Btrfsck stuck when checking fs roots

Btrfsck stuck when checking fs roots

[Joan]

Hello i've a data partition in my system formated as btrfs,  I can
mount the partition without problems, but from time to time I've some
lockings in the disk that force me to reboot the system.
Lately I have been having problems when unmounting the disk too

I have been running for several weeks the kernel 3.3.1, and my
btrfs-tools are version 0.19+20120328-1 (from debian wheezy)

This is the output I am getting from btrfsck, and it always ends up
aborting the "checking fs roots" part.


$ btrfsck /dev/sda1
....................
ref mismatch on [2188599418880 2072576] extent item 1, found 0
Incorrect local backref count on 2188599418880 root 261 owner 26476652
offset 0 found 0 wanted 1 back 0x6b3435e8
backpointer mismatch on [2188599418880 2072576]
owner ref check failed [2188599418880 2072576]
ref mismatch on [2188877869056 4231168] extent item 1, found 0
Incorrect local backref count on 2188877869056 root 261 owner 26476649
offset 0 found 0 wanted 1 back 0x97bc7798
backpointer mismatch on [2188877869056 4231168]
owner ref check failed [2188877869056 4231168]
ref mismatch on [2188882100224 3911680] extent item 1, found 0
Incorrect local backref count on 2188882100224 root 261 owner 26476654
offset 0 found 0 wanted 1 back 0x97bc7840
backpointer mismatch on [2188882100224 3911680]
owner ref check failed [2188882100224 3911680]
ref mismatch on [2188886011904 1798144] extent item 1, found 0
Incorrect local backref count on 2188886011904 root 261 owner 26476657
offset 0 found 0 wanted 1 back 0x97bc78e8
backpointer mismatch on [2188886011904 1798144]
owner ref check failed [2188886011904 1798144]
ref mismatch on [2188900532224 1875968] extent item 1, found 0
Incorrect local backref count on 2188900532224 root 261 owner 26476659
offset 0 found 0 wanted 1 back 0x97bc7b70
backpointer mismatch on [2188900532224 1875968]
owner ref check failed [2188900532224 1875968]
ref mismatch on [2188902408192 2080768] extent item 1, found 0
Incorrect local backref count on 2188902408192 root 261 owner 26476664
offset 0 found 0 wanted 1 back 0x97bc7c18
backpointer mismatch on [2188902408192 2080768]
owner ref check failed [2188902408192 2080768]
Errors found in extent allocation tree
checking fs roots
Aborted

Is there anything I can do to force a check only in this part while
getting more debug?