I have a RAID6 MDADM raid, where is stumbled across, the “mismacth count” /sys/block/md128/md/mismatch_cnt. How bad is a none zero value there?
[root@homeserver ~]# cat /proc/mdstat
Personalities : [raid4] [raid5] [raid6]
md128 : active raid6 sda[0] sdg[6] sdf[5] sde[4] sdb[3] sdd[2] sdc[1]
58593766400 blocks super 1.2 level 6, 512k chunk, algorithm 2 [7/7] [UUUUUUU]
bitmap: 5/88 pages [20KB], 65536KB chunk
unused devices: <none>
[root@homeserver ~]# cat /sys/block/md128/md/mismatch_cnt
776
Every time a RAID check is done, the value changes.
Is there something i have to do to prevent data loss?
