software raid

[vu pham]

My RHEL5 server has the root partition mounted on  a software raid 5 of 
3 disks sda, sdb and sdc. I remove one of the disks and mdadm still 
reports everything is ok, all disks are active and sync.

The server hardware log does show the disk is removed. ( I checked this 
just in case I took the drive from another server ).

Below is the output of mdadm.

Thanks for your advice.

Vu


[root at wks-178 ~]# mount
/dev/md2 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/md0 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

[root at wks-178 ~]# mdadm --detail /dev/md2
/dev/md2:
         Version : 00.90.03
   Creation Time : Thu Aug  7 10:50:37 2008
      Raid Level : raid0
      Array Size : 421585152 (402.05 GiB 431.70 GB)
    Raid Devices : 3
   Total Devices : 3
Preferred Minor : 2
     Persistence : Superblock is persistent

     Update Time : Thu Aug  7 10:50:37 2008
           State : clean
  Active Devices : 3
Working Devices : 3
  Failed Devices : 0
   Spare Devices : 0

      Chunk Size : 256K

            UUID : cf7cc365:fbacd375:3a623d90:e9c8d292
          Events : 0.1

     Number   Major   Minor   RaidDevice State
        0       8        3        0      active sync   /dev/sda3
        1       8       19        1      active sync   /dev/sdb3
        2       8       35        2      active sync   /dev/sdc3
[root at wks-178 ~]#