All,
The current setup that I have is a 2.2.11 kernel with the 19990824
raidtools and patches. I have setup 2 linear md's and then a mirror of
those two as follows:
[ /etc/raidtab ]
raiddev /dev/md0
raid-level linear
nr-raid-disks 2
chunk-size 8
persistent-superblock 1
device /dev/sdc1
raid-disk 0
device /dev/sdd1
raid-disk 1
raiddev /dev/md1
raid-level linear
nr-raid-disks 2
chunk-size 8
persistent-superblock 1
device /dev/sde1
raid-disk 0
device /dev/sdf1
raid-disk 1
raiddev /dev/md2
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
persistent-superblock 1
chunk-size 8
device /dev/md0
raid-disk 0
device /dev/md1
raid-disk 1
Everything seems to work fairly well - at least it doesn't break
on shutdown, startup or when just doing normal work. However if I try to
stress test it by starting a copy of a large file to the /dev/md2, then
remove one of the disks in the raid group, it will (while scolling loads of
messages on the console) continue copying for a while and then just stop
and hang until the disk is re-inserted. I don't understand what is
happening. Once I actually caused the machine to panic by doing this
multiple times in the middle of the copy.
Any ideas?
Brian
---
Brian C. Huffman
Associate Systems Engineer - Information Resources
DuPont Pharmaceuticals Company
Little Falls 1, Suite 215 / Room 205
2711 Centerville Road
Wilmington, DE 19808
