Displaying 2 results from an estimated 2 matches for "nmirrors".
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mirrors
2013 Oct 22
1
Unable to mount partition
...ee_block
Couldn''t read chunk root
Could not open root, trying backup super
No valid Btrfs found on /dev/sda1
Could not open root, trying backup super
btrfs chunk-recover ran for a few moments, but then failed with
btrfs: cmds-chunk.c:125: process_extent_buffer: Assertion
`!(exists->nmirrors >=2)ยด failed.
It looks like the chunk-recover command isn''t any more available in
the latest btrfs-tools package I installed (from
https://launchpad.net/~samuel-maftoul/+archive/btrfs-tools/+build/4461274).
It did work with the default btrfs from ubuntu 13.10 though, but
showed the e...
2013 Oct 04
0
Recovering btrfs fs after "failed to read chunk root"
...oes like this:
[root@tambura btrfs-progs]# ./btrfs chunk-recover -v /dev/sdb1 > log_2.txt
All Devices:
Device: id = 3, name = /dev/sdc2
Device: id = 4, name = /dev/sda2
Device: id = 1, name = /dev/sdb1
btrfs: cmds-chunk.c:125: process_extent_buffer: Assertion
`!(exist->nmirrors >= 2)'' failed.
So I did try removing sdc2 (that is the drive where btrfs was
replicating data) and the chunk-recover works fine, but end like this:
Fail to recover the chunk tree.
The complete output is here: http://cwillu.com:8080/131.114.3.240/4
After some digging (by adding print...