Thanks for clarifying, Mark. I made a quick change to the docs: https://github.com/rca/ceph/commit/37b57cdf0fdc5c03eeff3f5eb58ff4010ce581f6 Can I send you a pull request? Thanks, -Roberto. On Thu, Jan 3, 2013 at 1:20 PM, Mark Nelson <mark.nelson@xxxxxxxxxxx> wrote: > On 01/03/2013 03:16 PM, Roberto Aguilar wrote: >> >> Hello, >> >> I read the "Filesystems" section in the "Hard disk and file system >> recommendations" [1] documentation and was confused on whether or not >> I should be using the setting: >> >> filestore xattr use omap = true >> >> The section reads: >> >> "[...] but the ext4 is too small to be usable. To use these file >> systems, you should add the following like to the [osd] section of >> your ceph.conf file.:" >> >> Does that mean I the setting applies to systems that are using ext4, >> or does it apply to _any_ filesystem that was mentioned, i.e. btrfs, >> xfs, and ext4. >> >> Thanks! >> -Roberto. >> >> [1] >> http://ceph.com/docs/master/rados/configuration/filesystem-recommendations/ >> -- >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > Hi Roberto, > > You should always use "filestore xattr use omap = true" with EXT4. You can > optionally use it for BTRFS and XFS. I've done a bit of testing and haven't > yet been able to determine if there is any significant advantage or > disadvantage to using it on BTRFS and XFS from a performance perspective. > So far the performance differences haven't been consistent or significant > enough to be conclusive. > > Mark > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
