Hello Ralf-Peter,
Actually it is possible. Check out David's response to my question from
some time ago:
http://permalink.gmane.org/gmane.comp.file-systems.btrfs/14227
The nocow.c script he attached does just the thing you want. The script
is really working. I needed nocow for different purpose but it did not
occur to me to try it on VM image and see if the performance would
improve. Sounds like a great idea. If you get around to try it, pls.
post your impressions here.
best
~dima
On 02/13/2012 04:17 PM, Ralf-Peter Rohbeck wrote:
Hello,
is it possible to set nodatacow on a per-file basis? I couldn't find
anything.
If not, wouldn't that be a great feature to get around the performance
issues with VM and database storage? Of course cloning should still
cause COW.
Thanks,
Ralf-Peter
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