When you are certain that everything is good and that new disk is working > properly (maybe do a scrub) and you have all your data, then you can connect > the old disk and do the zpool attach (ATTACH, not add) to attach the old disk > to the new pool as a mirror > > If 20.04, then I'd do this instead: > 1. Unplug the disk with your data. > 2. Follow the 20.04 Root-on-ZFS HOWTO using only the second disk. Follow the > steps as if you were mirroring (since that is the ultimate goal) where > possible. For example, partition the second disk for the mirror scenario. But > obviously you can't do zpool create with "mirror" because you have only one > disk. > 3. Once the new, 20.04 system is working on the second disk and booting > normally, connect the other, old drive. (This assumes you can connect it > while the system is running.) > 4. echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds > 5. Import the old pool using its GUID renaming it to rpool-old and mount > filesystems: > zpool import -o readonly -N -R /mnt 5077426391014001687 rpool-old > zfs mount rpool-old/ROOT/ubuntu > zfs mount -a > 6. Copy over data. > 7. zpool export rpool-old > 8. When you are certain that everything is good and that new disk is working > properly (maybe do a scrub) and you have all your data, then you can do the > zpool attach (ATTACH, not add) to attach the old disk to the new pool as a > mirror. > -- joni -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
device_removal only works if you can import the pool normally. That is what you should have used after you accidentally added the second disk as another top-level vdev. Whatever you have done in the interim, though, has resulted in the second device showing as FAULTED. Unless you can fix that, device_removal is not an option. I had hoped that you just had the second drive unplugged or something. But since the import is showing "corrupted data" for the second drive, that's probably not what happened. This works for me on Ubuntu 20.04: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds That setting does not exist on Ubuntu 18.04 (which you are running), so I get the same "Permission denied" error (because bash is trying to create that file, which you cannot do). I now see this is an rpool. Is your plan to reinstall? With 18.04 or 20.04? If 18.04, then: 1. Download the 20.04.1 live image. Write it to a USB disk and boot into that. 2. In the live environment, install the ZFS tools: sudo apt install zfsutils-linux 3. echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds 4. mkdir /old 5. Import the old pool renaming it to rpool-old and mount filesystems: zpool import -o readonly=on -N -R /old rpool rpool-old zfs mount rpool-old/ROOT/ubuntu zfs mount -a 6. Confirm you can access your data. Take another backup, if desired. If you don't have space to back it up besides the new/second disk, then read on... 7. Follow the 18.04 Root-on-ZFS HOWTO using (only) the second disk. Be very careful not to partition or zpool create the disk with your data!!! For example, partition the second disk for the mirror scenario. But obviously you can't do zpool create with "mirror" because you have only one disk. 8. Once the new system is installed (i.e. after step 6.2), but before rebooting, copy data from /old to /mnt as needed. 9. Shut down. Disconnect the old disk. Boot up again. 9. Continue the install as normal. 10. When you are certain that everything is good and that new disk is working properly (maybe do a scrub) and you have all your data, then you can connect the old disk and do the zpool attach (ATTACH, not add) to attach the old disk to the new pool as a mirror If 20.04, then I'd do this instead: 1. Unplug the disk with your data. 2. Follow the 20.04 Root-on-ZFS HOWTO using only the second disk. Follow the steps as if you were mirroring (since that is the ultimate goal) where possible. For example, partition the second disk for the mirror scenario. But obviously you can't do zpool create with "mirror" because you have only one disk. 3. Once the new, 20.04 system is working on the second disk and booting normally, connect the other, old drive. (This assumes you can connect it while the system is running.) 4. echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds 5. Import the old pool using its GUID renaming it to rpool-old and mount filesystems: zpool import -o readonly -N -R /mnt 5077426391014001687 rpool-old zfs mount rpool-old/ROOT/ubuntu zfs mount -a 6. Copy over data. 7. zpool export rpool-old 8. When you are certain that everything is good and that new disk is working properly (maybe do a scrub) and you have all your data, then you can do the zpool attach (ATTACH, not add) to attach the old disk to the new pool as a mirror. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
Do you mean this feature which is comi ng,... when ? https://github.com/openzfs/openzfs/pull/251 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
root@jonipekka-desktop:~# zpool import pool: rpool id: 5077426391014001687 state: UNAVAIL status: One or more devices are faulted. action: The pool cannot be imported due to damaged devices or data. config: rpoolUNAVAIL insufficient replicas ata-WDC_WD4005FZBX-00K5WB0_V6GAE1PR-part1 ONLINE ata-WDC_WD4005FZBX-00K5WB0_VBGDM25F-part4 FAULTED corrupted data root@jonipekka-desktop:~# -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
new device_removal feature ,... where it is ? It might work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
I tried remove command before taking it out, i was in beleaf system will then correct problem, So basically secon disk has no data and not corrupted,... I need that option due import readonly -f pool -d dose not fix problem so i can then copy disk. I have only essential's at backup ,... so there is many files i realy need,... joni Richard Laager kirjoitti 3.12.2020 klo 18.38: > Why is the second disk missing? If you accidentally added it and ended > up with a striped pool, as long as both disks are connected, you can > import the pool normally. Then use the new device_removal feature to > remove the new disk from the pool. > > If you've done something crazy like pulled the disk and wiped it, then > yeah, you're going to need to figure out how to import the pool read- > only. I don't have any advice on that piece. > -- joni -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
Why is the second disk missing? If you accidentally added it and ended up with a striped pool, as long as both disks are connected, you can import the pool normally. Then use the new device_removal feature to remove the new disk from the pool. If you've done something crazy like pulled the disk and wiped it, then yeah, you're going to need to figure out how to import the pool read- only. I don't have any advice on that piece. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1906542] Re: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data
Is there anyone who could help me over go this bug so I can rescue my ZFS pool data, pool will be lost as I understand. I accidentaly added disk to pool and not as mirror what was intention,... and it can nor be removed even there is no data! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906542 Title: echo 1 >> /sys/module/zfs/parameters/zfs_max_missing_tvds says premission error, unable to reapair lost zfs pool data To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1906542/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
