nova/etc/nova
Davanum Srinivas 7517108e7a Support for ext4 as default filesystem for ephemeral disks
The ext3 filesystem does orders of magnitude more I/O than ext4 in
mkfs - a brief benchmark showed 14m to make a 1TB ext3 filesystem
vs 7 seconds to make a 1TB ext4 filesystem, with the ext3 filesystem
doing upwards of 6GB I/O.

Since ext4 has been a default in all major Linux distributions for
a long time now - RHEL5 has it as default, for instance - there is
no reason to default to ext3: users that need ext3 can configure
that themselves. So the default now is ext4 for all linux with
this commit. Also note that for non-linux and non-windows
the default used to be ext3, now it is vfat.

Note that there is still support for ext3 as the default if some
deployers do choose to keep that as the default, by using either
virt_mkfs or default_ephemeral_format configuration option. We
are just trying to move the default for everyone who is starting
fresh.

Originally logged by lifeless as I833356af81df743a63d4442d389be82bc25f3914,
reverted in I8de225729bbc77b263fcac2fa72b0e9cc6c1b2bf by phil and re-proposed
by swapnil in Ibe9e9ba4265125c5bd933cde1a93cca02511bb46

DocImpact

Closes-Bug: #1266262
Change-Id: I92cb51c6118e48fd66ada0e2fee624597c4ad8f0
2015-01-27 12:45:26 -08:00
..
rootwrap.d Support for ext4 as default filesystem for ephemeral disks 2015-01-27 12:45:26 -08:00
README-nova.conf.txt fix the extension of README in etc/nova 2014-03-25 15:01:51 -07:00
api-paste.ini Add "x-compute-request-id" to a response header 2014-11-25 05:11:38 +00:00
cells.json Remove trailing comma from sample JSON 2014-02-26 10:17:01 +08:00
logging_sample.conf etc: replace NullHandler by Python one 2014-12-08 13:56:00 +00:00
policy.json Remove duplicated policy check at nova-network FlatManager 2015-01-06 16:50:28 +08:00
release.sample Allow loading of product/vendor/package info from external file 2012-12-19 18:54:33 +00:00
rootwrap.conf Fix invalid facilities documented in rootwrap.conf 2014-02-16 13:30:14 -08:00