CentOS - Nov 2009 - no valid partitiontables anymore

Hi,

recently I had to shut down an iscsi-raid an the connected servers.

After the reinstallation and changing the ip config to match our new lan
design, I can login to the iscsi device, the volumes are there and I can
establish an iscsi link to some volumes.

But, some other volumes on the iscsi device are reported with an invalid
partition table or that they can't be mounted.


e.g.:

fdisk -l /dev/sdf

Disk /dev/sdf: 53.6 GByte, 53687091200 Byte
64 heads, 32 sectors/track, 51200 cylinders
Einheiten = Zylinder von 2048 ? 512 = 1048576 Bytes

   Ger?t  boot.     Anfang        Ende     Bl?cke   Id  System
/dev/sdf1               1       51200    52428784   83  Linux


fdisk -l /dev/sdf1

Disk /dev/sdf1: 53.6 GByte, 53687074816 Byte
64 heads, 32 sectors/track, 51199 cylinders
Einheiten = Zylinder von 2048 ? 512 = 1048576 Bytes

Disk /dev/sdf1 doesn't contain a valid partition table


mount -t ext3 /dev/sdf1 /export/iscsi01-UDV1/

(lot of german information, e.g. wrong fs-type, damaged superblock ...)

mount: Falscher Dateisystemtyp, ung?ltige Optionen, der
       Superblock von /dev/sdf1 ist besch?digt, fehlende
       Kodierungsseite oder ein anderer Fehler
       Manchmal liefert das Syslog wertvolle Informationen ? versuchen
       Sie  dmesg | tail  oder so


dmesg

... VFS: Can't find ext3 filesystem on dev sdf1.


But I'm sure, about using ext3. The error message is the same with
maount -t ext2 (for testing)

Any hint would make my happy


Thanks a lot an best regards,

	G?tz
-- 
G?tz Reinicke
IT-Koordinator

Tel. +49 7141 969 420
Fax  +49 7141 969 55 420
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G??tz Reinicke - IT-Koordinator wrote:
> fdisk -l /dev/sdf1
This is invalid, you don't run fdisk against a partition only
against a device, in this case /dev/sdf

> (lot of german information, e.g. wrong fs-type, damaged superblock ...)
Are you sure that device is an ext3 file system? Try e2fsck on
it?

nate