Всё, что есть в логах:

Oct 24 11:23:42 localhost kernel: md: md driver 0.90.3 MAX_MD_DEVS=256, 
MD_SB_DISKS=27
Oct 24 11:23:42 localhost kernel: md: bitmap version 4.39
...
Oct 24 11:23:44 localhost kernel: device-mapper: ioctl: 4.7.0-ioctl 
(2006-06-24) initialised: dm-devel@redhat.com
Oct 24 11:23:44 localhost kernel: md: md0 stopped.