This week for the first time I toyed with OpenZFS on a USB device: a mobile hard disk drive connected to the dock of an HP EliteBook 8570p. A light test, with the pool imported but not writing to the dataset at suspend time. At resume time (22:31), the device was still physically connected but the pool suffered an I/O failure (and the keyboard and trackball on USB were unusable). Sep 3 22:31:03 momh167-gjp4-8570p ZFS[11239]: vdev state changed, pool_guid=$8076233369858608335 vdev_guid=$13893535540375859253 Sep 3 22:31:03 momh167-gjp4-8570p ZFS[11243]: pool I/O failure, zpool=$Transcend error=$28 Sep 3 22:31:03 momh167-gjp4-8570p ZFS[11247]: pool I/O failure, zpool=$Transcend error=$28 Sep 3 22:31:03 momh167-gjp4-8570p ZFS[11251]: pool I/O failure, zpool=$Transcend error=$28 Sep 3 22:31:03 momh167-gjp4-8570p ZFS[11255]: pool I/O failure, zpool=$Transcend error=$28 Sep 3 22:31:03 momh167-gjp4-8570p ZFS[11259]: catastrophic pool I/O failure, zpool=$Transcend I cleared pool errors (after which the keyboard and trackball became usable), exported the pool, physically disconnected the drive, restarted the OS, reconnected, imported and – luckily – cleared the remaining metadata errors through a scrub. Please, might something be done to improve suspend/resume reliability with storage on USB? Might I/O failures be less likely if I connect the drive to the notebook instead of its dock? TIA ---- More from /var/log/messages at https://pastebin.com/CqRYbFZm Other relevant info below. root_at_momh167-gjp4-8570p:~ # date ; uptime ; uname -v Thu Sep 3 22:45:07 BST 2020 10:45PM up 6 mins, 6 users, load averages: 0.20, 0.27, 0.13 FreeBSD 13.0-CURRENT #63 r364768: Tue Aug 25 20:08:23 BST 2020 root_at_momh167-gjp4-8570p:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG root_at_momh167-gjp4-8570p:~ # zpool status -v pool: copperbowl 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 repaired 0B in 01:39:31 with 0 errors on Thu Sep 3 01:12:21 2020 config: NAME STATE READ WRITE CKSUM copperbowl ONLINE 0 0 0 ada0p4.eli ONLINE 0 0 0 errors: No known data errors root_at_momh167-gjp4-8570p:~ # zpool import Transcend && zfs load-key Transcend/VirtualBox Enter passphrase for 'Transcend/VirtualBox': root_at_momh167-gjp4-8570p:~ # zpool status -v Transcend pool: Transcend state: ONLINE status: One or more devices has experienced an error resulting in data corruption. Applications may be affected. action: Restore the file in question if possible. Otherwise restore the entire pool from backup. see: https://zfsonlinux.org/msg/ZFS-8000-8A scan: scrub repaired 0B in 00:15:33 with 0 errors on Wed Sep 2 22:38:56 2020 config: NAME STATE READ WRITE CKSUM Transcend ONLINE 0 0 0 da0p1 ONLINE 0 0 0 errors: Permanent errors have been detected in the following files: <metadata>:<0x0> <metadata>:<0x3d> root_at_momh167-gjp4-8570p:~ # zpool scrub Transcend root_at_momh167-gjp4-8570p:~ # zfs version zfs-0.8.0-1 zfs-kmod-0.8.0-1 root_at_momh167-gjp4-8570p:~ # zpool status -v Transcend pool: Transcend state: ONLINE scan: scrub repaired 0B in 00:17:53 with 0 errors on Thu Sep 3 23:03:57 2020 config: NAME STATE READ WRITE CKSUM Transcend ONLINE 0 0 0 da0p1 ONLINE 0 0 0 errors: No known data errors root_at_momh167-gjp4-8570p:~ # zfs get compression,compressratio,encryption,used,referenced,mountpoint Transcend Transcend/VirtualBox NAME PROPERTY VALUE SOURCE Transcend compression zstd local Transcend compressratio 1.70x - Transcend encryption off default Transcend used 76.4G - Transcend referenced 76.4G - Transcend mountpoint /Volumes/t500 local Transcend/VirtualBox compression zstd inherited from Transcend Transcend/VirtualBox compressratio 1.00x - Transcend/VirtualBox encryption aes-256-gcm - Transcend/VirtualBox used 200K - Transcend/VirtualBox referenced 200K - Transcend/VirtualBox mountpoint /Volumes/t500/VirtualBox inherited from Transcend root_at_momh167-gjp4-8570p:~ # ls -hl /Volumes/t500/VirtualBox/Windows/Windows.vdi -rw------- 1 grahamperrin grahamperrin 69G Sep 3 16:58 /Volumes/t500/VirtualBox/Windows/Windows.vdi root_at_momh167-gjp4-8570p:~ # du -hs /Volumes/t500/VirtualBox/Windows/Windows.vdi 36G /Volumes/t500/VirtualBox/Windows/Windows.vdi root_at_momh167-gjp4-8570p:~ #Received on Thu Sep 03 2020 - 21:42:05 UTC
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