Re: Kernel BUG: btrfs send - Incremental backup

Swâmi Petaramesh
2014-03-12T08:21:13Z

Hi Josef,

I'm afraid I will not have the time to perform the kernel compilations and
tests you request in the coming days. I'm sorry but I will really be 120%
overloaded already...

Kind regards.

Le mardi 11 mars 2014 13:12:57 Josef Bacik a écrit :
> Well that's odd, I can't think of how this would happen. Can pull
> down btrfs-next and run that and verify you still hit the BUG_ON? If
> you do please apply this patch and re-run and reply with the dmesg.
>
> http://paste.fedoraproject.org/84393/55775013
>
> This will spit out something like this
>
> cur_ino=<NUMBER>, cmp_key objectid=<OTHER NUMBER>
>
> then I need you to unmount your fs and run
>
> btrfs-debug-tree /dev/whatever > blah.txt
>
> You have about 1.5 gig of metadata so that is going to take a while.
> Once that is done you want to go through blah.txt and look for
>
> item <number> key (<OTHER NUMBER FROM ABOVE> EXTENT_DATA <number>)
>
> You need to find all of these entries and copy them down, an example
> output looks like this
>
> item 1 key (286 EXTENT_DATA 577536) itemoff 3889 itemsize 53
> extent data disk byte 12763136 nr 4096
> extent data offset 0 nr 4096 ram 4096
> extent compression 0
>
> That is what I'm looking for, you will have multiple of these. Thanks,
>
> Josef