On Wednesday July 24, agustinus.tedja@infodesign-osd.de wrote:
> Hello everybody,
> I am installing Linux SuSE 8.0 with kernel version 2.4.18-4GB. This
> kernel should have already contain the Software-RAID module as
> advertised by SuSE.
> I have 3 equal drives. For simplicity I installed complete Linux only in
> a drive hdb(the boot and the root is in this normal drive) and now I am
> trying to make a RAID level 0 with the rest 2 drives called hdc and hdd.
> I have made these two drives into a RAID-drive called /dev/md0 with
> YaST2 help and it was successfully mounted and used.
> But each time I rebooted the system, this /dev/md0 could not be
> recognized at startup and all data in /dev/md0 was lost as well. I
> needed to mount it again afterwards, that made it a silly idea.
> What is wrong ? Any hints and helps are gladly welcomed.
Two problems:
1/ your kernel has the MD driver included, but not the raid0
personality module.
2/ You array is madeof /dev/hdc1 and /dev/hdd1, but your
/etc/raidtab says /etc/hdc and /dev/hdd (no '1').
However it seems to load the raid0 module eventually and does assemble
the raid0 array, so you should be able to mount it...
Possibly just fixing raidtab will fix your problem.
Otherwise complain to SuSE. The problem is somehow related to their
kernel and their YaST tool.
NeilBrown
>
> Here is the message on boot:
> ...
> <6>md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
> <6>md: Autodetecting RAID arrays.
> <6> |events: 0000009a]
> <6> |events: 0000009a]
> <6>md: autorun ...
> <6>md: considering hdd1 ...
> <6>md: adding hdd1 ...
> <6>md: adding hdc1 ...
> <6>md: created md0
> <6>md: bind<hdc1,1>
> <6>md: bind<hdd1,2>
> <6>md: running: <hdd1><hdc1>
> <6>md: hdd1's event counter: 0000009a
> <6>md: hdc1's event counter: 0000009a
> <3>request_module[md-personality-2]: Root fs not mounted
> <3>md: personality 2 is not loaded!
> <4>md: do_md_run() returned -22
> <6>md: md0 stopped.
> <6>md: unbind<hdd1,1>
> <6>md: export_rdev(hdd1)
> <6>md: unbind<hdc1,0>
> <6>md: export_rdev(hdc1)
> <6>md: ... autorun DONE.
>
> ...and after some lines below there is other messages:
>
> <3>md: invalid raid superblock magic on hdc
> <4>md: hdc has invalid sb, not importing!
> <4>md: could not import hdc!
> <4>md: autostart hdc failed!
> <6>md: Autodetecting RAID arrays.
> <6> |events: 0000009a]
> <6> |events: 0000009a]
> <6>md: autorun ...
> <6>md: considering hdd1 ...
> <6>md: adding hdd1 ...
> <6>md: adding hdc1 ...
> <6>md: created md0
> <6>md: bind<hdc1,1>
> <6>md: bind<hdd1,2>
> <6>md: running: <hdd1><hdc1>
> <6>md: hdc1's event counter: 0000009a
> <6>md: hdd1's event counter: 0000009a
> <6>md: raid0 personality readahead registered as nr 2
> <6>md0: max total readahead window set to 496k
> <6>md0: 2 data-disks, max readahead per data-disk: 248k
> <4>raid0: looking at hdc1
> <4>raid0: comparing hdc1 (80418112) with hdc1(80418112)
> <4>raid0: END
> <4>raid0: ==> UNIQUE
> <4>raid0: 1 zones
> <4>raid0: looking at hdd1
> <4>raid0: comparing hdd1 (80418112) with hdc1(80418112)
> <4>raid0: EQUAL
> <4>raid0: FINAL 1 zones
> <4>raid0: zone 0
> <4>raid0:
> <4>raid0:
> <4>raid0:
> <4>raid0:
> <4>raid0:
> <4>raid0:
> <4>raid0:
> <4>raid0:
> <4>raid0:
>
> FYI here I give the content of some important files:
> /etc/fstab:
> /dev/hdb3 / reiserfs defaults 1 2
> /dev/hdb2 /boot reiserfs defaults 1 2
> /dev/md0 /dataraid auto noauto, user 0 0
> devpts /dev/pts devpts defaults 0 0
> /dev/cdrecorder /media/cdrecorder auto ro,noauto,user,exec 0 0
> /dev/cdrom /media/cdrom auto noauto,user,exec 0 0
> /dev/fd0 /media/floppy auto noauto,user,sync 0 0
> usbdevs /proc/bus/usb usbdevs noauto 0 0
> proc /proc proc defaults 0 0
> /dev/hdb1 swap swap pri=42 0 0
>
> /etc/raidtab:
> raiddev /dev/md0
> raid-level 0
> nr-raid-disks 2
> persistent-superblock 1
> chunk-size 32
> device /dev/hdc
> raid-disk 0
> device /dev/hdd
> raid-disk 1
>
> /etc/mtab: (not mdtab, inside there is no md0 entry)
> /dev/hdb3 / reiserfs rw 0 0
> proc /proc proc rw 0 0
> devpts /dev/pts devpts rw 0 0
> /dev/hdb2 /boot reiserfs rw 0 0
> shmfs /dev/shm shm rw 0 0
> usbdevfs /proc/bus/usb usbdevs rw 0 0
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