Hi, all There is a small bug fixing in KeyValueStore to prevent osd crash
When run random write 4k test on rbd with KeyValueStore backend, random osd crashes, and ceph-osd.log shows a segmentation fault which caused by multi threads updating the strip_header->buffers, so add mutex here Another problem is after running pretty long time, osd being killed by os due to OOM, which is also caused by there is no eviction mechanism in strip_header->buffers, so add a option in config_opts.h to turn strip_header->buffers off by default I saw slight performance drop when turn off the strip_header->buffers in a short time test( for I can't run a long time test due to osd will crash ), so does the strip_header->buffers necessary? If so, can I add a random cache mechanism on that? =========================== KeyValueStore: Add mutex when update strip_header->buffers to avoid segmentation fault Add option in config_opts.h to turn on/off strip_header->buffers to prevent OOM The pull request : https://github.com/ceph/ceph/pull/2875#issue-48042745 Best Regards, -Chendi -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
