On 2018/12/3 下午5:31, Stefan Malte Schumacher wrote: > 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.
No "btrfs:" prefix, looks more like an error message from block level, no wonder btrfs shows no error at all. What is the underlying device mapper? And further more, is there any kernel message with "btrfs" (case-insensitive) in it? Thanks, Qu > > 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 >
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