Hello, cooker.

linux 2.4.17
raidtools-0.90-11mdk

raiddev /dev/md2
    raid-level                5
    nr-raid-disks             4
    nr-spare-disks            0
    persistent-superblock     0
    chunk-size                4
    parity-algorithm          left-symmetric

    device                    /dev/loop0
    raid-disk                 0
    device                    /dev/loop1
    raid-disk                 1
    device                    /dev/loop2
    raid-disk                 2
    device                    /dev/loop3
    raid-disk                 3

after creating test raid5 array on loop devices, i run mkraid,
raidstop, raidstart.

[root@backupsrv /home]# cat /proc/mdstat
Personalities : [raid0] [raid5]
read_ahead 1024 sectors
md2 : active raid5 [dev 07:02][2] [dev 07:01][1] [dev 07:00][0]
      307008 blocks level 5, 4k chunk, algorithm 2 [4/3] [UUU_]

with persistent-superblock = 0, i got various errors while try to
start raid arrays (loop devices, hard disks): arrays starts without
one disk, arrays does not start: it can't read superblock on disk0,
arrays does not start: SIGIO failed...

with persistent-superblock = 1 works more fine.

-- 
WBR, MaxiM                          mailto:[EMAIL PROTECTED]
CJSC Interdnestrcom
Tiraspol, Moldova
www.idknet.com, www.isp.idknet.com



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