April 13, 20242 yr Hi, ~20 hours ago power disconnected from my unraid machine. When booting up again, as expected, the system started a parity check, which is still running. I was not particularly concerned with data validity as most of the times my disks are spun down, and only the cache is being written. Though, I just noticed something pretty bad: all the files created in the past 8 months or so, seem to be lost, unless for some miracle they will reappear when the parity check ends. This behavior is different from anything I've experienced in the past. Another thing I'm noticing is that one of the disk is showing "no file system" and is not being mounted. But, on the other hand, that disk seem to be being used for rebuilding parity, thus also wiping my chance of getting my data back through that. Attaching diagnostic files. Please help. pescaflix-diagnostics-20240413-2203.zip Edited April 13, 20242 yr by grana
April 13, 20242 yr Community Expert Handling of drives that unexpectedly go unmountable is covered here in the online documentation accessible via the ‘Manual’ link at the bottom of the GUI or the DOCS link at the top of each forum page.
April 14, 20242 yr Author 7 hours ago, itimpi said: Handling of drives that unexpectedly go unmountable is covered here in the online documentation accessible via the ‘Manual’ link at the bottom of the GUI or the DOCS link at the top of each forum page. The manual says that documentation for ZFS should be added, but it is not
April 14, 20242 yr Community Expert 1 hour ago, grana said: The manual says that documentation for ZFS should be added, but it is not Sorry - missed the fact that it was ZFS. Not sure of the steps to handle this on ZFS I am afraid, hopefully someone else can provide some guidance. In the worst case I would expect something like UFS Explorer on Windows would be able to get most/all of the data.
April 14, 20242 yr Author thanks, appreciate your help. Sorry for not pointing out the device is/was zfs.
April 14, 20242 yr Author zpool import pool: cache id: 15828626886734704336 state: ONLINE action: The pool can be imported using its name or numeric identifier. config: cache ONLINE sdb1 ONLINE pool: disk3 id: 2087549526651695302 state: ONLINE action: The pool can be imported using its name or numeric identifier. config: disk3 ONLINE md3p1 ONLINE pool: disk2 id: 11012034467400980073 state: ONLINE action: The pool can be imported using its name or numeric identifier. config: disk2 ONLINE md2p1 ONLINE pool: disk1 id: 4272399308488201852 state: ONLINE action: The pool can be imported using its name or numeric identifier. config: disk1 ONLINE md1p1 ONLINE this is after starting the array in maintenance mode. With the array stopped, only cache entry is shown.
April 14, 20242 yr Community Expert 11 minutes ago, grana said: With the array stopped, only cache entry is shown. That's because you are using encryption, start the array in normal mode, post new diags and that output again.
April 14, 20242 yr Author with the array started in normal mode (non maintenance): zpool import pool: disk3 id: 2087549526651695302 state: ONLINE action: The pool can be imported using its name or numeric identifier. config: disk3 ONLINE md3p1 ONLINE also attaching new diags. Thanks pescaflix-diagnostics-20240414-1354.zip
April 14, 20242 yr Community Expert Pool reports as importable but it's failing to import with an error, post the output of: zpool import disk3
April 14, 20242 yr Author zpool import disk3 cannot import 'disk3': insufficient replicas Destroy and re-create the pool from a backup source. and zdb -U /data/zfs/zpool.cache -eCC disk3 Configuration for import: vdev_children: 1 version: 5000 pool_guid: 2087549526651695302 name: 'disk3' state: 0 vdev_tree: type: 'root' id: 0 guid: 2087549526651695302 children[0]: type: 'disk' id: 0 guid: 18181126314476381217 whole_disk: 0 metaslab_array: 256 metaslab_shift: 34 ashift: 12 asize: 14000497885184 is_log: 0 create_txg: 4 expansion_time: 1712610252 path: '/dev/mapper/md3p1' devid: 'dm-uuid-CRYPT-LUKS2-291a6f7d67b049978cdfc4ef46119047-md3p1' phys_path: '/dev/disk/by-uuid/2087549526651695302' load-policy: load-request-txg: 18446744073709551615 load-rewind-policy: 2 MOS Configuration: version: 5000 name: 'disk3' state: 0 txg: 1278326 pool_guid: 2087549526651695302 errata: 0 hostname: 'pescaflix' com.delphix:has_per_vdev_zaps vdev_children: 1 vdev_tree: type: 'root' id: 0 guid: 2087549526651695302 create_txg: 4 children[0]: type: 'disk' id: 0 guid: 18181126314476381217 path: '/dev/mapper/md3p1' whole_disk: 0 metaslab_array: 256 metaslab_shift: 34 ashift: 12 asize: 14000497885184 is_log: 0 create_txg: 4 expansion_time: 1712610252 com.delphix:vdev_zap_leaf: 129 com.delphix:vdev_zap_top: 130 features_for_read: com.delphix:hole_birth com.delphix:embedded_data
April 14, 20242 yr Community Expert I think that most likely you will need to restore that pool from a backup, but try these first: zpool import -F disk3 and if still fails zpool import -FX disk3 If both fail restore from a backup, if there's no backup, you can try a file recovery app, like UFS explorer.
April 15, 20242 yr Author and the output is cannot import 'disk3': one or more devices is currently unavailable which I guess is not good news. I'll give a final try with UFS Explorer.
April 15, 20242 yr Author argh, ufs is not from command line, needs a screen. Is there any way to use VNC or something to emulate a screen and connect to it from my laptop?
April 15, 20242 yr Community Expert I don't know, never needed to use it myself, but I believe most users run it in Windows, with the disk connected there.
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