Question: I've not gone through a setup yet, just an interested lurker reading and interpreting capabilities at this time. my understanding of Ceph journal is that one can use a partition or a file on a Filesystem.... if i use a filesystem, i can have assured integrity if the FS does this for me (ala BTRFS) If i choose to use a partition for the journal: --does this get auto-formatted with a filesystem? (if so, what?) --I assume no filesystem; but is there check-summing of all data within the journal? Journal Performance: --Is the performance of the journal synchronous or asynchronous? --is the performance limited by the performance of the journals queue depth 1 capability? (much like zfs) --is the journal write pattern random, or largely sequential? --if i understand; is it correct to say that *all* writes, no matter sync or async from the client will go into the journal, correct? thank you -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140731/ec84affb/attachment.htm>
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