hi,
1) the kernel was:
[root@alfred ~]# uname -a
Linux alfred 2.6.19-1.2288.fc5xen0 #1 SMP Sat Feb 10 16:57:02 EST 2007
i686 athlon i386 GNU/Linux
now upgraded to:
[root@alfred ~]# uname -a
Linux alfred 2.6.20-1.2307.fc5xen0 #1 SMP Sun Mar 18 21:59:42 EDT 2007
i686 athlon i386 GNU/Linux
OS is fedora core 6
[root@alfred ~]# mdadm --version
mdadm - v2.3.1 - 6 February 2006
2) I got the impression that the old 350W power supply was to weak, I
replaced it by a 400W version.
3) re-created the raid:
[root@alfred ~]# mdadm --misc --zero-superblock /dev/hde1
[root@alfred ~]# mdadm --misc --zero-superblock /dev/hdf1
[root@alfred ~]# mdadm --misc --zero-superblock /dev/hdg1
[root@alfred ~]# mdadm --misc --zero-superblock /dev/hdh1
[root@alfred ~]# mdadm --create --verbose /dev/md0 --level=5
--raid-devices=4 --spare-devices=0 /dev/hde1 /dev/hdf1 /dev/hdg1 /dev/hdh1
mdadm: layout defaults to left-symmetric
mdadm: chunk size defaults to 64K
mdadm: size set to 390708736K
mdadm: array /dev/md0 started.
[root@alfred ~]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 hdh1[4] hdg1[2] hdf1[1] hde1[0]
1172126208 blocks level 5, 64k chunk, algorithm 2 [4/3] [UUU_]
unused devices: <none>
same as before.
4) did as dan suggested:
[root@alfred ~]# mdadm -S /dev/md0
[root@alfred ~]# mdadm --misc --zero-superblock /dev/hde1
[root@alfred ~]# mdadm --misc --zero-superblock /dev/hdf1
[root@alfred ~]# mdadm --misc --zero-superblock /dev/hdg1
[root@alfred ~]# mdadm --misc --zero-superblock /dev/hdh1
[root@alfred ~]# mdadm --create /dev/md0 -n 4 -l 5 /dev/hd[efg]1 missing
mdadm: array /dev/md0 started.
[root@alfred ~]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 hdg1[2] hdf1[1] hde1[0]
1172126208 blocks level 5, 64k chunk, algorithm 2 [4/3] [UUU_]
unused devices: <none>
[root@alfred ~]# mdadm --add /dev/md0 /dev/hdh1
mdadm: added /dev/hdh1
[root@alfred ~]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 hdh1[4] hdg1[2] hdf1[1] hde1[0]
1172126208 blocks level 5, 64k chunk, algorithm 2 [4/3] [UUU_]
[>....................] recovery = 0.0% (47984/390708736)
finish=406.9min speed=15994K/sec
unused devices: <none>
seems like it's working now - tnx !
cu
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