Hi folks, This is driving me crazy. I have a ceph filesystem that behaves normally when I "ls" files, and behaves normally when I copy smallish files on or off of the filesystem, but large files (~ GB size) hang after copying a few megabytes. This is ceph 0.94.5 under Centos 6.7 under kernel 4.3.3-1.el6.elrepo.x86_64. I've tried 64-bit and 32-bit clients with several different kernels, but all behave the same. After copying the first few bytes I get a stream of "slow request" messages for the osds, like this: 2015-12-17 14:20:40.458306 osd.208 [WRN] slow request 1922.166564 seconds old, received at 2015-12-17 13:48:38.291683: osd_op(mds.0.14956:851 100010a7b92.0000000d [stat] 0.5d427a9a RETRY=5 ack+retry+read+rwordered+known_if_redirected e193868) currently reached_pg It's not a single OSD misbehaving. It seems to be any OSD. The OSDs have plenty of disk space, and there's nothing in the osd logs that points to a problem. How can I find out what's blocking these requests? Bryan _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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