https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-15833 Lustre <p>llapi_search_fsname() uses to determine the mountpoint of a path and then return its fsname.</p> <p>realpath() executes lstat() for each component of the path: this means that the client must have a LDLM read lock on every directory in the path.<br/> These operations can be slow when some clients modify parent directories.</p> <p>We can use st_dev or llapi_get_name to reduce the number of stats.</p> LU-15833

Don't use realpath in llapi_search_fsname.

Improvement Minor Resolved Fixed Etienne Aujames Etienne Aujames Mon, 9 May 2022 13:42:49 +0000 Tue, 28 Mar 2023 13:36:25 +0000 Mon, 12 Sep 2022 15:26:53 +0000 Lustre 2.16.0 Lustre 2.15.3 0 2 <p>"Etienne AUJAMES &lt;eaujames@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/47258" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/47258</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15833" title="Don&#39;t use realpath in llapi_search_fsname." class="issue-link" data-issue-key="LU-15833"><del>LU-15833</del></a> llapi: don't use realpath in llapi_search_fsname()<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 2c759b6e921e433f3eff9c04270fb58f8eebd0fd</p> <p>Landed for 2.16</p> <p>"Etienne AUJAMES &lt;eaujames@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49482" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49482</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15833" title="Don&#39;t use realpath in llapi_search_fsname." class="issue-link" data-issue-key="LU-15833"><del>LU-15833</del></a> llapi: don't use realpath in llapi_search_fsname()<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: 1<br/> Commit: 495386a7a373e0abad402ddcc012daeda8003e83</p> <p>"Jian Yu &lt;yujian@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49649" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49649</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15833" title="Don&#39;t use realpath in llapi_search_fsname." class="issue-link" data-issue-key="LU-15833"><del>LU-15833</del></a> llapi: don't use realpath in llapi_search_fsname()<br/> Project: fs/lustre-release<br/> Branch: b2_15<br/> Current Patch Set: 1<br/> Commit: 0d2f682c14ae17fe096f28ffb2191ead06100041</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49649/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49649/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15833" title="Don&#39;t use realpath in llapi_search_fsname." class="issue-link" data-issue-key="LU-15833"><del>LU-15833</del></a> llapi: don't use realpath in llapi_search_fsname()<br/> Project: fs/lustre-release<br/> Branch: b2_15<br/> Current Patch Set: <br/> Commit: 4b3f50d88d18a8c4a37c0de863a098141e2b84ab</p> Related Development Rank 1|i02pcv: Rank (Obsolete) 9223372036854775807