not able to mount ext4 in SLES 11

info1686 · 09-03-2009, 12:57 AM

Hi,
I want to create and mount an ext4 file-system on SLES 11.
Though I am able to create it, I cannot mount it.

I can format as ext4 as well as ext4dev.

Code:

# mkfs -t ext4dev /dev/sdb2 mke2fs 1.41.1 (01-Sep-2008) Filesystem label= OS type: Linux Block size=1024 (log=0) Fragment size=1024 (log=0) 102400 inodes, 409600 blocks 20480 blocks (5.00%) reserved for the super user First data block=1 Maximum filesystem blocks=67633152 50 block groups 8192 blocks per group, 8192 fragments per group 2048 inodes per group Superblock backups stored on blocks: 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409 Writing inode tables: done Creating journal (8192 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 35 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.

Code:

# mke2fs -t ext4 /dev/sdb2
mke2fs 1.41.1 (01-Sep-2008)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
102400 inodes, 409600 blocks
20480 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67633152
50 block groups
8192 blocks per group, 8192 fragments per group
2048 inodes per group
Superblock backups stored on blocks:
        8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409

Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 36 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.

However, when I mount it returns an error :

Code:

# mount -t ext4 /dev/sdb2 /ext4 mount: unknown filesystem type 'ext4'

Code:

# mount -t ext4dev /dev/sdb2 /ext4
mount: unknown filesystem type 'ext4dev'

I have the correct e2fsprogs version :

Code:

rpm -q e2fsprogs e2fsprogs-1.41.1-13.9

Thanks

andywebsdale · 09-03-2009, 04:03 AM

Maybe your version of 'mount' isn't new enough. I'm sure others have had this problem-maybe googling will turn something up

davesny · 09-03-2009, 07:26 AM

Does your distribution support using an ext4 file system? Try using Yast, Partitioning to see if it is supported. I understand that previously it was experimental.
davesny

dmk0182 · 04-20-2011, 12:03 PM

I know this thread is old, but it shows up first in google for this problem which is still relevant in sles11sp1.

In order to mount ext4, you will need the ext4dev-kmp-default package installed which is available on the sles11 install dvd. you can then

Code:

modprobe --allow-unsupported ext4
mount -t ext4 /dev/xxx