[NILFS users] More test results
ryusuke at osrg.net
Fri Jun 19 12:01:57 JST 2009
On Mon, 15 Jun 2009 12:43:59 +0200, "Dipl.-Ing. Michael Niederle" wrote:
> I reinstalled my pen drive and continued testing just doing my
> regular work. (I always work on a pen drive based system.) I did
> *not* start the gc-daemon and worked without any problems for
> several hours. Free space was reduced by several GBs - but I started
> with plenty of free space left.
> During the night I run the gc to claim back unused space. In the
> morning the gc seemed to have crashed again. The PC still worked but
> essential parts of the system were frozen - so no clean shutdown was
> This time the system was severely damaged. The next reboot failed
> with an error message (failed mount). (Sorry, I was in a hurry and
> did not memoize the exact reading of the message.)
Hmm, did you apply any change to accelerate GC?
Do you think how can I rate up the reproducibility of your problem?
Sounds some effort is needed to clean up quality problems of the
> Another issue: Sometimes the gc stops after some time leaving the
> following message in the kernel log. (The message seems to stem from
> another part of the kernel, but I'm sure it is connected to the
> vmap() failed while attempting to map about 256 MB of memory
This message means that an ioctl routine of nilfs failed to allocate
virtual memory in kernel. Setting nsegments_per_clean to a high value
makes this likely.
> (Sorry, once more - I had stored the exact message on the crashed
> file system and had to repeat it from memory.)
> I'm using an unmodified 2.6.30 kernel with builtin nilfs (no module).
> Greetings, Michael
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