On Sat, Aug 03, 2002 at 01:03:34AM +0200, Danilo Godec wrote: > On Sat, 3 Aug 2002, Neil Brown wrote: > > > > My concern is that if I power down and replace /dev/sda the machine > > > won't be able to reboot without a rescue CD (lilo.conf has root=/dev/md0 > > > and boot=/dev/md0) or will it? > > A recent enough lilo knows raid partition and will install it self on both > disks. So, in theory both disk should be able to boot you system. In theory, because I was unable to boot this debian sid system with lilo-22.2 and these settings: boot=/dev/md0 root=/dev/md0 install=/boot/boot-menu.b delay=20 map=/boot/map read-only image=/vmlinuz label=Linux After altering the SCSI bios setting to boot from /dev/sdb the screen filled with 01010101010. However this is not specific to booting on degraded mode. I have the same problem when both disks are fine. The machine will only boot after I changed "boot=/dev/sda" and run lilo. I can then revert to "boot=/dev/md0" and re-run lilo and from there booting will work fine. > > > When the bios (Dell Poweredge 1500) will try /dev/sda's mbr and fail, > > > will it then automatically try /dev/sdb? > > It might not even try /dev/sdb if /dev/sda exists... > But with some recent bioses you can choose which drive you want to boot, > sou you could just choose your 2nd SCSI drive and it should work. Yes, I found that out, sorry for the basic questions but I was a bit stressed changing a disk on a production server and having it not restart. But all went well in the end. Thanks again to kernel-raid developers, on another server I replaced a Mylex card with a kernel raid5 partition and the speed gain is tremendous! Cheers, -- ldm@apartia.org - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
