<div dir="ltr"><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Jul 1, 2014 at 6:21 AM, Osanai, Hisashi <span dir="ltr"><<a href="mailto:osanai.hisashi@jp.fujitsu.com" target="_blank">osanai.hisashi@jp.fujitsu.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><br>
Hi,<br>
<br>
In the following document, there is a setup up procedure for storage and<br>
it seems that swift recommends to use xfs.<br>
<br>
<a href="http://docs.openstack.org/icehouse/install-guide/install/yum/content/installing-and-configuring-storage-nodes.html" target="_blank">http://docs.openstack.org/icehouse/install-guide/install/yum/content/installing-and-configuring-storage-nodes.html</a><br>
===<br>
2. For each device on the node that you want to use for storage, set up the<br>
XFS volume (/dev/sdb is used as an example). Use a single partition per drive.<br>
For example, in a server with 12 disks you may use one or two disks for the<br>
operating system which should not be touched in this step. The other 10 or 11<br>
disks should be partitioned with a single partition, then formatted in XFS.<br>
===<br>
<br>
I would like to know the reason why swift recommends xfs rather than ext4?<br></blockquote><div><br></div><div>The install guide only recommends a single path, not many options, to ensure success.</div><div><br></div><div>
There's a little bit of discussion in the developer docs:</div><div><a href="http://docs.openstack.org/developer/swift/deployment_guide.html#filesystem-considerations" target="_blank">http://docs.openstack.org/developer/swift/deployment_guide.html#filesystem-considerations</a><br>
</div><div><br></div><div>I think that packstack gives the option of using xfs or ext4, so there must be sufficient testing for ext4. </div><div><br></div><div>Anne</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<br>
I think ext4 has reasonable performance and can support 1EiB from design point of view.<br>
# The max file system size of ext4 is not enough???<br>
<br>
Thanks in advance,<br>
Hisashi Osanai<br>
<br>
<br>
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