On Wed, Mar 23, 2016 at 7:46 PM, Yan, Zheng <zyan@xxxxxxxxxx> wrote: > >> On Mar 24, 2016, at 01:28, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote: >> >> On Mon, Mar 21, 2016 at 6:02 AM, Yan, Zheng <zyan@xxxxxxxxxx> wrote: >>> >>>> On Mar 21, 2016, at 18:17, Kenneth Waegeman <kenneth.waegeman@xxxxxxxx> wrote: >>>> >>>> Thanks! As we are using the kernel client of EL7, does someone knows if that client supports it? >>>> >>> >>> fadvise DONTNEED is supported by kernel memory management subsystem. Fadvise DONTNEED works for all filesystems (including cephfs kernel client) that use page cache. >> >> Does the kernel pass it through to the OSDs? They take advisory flags >> for this kind of thing now as well, which RBD uses for exactly this >> (in block form, of course). > > No, fadvise DONTNEED syscall is transparent to filesystem driver. That's what I figured. Do we have any why of identifying it? It's not critical of course but it'd be nice if we could pass it down. -Greg _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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