Re: [BUG] Kernel Bug at fs/btrfs/volumes.c:3638
From: Nageswara R Sastry
Date: Mon Feb 27 2012 - 00:56:42 EST
On àààààààà 25 ààààààà 2012 à. 11:42, Liu Bo wrote:
Hi, I guess you're mounting a quite small partition. Given that this
oops is in such an early stage, could you please show 1) your
mkfs.btrfs options and 2) the log of "btrfs-debug-tree /dev/loop0"?
thanks, liubo
Here are the steps with options,
1. dd if=/dev/zero of=<filename.img> bs=1M count=16
2. mkfs.btrfs <filename.img>
3. Corrupt the <filename.img> using 'mangle'
4. mount -t btrfs -o loop <filename.img> <mount point>
5. # btrfs-debug-tree <filename.img>
Couldn't map the block 3221392384
Couldn't read chunk root
unable to open <filename.img>
# btrfs-debug-tree /dev/loop0
Couldn't map the block 3221392384
Couldn't read chunk root
unable to open /dev/loop0
Regards,
R.Nageswara Sastry
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