https://tracker.ceph.com/https://tracker.ceph.com/favicon.ico2013-04-17T09:35:24ZCeph rbd - Bug #4739: Failed assert in librbd with rbd cache enabledhttps://tracker.ceph.com/issues/4739?journal_id=204662013-04-17T09:35:24ZSage Weilsage@newdream.net
<ul><li><strong>Priority</strong> changed from <i>Normal</i> to <i>Urgent</i></li></ul> rbd - Bug #4739: Failed assert in librbd with rbd cache enabledhttps://tracker.ceph.com/issues/4739?journal_id=204672013-04-17T09:36:08ZSage Weilsage@newdream.net
<ul></ul><p>How easy is this to reproduce? We have fixed several causes of this behavior, but I cant' remember offhand if they were all included in v0.60.</p> rbd - Bug #4739: Failed assert in librbd with rbd cache enabledhttps://tracker.ceph.com/issues/4739?journal_id=204782013-04-17T09:53:06ZJosh Durgin
<ul></ul><p>The latest cause of this was <a class="issue tracker-1 status-3 priority-6 priority-high2 closed" title="Bug: ObjectCacher: read waiters for parent data during copyup get reordered, causing the write order a... (Resolved)" href="https://tracker.ceph.com/issues/4531">#4531</a>, whose fix was just merged yesterday. If this is reproducible, could you try using librbd from the next branch in the development testing packages?</p> rbd - Bug #4739: Failed assert in librbd with rbd cache enabledhttps://tracker.ceph.com/issues/4739?journal_id=204832013-04-17T10:25:38ZMike Kellypioto@pioto.org
<ul></ul><p>Josh Durgin wrote:</p>
<blockquote>
<p>The latest cause of this was <a class="issue tracker-1 status-3 priority-6 priority-high2 closed" title="Bug: ObjectCacher: read waiters for parent data during copyup get reordered, causing the write order a... (Resolved)" href="https://tracker.ceph.com/issues/4531">#4531</a>, whose fix was just merged yesterday. If this is reproducible, could you try using librbd from the next branch in the development testing packages?</p>
</blockquote>
<p>That could be us, too... this is a clone.</p>
<p>I can try again with a fresh format 2 image (not cloned from anything). If it still fails, we can try out a development branch, but otherwise it sounds kinda like <a class="issue tracker-1 status-3 priority-6 priority-high2 closed" title="Bug: ObjectCacher: read waiters for parent data during copyup get reordered, causing the write order a... (Resolved)" href="https://tracker.ceph.com/issues/4531">#4531</a>.</p> rbd - Bug #4739: Failed assert in librbd with rbd cache enabledhttps://tracker.ceph.com/issues/4739?journal_id=204932013-04-17T15:51:14ZMike Kellypioto@pioto.org
<ul></ul><p>Mike Kelly wrote:</p>
<blockquote>
<p>Josh Durgin wrote:</p>
<blockquote>
<p>The latest cause of this was <a class="issue tracker-1 status-3 priority-6 priority-high2 closed" title="Bug: ObjectCacher: read waiters for parent data during copyup get reordered, causing the write order a... (Resolved)" href="https://tracker.ceph.com/issues/4531">#4531</a>, whose fix was just merged yesterday. If this is reproducible, could you try using librbd from the next branch in the development testing packages?</p>
</blockquote>
<p>That could be us, too... this is a clone.</p>
<p>I can try again with a fresh format 2 image (not cloned from anything). If it still fails, we can try out a development branch, but otherwise it sounds kinda like <a class="issue tracker-1 status-3 priority-6 priority-high2 closed" title="Bug: ObjectCacher: read waiters for parent data during copyup get reordered, causing the write order a... (Resolved)" href="https://tracker.ceph.com/issues/4531">#4531</a>.</p>
</blockquote>
<p>Yes, using a "fresh" image, instead of a clone, this didn't issue didn't happen again, but before, when trying to sync to the same cloned image, the issue continued to happen. So, it sounds like this is related to <a class="issue tracker-1 status-3 priority-6 priority-high2 closed" title="Bug: ObjectCacher: read waiters for parent data during copyup get reordered, causing the write order a... (Resolved)" href="https://tracker.ceph.com/issues/4531">#4531</a>, and is hopefully now fixed. I guess this can be closed, and I'll reopen if I manage to reproduce it again.</p> rbd - Bug #4739: Failed assert in librbd with rbd cache enabledhttps://tracker.ceph.com/issues/4739?journal_id=204942013-04-17T15:53:14ZSage Weilsage@newdream.net
<ul><li><strong>Status</strong> changed from <i>New</i> to <i>Duplicate</i></li></ul><p>see <a class="issue tracker-1 status-3 priority-6 priority-high2 closed" title="Bug: ObjectCacher: read waiters for parent data during copyup get reordered, causing the write order a... (Resolved)" href="https://tracker.ceph.com/issues/4531">#4531</a></p> rbd - Bug #4739: Failed assert in librbd with rbd cache enabledhttps://tracker.ceph.com/issues/4739?journal_id=204952013-04-17T15:53:37ZSage Weilsage@newdream.net
<ul><li><strong>Project</strong> changed from <i>Ceph</i> to <i>rbd</i></li></ul>