Messages in this thread | | | Date | Thu, 18 Jan 2001 11:35:57 +0000 (GMT) | From | Tim Fletcher <> | Subject | Re: Linux not adhering to BIOS Drive boot order? |
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> > > How does MD/RAID0 know which array should be /dev/md0? What if you had a > > > second array on /dev/hdb and /dev/hdd, would that become /dev/md0 (assuming > > > it had a kernel/boot sector)? > > > > /etc/raidtab specifies which drives belong in which array, but I only have > > hda and hdc so I can't really answer the question > > What happens if /dev/md0 is /dev/sda and /dev/sdc ( the system also has > sdb ) > and sda fails or is removed ? > the old sdb will now be sda and old-sdc will be sdb. > md0 will look into sda , which is now the non-md disk , and > sdc , which doesn't exists any more ???
This is when devfs comes into its own, as the disks are refered to by their device/controller id not by the /dev/sd{a,b,c,etc} numbering, hence when one fails the others don't change. Also I think the kernel autodetect code for scsi devices will deal with this case, but I'm not sure.
-- Tim Fletcher - Network manager .~. /V\ L I N U X nightshade@solanum.net // \\ >Don't fear the penguin< tim@parrswood.manchester.sch.uk /( )\ irc: Night-Shade on quakenet ^^-^^
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