February 17, 20215 yr I am getting write_io_errs, read_io_errs, and flush_io_errs on one of the devices in my cache pool. The pool is raid1, with enough unused space that I can maintain redundancy without the problem drive. I would like to remove the drive with errors. Please confirm that this is the correct procedure. Thanks tower7-diagnostics-20210217-1146-B.zip BTRFS Info.txt
February 17, 20215 yr Community Expert Cache device dropped offline, this is usually a power/connection problem, but yes that link is correct to remove a device (after it comes back online).
February 17, 20215 yr Author @JorgeB, Isn't it possible to remove the drive from the pool without reconnecting it first (like if it was completely dead)? That way, I wouldn't have to worry about the small possibility of corruption to the few files that aren't cow.
February 17, 20215 yr Community Expert Yes, if you stop the array and refresh main that device will likely be unassigned, if yes you just need to start the array again, or stop and power down and physically remove the device, then just start the array.
February 17, 20215 yr Community Expert The other way is also not risky if the array is set to not autostart and you unassign that device before array start.
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