RAID 1 on SATA "RedHat 4"

ziox · 06-20-2006, 03:28 PM

Hi
I got a problem while and after installing RHEL4 update3
tiring to install RAID1 on SATA hard drives
250 G each
'it boots looks ok but'
when I do fdisk -l
I always get a massage like that

#======================================================
Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 32 257008+ fd Linux raid autodetect
/dev/sda2 33 7681 61440592+ fd Linux raid autodetect
/dev/sda3 7682 12780 40957717+ fd Linux raid autodetect
/dev/sda4 12781 30401 141540682+ 5 Extended
/dev/sda5 12781 16604 30716248+ fd Linux raid autodetect
/dev/sda6 16605 18516 15358108+ fd Linux raid autodetect
/dev/sda7 18517 19791 10241406 fd Linux raid autodetect
/dev/sda8 19792 20052 2096451 fd Linux raid autodetect
/dev/sda9 20053 30401 83128311 fd Linux raid autodetect

Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 32 257008+ fd Linux raid autodetect
/dev/sdb2 33 7681 61440592+ fd Linux raid autodetect
/dev/sdb3 7682 12780 40957717+ fd Linux raid autodetect
/dev/sdb4 12781 30401 141540682+ 5 Extended
/dev/sdb5 12781 16604 30716248+ fd Linux raid autodetect
/dev/sdb6 16605 18516 15358108+ fd Linux raid autodetect
/dev/sdb7 18517 19791 10241406 fd Linux raid autodetect
/dev/sdb8 19792 20052 2096451 fd Linux raid autodetect
/dev/sdb9 20053 30401 83128311 fd Linux raid autodetect

#======================================================
Disk /dev/mdN: 62.9 GB, 62915084288 bytes
2 heads, 4 sectors/track, 15360128 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/mdN doesn't contain a valid partition table

#======================================================
and the output of mdadm -D /dev/mdN
/dev/mdN:
Version : 00.90.01
Creation Time : Tue Jun 20 13:43:49 2006
Raid Level : raid1
Array Size : 10241280 (9.77 GiB 10.49 GB)
Device Size : 10241280 (9.77 GiB 10.49 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 6
Persistence : Superblock is persistent

Update Time : Tue Jun 20 14:55:57 2006
State : dirty
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0

Number Major Minor RaidDevice State
0 8 7 0 active sync /dev/sdaN
1 8 23 1 active sync /dev/sdbN
UUID : f55241be:4580603f:a0abab71:2685099e
Events : 0.16
#=======================================================
and /etc/fstab look like that
# This file is edited by fstab-sync - see 'man fstab-sync' for details
/dev/md3 / ext3 defaults 1 1
/dev/md0 /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs defaults 0 0
/dev/md2 /home ext3 defaults 1 2
none /proc proc defaults 0 0
/dev/md5 /servers ext3 defaults 1 2
none /sys sysfs defaults 0 0
/dev/md6 /tmp ext3 defaults 1 2
/dev/md1 /usr ext3 defaults 1 2
/dev/md4 /var ext3 defaults 1 2
/dev/md7 swap swap defaults 0 0
/dev/hdc /media/cdrom auto pamconsole,fscontext=system_u:.object_r:removable_t,exec,noauto,managed 0 0
#==============================================================
So should I to worry about this message
"Disk /dev/mdN doesn't contain a valid partition tabble" or not?
#==============================================================
Thanks

WhatsHisName · 06-21-2006, 12:41 PM

Quote:

Disk /dev/mdN doesn't contain a valid partition table

Unless you specified a partitionable array using “mdadm -C --auto ...”, then a non-partitionable array was created by default.

The fdisk message just confirms the presence of a non-partitionable array.

ziox · 06-23-2006, 08:47 PM

Thanks a lot