Hello, I have noticed an unusual amount of crc-errors in downloaded rars, beginning about a week ago. But lets start with the preliminaries. I am using Debian Stretch. Kernel: Linux mars 4.9.0-8-amd64 #1 SMP Debian 4.9.110-3+deb9u4 (2018-08-21) x86_64 GNU/Linux BTRFS-Tools btrfs-progs 4.7.3-1 Smartctl shows no errors for any of the drives in the filesystem.
Btrfs /dev/stats shows zero errors, but dmesg gives me a lot of filesystem related error messages. [5390748.884929] Buffer I/O error on dev dm-0, logical block 976701312, async page read This errors is shown a lot of time in the log. This seems to affect just newly written files. This is the output of btrfs scrub status: scrub status for 1609e4e1-4037-4d31-bf12-f84a691db5d8 scrub started at Tue Nov 27 06:02:04 2018 and finished after 07:34:16 total bytes scrubbed: 17.29TiB with 0 errors What is the probable cause of these errors? How can I fix this? Thanks in advance for your advice Stefan