Urgent SAN on Redhat x86_64 problem

5 pts.
Tags:
HBA
Logical Unit Number
LUN
Red Hat Enterprise Linux
SAN
Storage Area Network
If I run probe-luns -a, it shows all 3 luns. I then use fdisk -l and it shows the devices as expected. Output after reboot: [root@hhln-mgt-sac101 ~]# fdisk -l Disk /dev/cciss/c0d0: 146.7 GB, 146778685440 bytes 255 heads, 63 sectors/track, 17844 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/cciss/c0d0p1 * 1 13 104391 83 Linux /dev/cciss/c0d0p2 14 17844 143227507+ 8e Linux LVM Output after running "probe-luns -a" [root@hhln-mgt-sac101 ~]# probe-luns -a Adding legacy tape devices to /proc/scsi/device_info Scanning /proc/scsi/qla2xxx/2, target 0, LUN 3 scsi2 00 00 01 HP OPEN-V*2 5007 Direct-Access scsi2 00 00 02 HP OPEN-V*3 5007 Direct-Access scsi2 00 00 03 HP OPEN-V*3 5007 Direct-Access [root@hhln-mgt-sac101 ~]# fdisk -l Disk /dev/cciss/c0d0: 146.7 GB, 146778685440 bytes 255 heads, 63 sectors/track, 17844 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/cciss/c0d0p1 * 1 13 104391 83 Linux /dev/cciss/c0d0p2 14 17844 143227507+ 8e Linux LVM Disk /dev/sda (Sun disk label): 15 heads, 512 sectors, 9991 cylinders Units = cylinders of 7680 * 512 bytes Device Flag Start End Blocks Id System /dev/sda1 0 35 134400 2 SunOS root /dev/sda2 u 35 70 134400 3 SunOS swap /dev/sda3 u 0 9991 38365440 5 Whole disk /dev/sda7 70 9991 38096640 4 SunOS usr Disk /dev/sda1 (Sun disk label): 15 heads, 512 sectors, 9991 cylinders Units = cylinders of 7680 * 512 bytes Device Flag Start End Blocks Id System /dev/sda1p1 0 35 134400 2 SunOS root /dev/sda1p2 u 35 70 134400 3 SunOS swap /dev/sda1p3 u 0 9991 38365440 5 Whole disk /dev/sda1p7 70 9991 38096640 4 SunOS usr Disk /dev/sda3 (Sun disk label): 15 heads, 512 sectors, 9991 cylinders Units = cylinders of 7680 * 512 bytes Device Flag Start End Blocks Id System /dev/sda3p1 0 35 134400 2 SunOS root /dev/sda3p2 u 35 70 134400 3 SunOS swap /dev/sda3p3 u 0 9991 38365440 5 Whole disk /dev/sda3p7 70 9991 38096640 4 SunOS usr Disk /dev/sdb: 117.8 GB, 117888122880 bytes 255 heads, 63 sectors/track, 14332 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdb doesn't contain a valid partition table Disk /dev/sdc (Sun disk label): 15 heads, 512 sectors, 9991 cylinders Units = cylinders of 7680 * 512 bytes Device Flag Start End Blocks Id System /dev/sdc1 0 35 134400 2 SunOS root /dev/sdc2 u 35 70 134400 3 SunOS swap /dev/sdc3 u 0 9991 38365440 5 Whole disk /dev/sdc7 70 9991 38096640 4 SunOS usr Disk /dev/sdc1 (Sun disk label): 15 heads, 512 sectors, 9991 cylinders Units = cylinders of 7680 * 512 bytes Device Flag Start End Blocks Id System /dev/sdc1p1 0 35 134400 2 SunOS root /dev/sdc1p2 u 35 70 134400 3 SunOS swap /dev/sdc1p3 u 0 9991 38365440 5 Whole disk /dev/sdc1p7 70 9991 38096640 4 SunOS usr Disk /dev/sdc3 (Sun disk label): 15 heads, 512 sectors, 9991 cylinders Units = cylinders of 7680 * 512 bytes Device Flag Start End Blocks Id System /dev/sdc3p1 0 35 134400 2 SunOS root /dev/sdc3p2 u 35 70 134400 3 SunOS swap /dev/sdc3p3 u 0 9991 38365440 5 Whole disk /dev/sdc3p7 70 9991 38096640 4 SunOS usr Here is the problem, if I reboot the server, the luns disappear. Fdisk -l shows nothing. I have to run probe-luns again for them to reappear. Please help. Urgent. Thanks Ali.

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have u added the drives to the server,
if they were previously added then there is another senario.
add the entry into the fstab file.
mount those drives and then go to the /etc/fstab.conf file
and are u using any one drive as LVM or all the three.
First try to mount the devices and update the fstab file
use #mount -a
if u are finding any sort of problem with the mounting of devices it will prompt the error.

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