Re: Some problems reproduced (strace, test code etc.)

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Mike,
please see replies inline

1) Mmap "no such device" error

This is currently a limitation of fuse, where it is unable to mmap
which has written(dirty) pages since it cannot reliably flush pages. I
saw a few mails being exchanged about the fix for this happening in
fuse. All fuse based filesystems currently face this, till the fix
enters a fuse/kernel release.

2) Low troughput with "dd" its default blocksize

default 'dd' happens with 512 bytes which causes an exceptionally high
number of context switches. this is a known effect.

3) cat: -: No such file or directory, when chrooted inside a glusterfs
Linux root

does it work with chrooted non glusterfs root? I'm looking into this..

thanks for the extensive tests!

avati


These problems occur with the following (all) combinations I've tested:
- Linux 2.6.18 (FUSE API 7.7) / Libfuse 2.6.5 / Gluster 1.3.0-pre4
- Linux 2.6.18 (FUSE API 7.8) / Libfuse 2.6.3 / Gluster 1.3.0-pre4
- Linux 2.6.18 (FUSE API 7.8) / Libfuse 2.6.5 / Gluster 1.3.0-pre4
- Linux 2.6.20 (FUSE API 7.8) / Libfuse 2.6.5 / Gluster 1.3.0-pre4
- Linux 2.6.20 (FUSE API 7.8) / Libfuse 2.6.3 / Gluster 1.3.0-pre4
- Linux 2.6.18 (FUSE API 7.8) / Libfuse 2.6.5 / Gluster 1.4 (patch 174)

You can find the spec files I am using at:
http://www.satl.com/~machuidel/glusterfs/

The spec files are the same as delivered by default in "examples". No changes.
Glusterfsd and the glusterfs mount are both on the same machine.

Hope it helps.

Machuidel


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--
Anand V. Avati




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