Re: hi

[Eric Sandeen <sandeen@redhat.com>]

On 9/24/13 6:39 PM, vgrvelu wrote:
> hi
> 
> I created  btrfs file system  on one of  sda partition. when I mount
> with mount -t /dev/sda17  /btrfs,

# mount -t /dev/sda17 /btrfs?

That doesn't work.  Maybe you meant :

# mount -t btrfs /dev/sda17 /btrfs ?

> it is failing with wrong fs type bad option. when i see the dmesg,
> mount command is searching  for ext3, ext2 filesystem on sda17. but
> not btrfs.
> even in the man page of mount, btrfs is not mentioned as supported
> file system type.
> 
> Please help me to solve this issue.

does your kernel support btrfs?  Sounds like maybe not.

To load it in case it's a module:
# modprobe btrfs

then see if the kernel even knows what btrfs is, either via the
module, or due to being built into the kernel image already:

# grep btrfs /proc/filesystems

The first cmd might fail if it's built into the kernel, but if that's
the reason, the 2nd one should find btrfs in /proc/filesystems...

If not, you need a kernel that supports btrfs.

-Eric
 
> thanks
> rajan
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