Thanks for your rapid reply - Jae On Tue, Jul 22, 2014 at 1:28 AM, Kyle Bader <kyle.bader at gmail.com> wrote: > > I wonder that OSDs use system calls of Virtual File System (i.e. open, > read, > > write, etc) when they access disks. > > > > I mean ... Could I monitor I/O command requested by OSD to disks if I > > monitor VFS? > > Ceph OSDs run on top of a traditional filesystem, so long as they > support xattrs - xfs by default. As such you can use kernel > instrumentation to view what is going on "under" the Ceph OSDs. > > -- > > Kyle > > -- ??? Jaemyoun Lee CPS Lab. ( Cyber-Physical Systems Laboratory in Hanyang University) E-mail : jmlee at cpslab.hanyang.ac.kr Homepage : http://cpslab.hanyang.ac.kr -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140722/328d6e4e/attachment.htm>
 |