Re: Input/output error, nothing appended in dmesg

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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
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