Read-only file system, lots of BTRFS errors


xzxz1188

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Cache2 dropped offline, and your cache pool is not redundant:

Feb 24 14:18:04 Tower kernel: ata3: hard resetting link
Feb 24 14:18:10 Tower kernel: ata3: link is slow to respond, please be patient (ready=0)
Feb 24 14:18:39 Tower kernel: ata3: COMRESET failed (errno=-16)
Feb 24 14:18:39 Tower kernel: ata3: limiting SATA link speed to 3.0 Gbps
Feb 24 14:18:39 Tower kernel: ata3: hard resetting link
Feb 24 14:18:44 Tower kernel: ata3: COMRESET failed (errno=-16)
Feb 24 14:18:44 Tower kernel: ata3: reset failed, giving up
Feb 24 14:18:44 Tower kernel: ata3.00: disabled

Check cables to see if it comes back online and then run a scrub.

 

Also, even if you want to use the data in single profile you should make the metadata raid1, and see here for better pool monitoring.

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Thank you so much! Good news is that I figure out where the problem is, but the bad news... seems the problem is caused by SSD disk itself, not cables. That means I may lose this cache disk. I think I have to accept the lost (files and appdata?) on this disk. What should be my next step? If I change the cache disk, rebuild the cache pool, will it damage my array's existing data? 

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