Hi.
4.3.0 kernel, raid6 array:
md7 : active raid6 sdg[10] sdad1[9] sdac1[8] sdag1[7] sdaf1[6] sdae1[5] sdaj1[4] sdai1[3] sdah1[2] sdn1[1]
31255089152 blocks super 1.2 level 6, 512k chunk, algorithm 2 [10/10] [UUUUUUUUUU]
bitmap: 1/30 pages [4KB], 65536KB chunk
array had weird failure where many disks went into failed state but
remove && adding these disks "fixed" it (turns out not really fixed it).
Unfortunately now some reads fail:
pread(4, 0x1483a00, 4096, 16003680464896) = -1 EIO (Input/output error)
To reproduce used xfs_io
xfs_io -d -c "pread 16003680464896 4096" /dev/md7
pread64: Input/output error
which does pread exactly as shown above.
write also fails for that area:
xfs_io -d -c "pwrite 16003680464896 4096" /dev/md7
pwrite64: Input/output error
Note that nothing is written in dmesg when that happens.
I've tried various offsets and sizes of pread and at some point that was logged:
[ 848.988518] Buffer I/O error on dev md7, logical block 3907148544, async page read
but no error from underlying devices.
List of bad blocks:
http://sprunge.us/XSWI
What can I do now?
(loosing data from that few sectors is acceptable if the rest will be readable)
Thanks,
--
Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )
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