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[sheflug] (no subject)
Dear All
I've been left in charge of a server with a RAID configuration - it's the
first time I've dealt with RAID and, notwithstanding previous advice you've
given me about using software RAID the machine was bought with hardware
RAID, or so I was told. Having poked around various websites, the machine
itself, and a Linux Format article, I'm fairly sure it's a fake raid setup.
RAID was configured in the BIOS, but various distributions insisted on
identifying 2 hard drives. Only FC5 identified 1 hard drive when I
installed it, which is what's on the the server now. The output of dmraid
-r is
/dev/sda: nvidia, "nvidia_hacfjacf", mirror, ok, 586114702 sectors, data@ 0
/dev/sdb: nvidia, "nvidia_hacfjacf", mirror, ok, 586114702 sectors, data@ 0
and the output of mount is
/dev/dm-1 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)
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)
automount(pid1726) on /net type autofs
(rw,fd=4,pgrp=1726,minproto=2,maxproto=4)
I'm not sure what's going on. Did FC5 identify and overrule the BIOS
software, and is it now handling the RAID configuration? Is the BIOS
software still in charge and am I likely to upset it by playing around with
the RAID configuration using Linux tools? How do I identify when one of the
hard drives fails? I've got something in mind like running dmraid -r as a
cron job every minute, and looking for output which doesn't match the above
lines, but as I'm not sure what software is doing what I'm not confident
that this'll do the job. Is there any way of breaking the RAID setup to
test my warning system?
Thanks for your help
David Willington
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