Trouble with Raid 1

[Tom Lopolito]

what's your raidtab file look like and did you run mkraid after you
created the raidtab file?
-tom

On Sun, 2004-04-25 at 09:28, Doug Sweetser wrote:

> Hello:
> 
> I am trying to setup Raid 1 for my system.  I generate what looks 
> like good info during the creation process, but after rebooting, 
> the md device is not there.  I want to initially just have one hard 
> disk - to prove it is working - then add another disk for real
> mirroring.
> 
> Here is the output during the creation process:
> 
> > mdadm --detail --scan
> ARRAY /dev/md8 level=raid1 num-devices=2 UUID=f5e56fdf:75f6d5ed:ce8eef25:1c2469ab
>    devices=/dev/hdb8
> > cat /proc/mdstat
> Personalities : [raid1] 
> read_ahead 1024 sectors
> md8 : active raid1 ide/host0/bus0/target1/lun0/part8[0]
>       4785344 blocks [2/1] [U_]
>       
> unused devices: <none>
> /dev/md8:
>         Version : 00.90.00
>   Creation Time : Sun Apr 25 08:38:27 2004
>      Raid Level : raid1
>      Array Size : 4785344 (4.56 GiB 4.90 GB)
>     Device Size : 4785344 (4.56 GiB 4.90 GB)
>    Raid Devices : 2
>   Total Devices : 2
> Preferred Minor : 8
>     Persistence : Superblock is persistent
> 
>     Update Time : Sun Apr 25 08:38:28 2004
>           State : dirty, no-errors
>  Active Devices : 1
> Working Devices : 1
>  Failed Devices : 1
>   Spare Devices : 0
> 
> 
>     Number   Major   Minor   RaidDevice State
>        0       3       72        0      active sync   /dev/hdb8
>        1       0        0        1      faulty
>            UUID : f5e56fdf:75f6d5ed:ce8eef25:1c2469ab
>          Events : 0.1
> > cat /etc/mdadm.conf
> DEVICE /dev/hdb8
> ARRAY /dev/md8 level=raid1 num-devices=2 UUID=f5e56fdf:75f6d5ed:ce8eef25:1c2469ab
>    devices=/dev/hdb8
> > cat /etc/fstab
> # /etc/fstab: static file system information.
> #
> # <file system> <mount point>   <type>  <options>       <dump>  <pass>
> proc            /proc           proc    defaults        0       0
> /dev/hda6       none            swap    sw              0       0
> /dev/hda5       /boot           ext3    defaults        0       2
> /dev/hda7       /tmp            ext3    defaults        0       2
> /dev/hda8       /home           ext3    defaults        0       2
> /dev/md8       /mnt           fd    defaults        0       2
> /dev/hda10      /               ext3    defaults,errors=remount-ro 0       1
> /dev/hda9       /var            ext3    defaults        0       2
> # Removable media
> /dev/hdc	/cdrom		iso9660 defaults,ro,noauto,user	0	0
> /dev/fd0	/floppy         auto noauto,user	0	0
> 
> After rebooting:
> > mdadm --detail --scan
> > cat /proc/mdstat
> Personalities :
> read_ahead not set
> unused devices: <none>
> 
> 
> doug
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Tom Lopolito
Parsec Systems LLC
508.297.1021
tom at parsecsystemsllc.com

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