On 2019-12-12 10:40 a.m., Cerem Cem ASLAN wrote: >> Try 'smartctl -t long', then wait some minutes (it will give you an >> estimate of how many), then look at the detailed self-test log output from >> 'smartctl -x'. The long self-test usually reads all sectors on the disk >> and will quantify errors (giving UNC sector counts and locations). > > I tried this one, however I couldn't interpret the results. Here is > the `smartctl -a /dev/sda` output: > https://gist.github.com/1a741135af10f6bebcaf6175c04594df > That drive is toast.. the giveaway here is the over 1000 "Current Pending Sectors.".. there's no point trying to convert this drive to DUP,, it must simply be stopped, and what files you can successfully copy consider lucky. The rest depends on your backup... (I wasn't clear on why your backup is supposed to be bad... BTRFS should have caught any errors during the backup and stopped things with I/O errors.)
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