Hi Greg, Thanks for your reply. I found that in /var/log/ceph directory on each node, there are several log files in it, such as ceph-client.admin.log, ceph-mds.ceph-node1.log, etc., which log file should I look at? Maybe the "ceph-mds.ceph-node1.log"? Specifically, is there any keyword I can search in the log file to locate the object operations? Thanks! LW On Fri, Jan 16, 2015 at 4:21 PM, Gregory Farnum <greg@xxxxxxxxxxx> wrote: > On Fri, Jan 16, 2015 at 11:28 AM, Lipeng Wan <lipengwan86@xxxxxxxxx> wrote: >> Dear all, >> >> Does Ceph provide a way to collect object-level I/O access traces? >> Specifically, can we collect the traces to record how many times each >> object has been accessed (read, write, etc.) during a fixed period of >> time? > > I don't think we have any programmatic access, but depending on what > you need it for you could enable messenger logging (or filestore > logging, depending on what exactly you want) and count the references > there. > -Greg -- 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
