A DAS box is attached to my linux box using LSI SCSI HBA. Volume is properly detected on the linux box and filesystem is created using
mkfs.ext3 /dev/sdc #No partition table
I can not mount the volume using
mount/dev/sdc /mnt/temp -t ext3
But I can mount it using
mount /dev/sdc /mnt/temp -t ext3 -o loop
Can anybody please tell me what "-o loop" option does internally? Has anybody faced this option before?
Update 1: Here is the output of stat and file:
# stat /dev/sdc File: /dev/sdc Size: 0 Blocks: 0 IO Block: 4096 block special file Device: dh/13d Inode: 158 Links: 1 Device type: 8,20 Access: (0640/brw-r-----) Uid: ( 0/ root) Gid: ( 6/ disk) Access: 2010-04-02 12:04:27.288467752 +0530 Modify: 2010-04-02 17:33:55.840630712 +0530 Change: 2010-04-02 12:03:59.609892979 +0530 # file /dev/sdc /dev/sdc: block special (8/32)
Following is the error while mounting after creating the ext3 filesystem
# mount /dev/sdc /mnt/temp -t ext3 mount: wrong fs type, bad option, bad superblock on /dev/sdc, missing codepage or other error In some cases useful info is found in syslog - try dmesg | tail or so # dmesg VFS: Can't find ext3 filesystem on dev sdc.
Thanks in advance, prashant