I recently replaced my parity drive with a brand new, larger drive. The old parity drive hadn't missed a beat in the years it spent in that role. So, I performed a pre-clear on it and added it to my array as extra storage. Since doing that, it seems to randomly become unavailable, as in I can't read or write to it, but in Unraid's main tab, it looks to be online. I can even perform a SMART test on it, and it passes. But I can do nothing with the disk until I bounce my server. I've tried replacing the SATA cable, swapping to another SATA controller, etc. But the problem persists. The disk is always readable after a bounce, but then eventually becomes inaccessible, and I have no idea why. Physically, the disk seems fine. In Krusader, the disk (disk9) just becomes a file icon.

In Unraid's main window, after trying to access it, it looks like it's spun up OK:

If I run a SMART test at this point, it passes OK. I've attached my log and am keen to know what to try next.

Thanks all.

unr1-diagnostics-20260119-1153.zip

Jan 19 11:42:21 UNR1 kernel: XFS (md9p1): Corruption detected! Free inode 0x8a not marked free! (mode 0x41ff)
Jan 19 11:42:21 UNR1 kernel: XFS (md9p1): Internal error xfs_trans_cancel at line 978 of file fs/xfs/xfs_trans.c.  Caller xfs_create+0x28e/0x310
Jan 19 11:42:21 UNR1 kernel: CPU: 5 UID: 99 PID: 459364 Comm: KIO::WorkerThre Tainted: P           O       6.12.54-Unraid #1
Jan 19 11:42:21 UNR1 kernel: Tainted: [P]=PROPRIETARY_MODULE, [O]=OOT_MODULE
Jan 19 11:42:21 UNR1 kernel: Hardware name: Micro-Star International Co., Ltd. MS-7D43/PRO B660M-A WIFI DDR4 (MS-7D43), BIOS 1.N1 05/13/2025
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Jan 19 11:42:21 UNR1 kernel: XFS (md9p1): Corruption of in-memory data (0x8) detected at xfs_trans_cancel+0xd1/0x110 (fs/xfs/xfs_trans.c:979).  Shutting down filesystem.
Jan 19 11:42:21 UNR1 kernel: XFS (md9p1): Please unmount the filesystem and rectify the problem(s)

Disk 9 seems to have corruption. Stop the array, put it in maintenance mode, click Disk 9 and run the xfs repair tool. Post the results.

2 hours ago, MowMdown said:

Jan 19 11:42:21 UNR1 kernel: XFS (md9p1): Corruption detected! Free inode 0x8a not marked free! (mode 0x41ff)

Disk 9 seems to have corruption. Stop the array, put it in maintenance mode, click Disk 9 and run the xfs repair tool. Post the results.

Wow! Well spotted. I totally didn't see that. I've followed your advice, put the array in maintenance mode and repaired the file system on disk 9. I've restarted the array successfully and will know in a few hours if things are better. Funny thing is that sometimes it took a few hours for the disk to go offline. When I first installed it, I had a few CRC errors due to a dodgy SATA cable, which I replaced. I suspect that may be why I got some file corruption.

Thank you so much for taking the time to look at my log files. I'm very appreciative of the help. Will report back soon.

Post new diagnostics

3 hours ago, trurl said:

Post new diagnostics

It's all looking good. I think I'm good.

unr1-diagnostics-20260119-1944.zip

10 hours ago, BillR said:

It's all looking good. I think I'm good.

👍