On 12/19/2013 03:21 PM, Robert Collins wrote: > The default ephemeral filesystem in Nova is ext3 (for Linux). However > ext3 is IMNSHO a pretty poor choice given ext4's existence. I can > totally accept that other fs's like xfs might be contentious - but is > there any reason not to make ext4 the default? > > I'm not aware of any distro that doesn't have ext4 support - even RHEL > defaults to ext4 in RHEL5. > > The reason I'm raising this is that making a 1TB ext3 ephemeral volume > does (way) over 5GB of writes due to zeroing all the inode tables, but > an ext4 one does less than 1% of the IO - 14m vs 7seconds in my brief > testing. (We were investigating why baremetal deploys were slow :)). > > -Rob
Seems like a fine change to me. I assume that's all just historical
artifact.
-Sean
--
Sean Dague
Samsung Research America
[email protected] / [email protected]
http://dague.net
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