I have a fairy simple setup for my home NAS - 1 FreeNAS server running all the recommended hardware, and a USB external hard disk running ZFS for local replication for backups.
I don't recall having a problem with this in the past, but lately it seems any time my NAS shuts down unexpectedly, the USB disk pool becomes corrupted and I have to manually online the pool. The "corruption" is always similar, which involves metadata and the mountpoint. IE:
/mnt/FreeNAS-Backup is my pool's mountpoint. I don't really know what to make of this. Oracle's doc on the <metadata> things confuses and makes no sense to me:
I guess the two things I'm looking to find an answer for on this thread are:
1. If my mountpoint is corrupt, what does that even mean? I can access all my data still.
2. Why does this always happen to my USB drive and never my SATA pool? I might also note I don't think I experienced this once on FreeNAS 11.2, just on 11.3.
I don't recall having a problem with this in the past, but lately it seems any time my NAS shuts down unexpectedly, the USB disk pool becomes corrupted and I have to manually online the pool. The "corruption" is always similar, which involves metadata and the mountpoint. IE:
Code:
errors: Permanent errors have been detected in the following files: <metadata>:<0x0> <metadata>:<0x1b> /mnt/FreeNAS-Backup/
/mnt/FreeNAS-Backup is my pool's mountpoint. I don't really know what to make of this. Oracle's doc on the <metadata> things confuses and makes no sense to me:
f an object in the metaobject set (MOS) is corrupted, then a special tag of <metadata>, followed by the object number, is displayed.
If the corruption is within a directory or a file's metadata, the only choice is to move the file elsewhere. You can safely move any file or directory to a less convenient location, allowing the original object to be restored in its place.
I guess the two things I'm looking to find an answer for on this thread are:
1. If my mountpoint is corrupt, what does that even mean? I can access all my data still.
2. Why does this always happen to my USB drive and never my SATA pool? I might also note I don't think I experienced this once on FreeNAS 11.2, just on 11.3.