Ubuntu-10.04, x86, stock.
I''m running into a situation where a server goes pathological.
Basically, it becomes excruciatingly slow. I can get things through the
file system, but a simple file touch can take 6 - 12 hours.
Top shows various btrfs processes hard at work - typically 100% of a
cpu, (four cpu server), and the machine shows a load of just over 4.
Some flush-btrfs, some btrfs-transacti, occasional others.
File system is was created with "mkfs.btrfs -m single -d single".
The same, (or a substantially similar), problem has arisen once so far
on each of three different servers, so I have a good indication that
it''s not a hardware error.
Aside from rebooting, and rebuilding the file system, is there anything
I can do to clear this state?
Is there any other information I can provide to help debug either
what''s
going on with my server and/or btrfs?
--rich
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