Re: Input/output error, nothing appended in dmesg

[Tomasz Chmielewski <tch@virtall.com>]

On 2016-08-06 00:38, Tomasz Chmielewski wrote:

>> Too big for the known problem though.  Still, can you btrfs-debug-tree
>> and just make sure it doesn't have inline items?
> 
> Hmmm....
> 
> # btrfs-debug-tree /dev/xvdb > /root/debug.tree
> parent transid verify failed on 355229302784 wanted 49943295 found 
> 49943301
> parent transid verify failed on 355229302784 wanted 49943295 found 
> 49943301
> Ignoring transid failure
> parent transid verify failed on 355233251328 wanted 49943299 found 
> 49943303
> parent transid verify failed on 355233251328 wanted 49943299 found 
> 49943303
> Ignoring transid failure
> print-tree.c:1105: btrfs_print_tree: Assertion failed.
> btrfs-debug-tree[0x418d99]
> btrfs-debug-tree(btrfs_print_tree+0x26a)[0x41acf6]
> btrfs-debug-tree(main+0x9a5)[0x432589]
> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7f2369de0f45]
> btrfs-debug-tree[0x4070e9]

And, miracle cure O_o

# file ./2016-08-02/serverX/syslog.log
ERROR: cannot read `./2016-08-02/serverX/syslog.log' (Input/output 
error)

# echo 3 > /proc/sys/vm/drop_caches

# file 2016-08-02/serverX/syslog.log
2016-08-02/serverX/syslog.log: ASCII text, with very long lines

# cat 2016-08-02/serverX/syslog.log
(...)


Tomasz Chmielewski
https://lxadm.com