Hello.

quoted text
> What filesystem are you using?  ext3?  ext4?  xfs?  And are you using
> any non-standard patches, such as some of the delayed allocation
> patches that have been floating around?  If you're using ext3, that
> shouldn't be happening.....
I'm using ext3.
I'm running it on kernel 2.6.18-8.1.14.el5 (CentOS 5) for x86_64.
I don't know whether some of the delayed allocation patches are used
for 2.6.18-8.1.14.el5 kernel.

quoted text
> Are you sure the file isn't getting written by some background tasks
> that you weren't aware of?  This seems very strange; what
> virtualization software are you using?  VMware, Xen, KVM?
I'm using VMware Workstation 6.0.0 build 45731 for x86_64.
It seems that there were some background tasks that delays writing.
I tried the following sequence, "sync" didn't affect.

[root@sakura Ubuntu7.10]# service vmware stop
[root@sakura Ubuntu7.10]# sleep 30
[root@sakura Ubuntu7.10]# filefrag Ubuntu7.10.vmem
Ubuntu7.10.vmem: 9280 extents found, perfection would be 5 extents
[root@sakura Ubuntu7.10]# sync
[root@sakura Ubuntu7.10]# filefrag Ubuntu7.10.vmem
Ubuntu7.10.vmem: 9280 extents found, perfection would be 5 extents
[root@sakura Ubuntu7.10]# service vmware start
[root@sakura Ubuntu7.10]# vmware
[root@sakura Ubuntu7.10]# service vmware stop
[root@sakura Ubuntu7.10]# sleep 30
[root@sakura Ubuntu7.10]# filefrag Ubuntu7.10.vmem
Ubuntu7.10.vmem: 9748 extents found, perfection would be 5 extents
[root@sakura Ubuntu7.10]# sync
[root@sakura Ubuntu7.10]# filefrag Ubuntu7.10.vmem
Ubuntu7.10.vmem: 9748 extents found, perfection would be 5 extents
[root@sakura Ubuntu7.10]# service vmware start
[root@sakura Ubuntu7.10]# vmware
[root@sakura Ubuntu7.10]# service vmware stop
[root@sakura Ubuntu7.10]# filefrag Ubuntu7.10.vmem
Ubuntu7.10.vmem: 9749 extents found, perfection would be 5 extents
[root@sakura Ubuntu7.10]# sync
[root@sakura Ubuntu7.10]# filefrag Ubuntu7.10.vmem
Ubuntu7.10.vmem: 9755 extents found, perfection would be 5 extents

Thank you.

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