Thanks for you fast reply, forgot to add a description. I tried you suggested solution. I first had to remove /etc/zfs/zpool.cache in order to be able to do this.
Then I tried your solution 2 times, once with no flags, and then with -f flag. The panic still occurs when doing this. Should I try zdb again? Any other suggestions ? -- 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/1880580 Title: zpool import PANIC at zio.c:266 Status in zfs-linux package in Ubuntu: In Progress Bug description: 3) After a reboot, ZFS pool never stopped trying to import the pool. It was blocking the boot-sequence and I had to rename the /etc/zfs/zpool.cache to another name, in order to boot the system. There was an upgrade made before reboot, but that was not anything with zfs. The problem is that zpool datastore is not possible to import in normal way. Only in readonly=on is I able to import it. Also the Scub seems to be active on the readonly, but it will never stops since it not possible to write to the pool. I cannot stop scrub either since I can only import it at readonly. If I import it at readonly it works and I can access the files. But if import normally a panic occur, and the process hangs. 4) Expected to be able to import the zpool as normal. 1) #lsb_release -rd Description: Ubuntu 18.04.4 LTS Release: 18.04 2) #apt-cache policy zfsutils-linux zfsutils-linux: Installerad: 0.7.5-1ubuntu16.9 Kandidat: 0.7.5-1ubuntu16.9 # dpkg -l | grep -i "zfs" rc libzfs1 0.6.2-1~precise amd64 Native ZFS filesystem library for Linux rc libzfs2 0.6.5.4-1~precise amd64 Native OpenZFS filesystem library for Linux ii libzfs2linux 0.7.5-1ubuntu16.9 amd64 OpenZFS filesystem library for Linux rc libzpool1 0.6.2-1~precise amd64 Native ZFS pool library for Linux rc libzpool2 0.6.5.4-1~precise amd64 Native OpenZFS pool library for Linux ii libzpool2linux 0.7.5-1ubuntu16.9 amd64 OpenZFS pool library for Linux rc ubuntu-zfs 8~precise amd64 Native ZFS filesystem metapackage for Ubuntu. rc zfs-dkms 0.7.5-1ubuntu16.9 all OpenZFS filesystem kernel modules for Linux ii zfs-doc 0.7.5-1ubuntu16.9 all Native OpenZFS filesystem documentation and examples. ii zfs-initramfs 0.7.5-1ubuntu16.9 all OpenZFS root filesystem capabilities for Linux - initramfs ii zfs-zed 0.7.5-1ubuntu16.9 amd64 OpenZFS Event Daemon rc zfsutils 0.6.5.4-1~precise amd64 Native OpenZFS management utilities for Linux ii zfsutils-linux 0.7.5-1ubuntu16.9 amd64 command-line tools to manage OpenZFS filesystems #zpool status no pools available # zpool import pool: datastore id: 3190464655986727485 state: ONLINE status: Some supported features are not enabled on the pool. action: The pool can be imported using its name or numeric identifier, though some features will not be available without an explicit 'zpool upgrade'. config: datastore ONLINE raidz2-0 ONLINE sdb ONLINE sdc ONLINE sdd ONLINE sde ONLINE sdf ONLINE sdg ONLINE # zpool import -o readonly=on datastore # zpool status pool: datastore state: ONLINE status: Some supported features are not enabled on the pool. The pool can still be used, but some features are unavailable. action: Enable all features using 'zpool upgrade'. Once this is done, the pool may no longer be accessible by software that does not support the features. See zpool-features(5) for details. scan: scrub in progress since Sun May 10 00:24:01 2020 15,1T scanned out of 15,1T at 1B/s, (scan is slow, no estimated time) 1,44M repaired, 100,01% done config: NAME STATE READ WRITE CKSUM datastore ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 sdb ONLINE 0 0 0 sdc ONLINE 0 0 0 sdd ONLINE 0 0 0 sde ONLINE 0 0 0 sdf ONLINE 0 0 0 sdg ONLINE 0 0 0 errors: No known data errors If I now tries to import the datastore in normal way, it Panic and hangs. # zpool export datastore # zpool import -F datastore VERIFY3(c < (1ULL << 24) >> 9) failed (36028797018963967 < 32768) PANIC at zio.c:266:zio_buf_alloc() Some output from the logs: May 22 09:22:14 Crichton kernel: [ 44.582834] VERIFY3(c < (1ULL << 24) >> 9) failed (36028797018963967 < 32768) May 22 09:22:14 Crichton kernel: [ 44.582870] PANIC at zio.c:266:zio_buf_alloc() May 22 09:22:14 Crichton kernel: [ 44.582890] Showing