raid mdadm reiser, possibly boot order?

DigitalSmash · 11-08-2004, 11:25 AM

I've tried doing this a few ways, and tried a few solutions (some which have been successful for me in the past), however nothing. If anyone could help me I'd be very greatful. Thanks in advance.

Dave
----
When I boot with the following line in fstab:

Code:

/dev/md0       /data           reiserfs        defaults        0       1

I get errors on startup:

Code:

# dmesg |grep reiser:
ReiserFS: md0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on md0
ReiserFS: md0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on md0
ReiserFS: md0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on md0
ReiserFS: md0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on md0
ReiserFS: md0: found reiserfs format "3.6" with standard journal

If I boot without the line in fstab however startup is fine, however no md0 on /data. However few things I noticed:

Code:

# cat /proc/mdstat
Personalities : 
unused devices: <none>
# mdadm -As
mdadm: /dev/md0 has been started with 2 drives.
# mount -t reiserfs /dev/md0 /data
# cat /proc/mdstat
Personalities : [raid0] 
md0 : active raid0 sda[0] sdb[1]
      312581632 blocks 64k chunks
      
unused devices: <none>

Now everything is how I want it, but need it on boot. I think this might be useful:

Code:

# ls /etc/rcS.d
README              S10checkroot.sh       S25raid2          S36discover     S40hostname.sh  S48console-screen.sh  S70nviboot
S02mountvirtfs      S18hwclockfirst.sh    S26checkfs.sh     S36mountvirtfs  S40hotplug      S50hwclock.sh
S05bootlogd         S20module-init-tools  S30etc-setserial  S38pppd-dns     S40networking   S51ntpdate
S05initrd-tools.sh  S20modutils           S30procps.sh      S39dns-clean    S45mountnfs.sh  S55bootmisc.sh
S05keymap.sh        S25mdadm-raid         S35mountall.sh    S39ifupdown     S46setserial    S55urandom
# cat /etc/modules
# /etc/modules: kernel modules to load at boot time.
#
# This file should contain the names of kernel modules that are
# to be loaded at boot time, one per line.  Comments begin with
# a "#", and everything on the line after them are ignored.

reiserfs
sata_sil
ide-cd
ide-generic

Thanks again.

mritch · 11-08-2004, 07:11 PM

afaik reiserfs can't be checked for a valid filesystem at bootup - or better say fs-checking is done at every mount by the libs itself.
replace the fs passno (last field in fstab) with a zero so no attempt is made to check that fs.

sl mritch.

DigitalSmash · 11-09-2004, 06:14 AM

Thanks mritch, it boots fine now, however I'm now getting:

Code:

# dmesg |grep reiser
ReiserFS: md0: warning: sh-2021: reiserfs_fill_super: can not find reiserfs on md0
# mount -t reiserfs /dev/md0 /data
mount: wrong fs type, bad option, bad superblock on /dev/md0,
       or too many mounted file systems
       (could this be the IDE device where you in fact use
       ide-scsi so that sr0 or sda or so is needed?)

Any ideas?

DigitalSmash · 11-09-2004, 06:19 AM

Ooops, sorry! If I go:

Code:

# mdadm -As
mdadm: /dev/md0 has been started with 2 drives.
# mount -t reiserfs /dev/md0 /data

It works fine, so I'm guessing mdadm isn't starting on boot? It's in /etc/init.d, and all the /etc/rc*.d.
I did notice in /etc/init.d there is both mdadm and mdadm-raid is this correct?

Thanks again,
D

mritch · 11-09-2004, 03:40 PM

hi

can you post your fstab & raidtab and be sure your harddisk partitions the raid is on set to raid-autodetect. check this with a tool like parted (set minor to "raid").
raid-doc's are in /usr/share/doc, is mdadm necessary at all yet?

mritch.

DigitalSmash · 11-10-2004, 03:26 AM

I can't see any raid doc's, there is a mdadm dir, but it's just examples.. will have a look online for them, is raid-doc for raidtools2 or mdadm? Anyway the config you asked for...

Code:

# cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/hda2       /               ext3    defaults,errors=remount-ro 0       1
/dev/hda1       none            swap    sw              0       0
/dev/hdc        /media/cdrom0   iso9660 ro,user,noauto  0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0
/dev/md0        /data           reiserfs        defaults        0       0
# cat /etc/mdadm/mdadm.conf
DEVICE  /dev/sda /dev/sdb
ARRAY   /dev/md0 level=raid0 num-devices=2 
        UUID=097bf278:5162c361:da9f00c8:301d04ec
        devices=/dev/sda,/dev/sdb

Once I run these two on boot everything is fine..

Code:

# mdadm -As
# mount /data

...if I'm correct /etc/init.d/mdadm-raid should do the first bit and fstab the latter? And from my small knowledge of the linux run levels these look correct (infact, I should probably have put Kill in 6?)...

Code:

# ls /etc/rc*.d/|grep 'mdadm-raid'
S50mdadm-raid
S24mdadm-raid
S24mdadm-raid
S24mdadm-raid
S24mdadm-raid
S50mdadm-raid
S25mdadm-raid
# ls /etc/rc*.d/|grep 'mount'
S31umountnfs.sh
S40umountfs
S31umountnfs.sh
S40umountfs
S02mountvirtfs
S35mountall.sh
S36mountvirtfs
S45mountnfs.sh

Thanks,
D