Hi,
I'm trying to setup a HP packaged cluster (2xDL380G4 Servers +MA500G2 Storage) both Servers are connected via 2 SCSI-Links one for each of the storages's redundancy controllers.
The Storage shows as /dev/cciss/c0d1 and /dev/cciss/c1d0. When I create an multipath md device with version 1.6 of mdadm I can create it but restarting the array after I stopped it fails. With version 1.8.2 the size of the generated Array is 0 Blocks but I can restart it (which buys me nothing with that size ;-)
Mixing mdadm-1.6 and 1.8.1 for creating/managing the device doesn't work, it gives me an segfault.
Distro: Is debian woody, with a 2.4.25 debian standard kernel + patches for acl+ea and devmapper (linux-2.4.26-rc1-devmapper-ioctl.patch)
Any Ideas?
Thanks in advance, Oliver
Version 1.60 (debian-package from adrian bunk):
server-b:~# mdadm --create /dev/md0 --level multipath -n 2 /dev/cciss/c0d1 /dev/cciss/c1d0
VERS = 9000
mdadm: array /dev/md0 started.
server-b:/usr/src/packages# cat /proc/mdstat
Personalities : [multipath]
read_ahead 1024 sectors
md0 : active multipath cciss/c1d0[0] cciss/c0d1[1]
573496704 blocks [1/1] [U]unused devices: <none>
mdadm --examine --scan --config=/etc/mdadm/mdadm.conf >> /etc/mdadm/mdadm.conf
server-b:/usr/src/packages/mdadm-1.8.1# cat /etc/mdadm/mdadm.conf
DEVICE /dev/cciss/c[0-9]d[0-9]
ARRAY /dev/md0 level=multipath num-devices=1 UUID=b4370fc9:9f734ab7:d6811ec0:062e8936
spares=2 devices=/dev/cciss/c1d0,/dev/cciss/c0d1
server-b:/usr/src/packages# mdadm /dev/md0 --stop
server-b:/usr/src/packages# mdadm -A /dev/md0 -f /dev/cciss/c1d0 /dev/cciss/c0d1
mdadm: failed to RUN_ARRAY /dev/md0: Invalid argument
Version 1.8.2 (source compiled):
server-b:/usr/src/packages# mdadm --create /dev/md0 --level multipath -n 2 /dev/cciss/c0d1 /dev/cciss/c1d0
mdadm: array /dev/md0 started.
server-b:~# cat /proc/mdstat
Personalities : [multipath]
read_ahead 1024 sectors
md0 : active multipath cciss/c1d0[0] cciss/c0d1[1]
0 blocks [1/1] [U]unused devices: <none>
mdadm --examine --scan --config=/etc/mdadm/mdadm.conf >> /etc/mdadm/mdadm.conf
server-b:/usr/src/packages# cat /etc/mdadm/mdadm.conf
DEVICE /dev/cciss/c[0-9]d[0-9]
ARRAY /dev/md0 level=multipath num-devices=1 UUID=afcb797f:f7cfa5f6:e0ed8819:59529278
devices=/dev/cciss/c1d0,/dev/cciss/c0d1
server-b:/usr/src/packages# mdadm /dev/md0 --stop
server-b:/usr/src/packages/mdadm-1.8.1# mdadm -A /dev/md0 -f /dev/cciss/c1d0 /dev/cciss/c0d1
mdadm: /dev/md0 has been started with 1 drive and 1 spare.
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