stack for process 2180 May 22 09:22:14 Crichton kernel: [ 44.582893] CPU: 4 PID: 2180 Comm: txg_sync Tainted: P IO 4.15.0-101-generic #102-Ubuntu May 22 09:22:14 Crichton kernel: [ 44.582894] Hardware name: Gigabyte Technology Co., Ltd. Z87X-UD4H/Z87X-UD4H-CF, BIOS F7 08/03/2013 May 22 09:22:14 Crichton kernel: [ 44.582895] Call Trace: May 22 09:22:14 Crichton kernel: [ 44.582902] dump_stack+0x6d/0x8e May 22 09:22:14 Crichton kernel: [ 44.582911] spl_dumpstack+0x42/0x50 [spl] May 22 09:22:14 Crichton kernel: [ 44.582915] spl_panic+0xc8/0x110 [spl] May 22 09:22:14 Crichton kernel: [ 44.582919] ? __switch_to_asm+0x41/0x70 May 22 09:22:14 Crichton kernel: [ 44.582921] ? _cond_resched+0x19/0x40 May 22 09:22:14 Crichton kernel: [ 44.582924] ? kmem_cache_alloc+0xab/0x1c0 May 22 09:22:14 Crichton kernel: [ 44.582927] ? spl_kmem_cache_alloc+0x73/0x7a0 [spl] May 22 09:22:14 Crichton kernel: [ 44.582931] ? spl_kmem_cache_alloc+0x73/0x7a0 [spl] May 22 09:22:14 Crichton kernel: [ 44.582934] ? spl_kmem_cache_alloc+0x73/0x7a0 [spl] May 22 09:22:14 Crichton kernel: [ 44.582978] zio_buf_alloc+0x43/0x60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583008] abd_alloc_linear+0x67/0xe0 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583032] abd_alloc+0x391/0x470 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583036] ? spl_kmem_cache_alloc+0x113/0x7a0 [spl] May 22 09:22:14 Crichton kernel: [ 44.583059] arc_hdr_alloc_pabd+0xe7/0xf0 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583083] arc_hdr_alloc+0xb5/0x130 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583106] arc_read+0x219/0xa80 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583129] ? arc_buf_destroy+0x140/0x140 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583158] dsl_scan_prefetch.isra.8+0xb7/0xd0 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583184] dsl_scan_visitbp+0x3c6/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583210] ? dsl_scan_prefetch.isra.8+0xb7/0xd0 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583236] dsl_scan_visitbp+0x7c5/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583260] dsl_scan_visitbp+0x487/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583285] dsl_scan_visitbp+0x487/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583309] dsl_scan_visitbp+0x487/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583333] dsl_scan_visitbp+0x487/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583357] dsl_scan_visitbp+0x487/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583381] dsl_scan_visitbp+0x487/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583404] dsl_scan_visitbp+0x97b/0xd60 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583427] dsl_scan_visitds+0x108/0x540 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583451] dsl_scan_sync+0x2ef/0xc30 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583481] ? zio_wait+0x141/0x1b0 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583509] spa_sync+0x49e/0xd80 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583540] txg_sync_thread+0x2cd/0x4a0 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583542] ? __switch_to_asm+0x35/0x70 May 22 09:22:14 Crichton kernel: [ 44.583570] ? txg_quiesce_thread+0x3d0/0x3d0 [zfs] May 22 09:22:14 Crichton kernel: [ 44.583574] thread_generic_wrapper+0x74/0x90 [spl] May 22 09:22:14 Crichton kernel: [ 44.583577] kthread+0x121/0x140 May 22 09:22:14 Crichton kernel: [ 44.583580] ? __thread_exit+0x20/0x20 [spl] May 22 09:22:14 Crichton kernel: [ 44.583581] ? kthread_create_worker_on_cpu+0x70/0x70 May 22 09:22:14 Crichton kernel: [ 44.583583] ret_from_fork+0x35/0x40 --- I also tried to use zdb to see if it could find any errors. This gets interrupted after a while. # set zfs:zfs_recover=1 # set aok=1 # zdb -e -bcsvL datastore Traversing all blocks to verify checksums ... 2.29T completed ( 144MB/s) estimated time remaining: 25hr 46min 43sec c < (1ULL << 24) >> 9 (0x7fffffffffffff < 0x8000) ASSERT at ../../module/zfs/zio.c:266:zio_buf_alloc()Avbruten (SIGABRT) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1880580/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
