Neil Brown wrote:
>
> On Tuesday May 21, kc130iseo@coastalnet.com wrote:
> >
> > mdadm --examine --sparc2.2update /dev/sda1
> >
> mdadm --examine /dev/sda1
> should show the correct superblock.
Very Slick! All went well.
> > ## Assemble the array (use raid device order):
> > ## Only assemble active devices, not spare.
> >
> > mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdf1 /dev/sdd1 /dev/sde1
mdadm: /dev/md0 has been started with 5 drives.
> > ## Verify that raid is running
> >
> > cat /proc/mdstat
Personalities : [raid5]
read_ahead 1024 sectors
md0 : active raid5 sde1[3] sdd1[2] sdf1[1] sdb1[0] sda1[4]
70726656 blocks level 5, 128k chunk, algorithm 0 [5/5] [UUUUU]
unused devices: <none>
## There's something fishy here.^
> > ## Verify that data is intact
## Excerpt from /etc/fstab
----------------------------------------------------------------
/dev/md0 /usr/local/archive ext2 defaults
1 2
/usr/local/archive/shares/redhat/redhat-7.2/enigma-i386-disc1.iso
/home/ftp/pub/redhat/redhat-7.2/disc1 iso9660 defaults,loop,ro 0 0
/usr/local/archive/shares/redhat/redhat-7.2/enigma-i386-disc2.iso
/home/ftp/pub/redhat/redhat-7.2/disc2 iso9660 defaults,loop,ro 0 0
----------------------------------------------------------------
## Mount RAID filesystems:
----------------------------------------------------------------
[root@winggear root]# mount /usr/local/archive/
[root@winggear root]# mount /home/ftp/pub/redhat/redhat-7.2/disc1
[root@winggear root]# mount /home/ftp/pub/redhat/redhat-7.2/disc2
----------------------------------------------------------------
## See that we can list mounted filesystems
-------------------------------------------------------------------------------
[root@winggear /]# ls /usr/local/archive/shares/
admin applications Av8bigtd-Gold Development Pvcs Archive redhat
users
[root@winggear /]# ls /home/ftp/pub/redhat/redhat-7.2/disc1
autorun images README.fr RedHat RELEASE-NOTES.fr
RPM-GPG-KEY
boot.cat README README.it RELEASE-NOTES RELEASE-NOTES.it
TRANS.TBL
COPYING README.de README.ja RELEASE-NOTES.de RELEASE-NOTES.ja
dosutils README.es README.ko RELEASE-NOTES.es RELEASE-NOTES.ko
[root@winggear /]# ls /usr/local/archive/shares/
admin applications Av8bigtd-Gold Development Pvcs Archive redhat
users
-------------------------------------------------------------------------------
### This is fabulous!!! ###
Thank you so.............. much!
There is only one thing that doesn't look right to me. That is the
contents of "/proc/mdstat".
The device numbers seem mismatched to their device names.
Also, different from what I'm used to seeing, is that the spare drive
(sdc1) is not shown in the "active" list as it was before.
## /proc/mdstat before (with 2.2 kernel):
----------------------------------------------------------------------------------
Personalities : [raid5]
read_ahead 1024 sectors
md0 : active raid5 sdf1[5] sde1[4] sdd1[3] sdc1[2] sdb1[1] sda1[0]
70726656 bloc
ks level 5, 128k chunk, algorithm 0 [5/5] [UUUUU]
unused devices: <none>
----------------------------------------------------------------------------------
## /proc/mdstat after (with 2.4 kernel, fixed with mdadm):
----------------------------------------------------------------------------------
Personalities : [raid5]
read_ahead 1024 sectors
md0 : active raid5 sda1[4] sde1[3] sdd1[2] sdf1[1] sdb1[0]
70726656 blocks level 5, 128k chunk, algorithm 0 [5/5] [UUUUU]
unused devices: <none>
----------------------------------------------------------------------------------
## Superblocks look fine
------------------[ mdadm --examine /dev/sda1 ]------------------
/dev/sda1:
Magic : a92b4efc
Version : 00.90.00
UUID : 494dd54f:15e7b548:90bae5c3:532ac910
Creation Time : Thu Apr 26 12:29:38 2001
Raid Level : raid5
Device Size : 17681664 (16.86 GiB 18.15 GB)
Raid Devices : 5
Total Devices : 5
Preferred Minor : 0
Update Time : Tue May 21 18:05:13 2002
State : dirty, no-errors
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Checksum : 652969c1 - correct
Events : 0.178
Layout : left-asymmetric
Chunk Size : 128K
Number Major Minor RaidDevice State
this 4 8 1 0 active sync /dev/sda1
0 0 8 17 1 active sync /dev/sdb1
1 1 8 81 2 active sync /dev/sdf1
2 2 8 49 3 active sync /dev/sdd1
3 3 8 65 4 active sync /dev/sde1
4 4 8 1 0 active sync /dev/sda1
-----------------------------------------------------------------
Other than these minor things, IT'S PERFECT!
--Cal Webster
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