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-14490 Lustre <p>Striped directory as subdirectory mount may not be able to cache LOOKUP lock for ROOT, and will cause extra getattr RPC for each file access. This is a bug in lmv_intent_lookup(), which replaces fid1 with stripe FID which "/" is mapped to by hash, while for striped directory, fid2 is master object FID, if they are not located on the same MDT, server will treat it as remote object, and won't reply LOOKUP lock back.</p> <p>Note, even if this is fixed, user should avoid use remote directory (either plain or striped directory) as subdirectory mount, because remote object can't fetch LOOKUP lock.</p> LU-14490

extra getattr RPC if striped directory as subdirectory mount

Bug Minor Resolved Fixed Lai Siyao Lai Siyao Fri, 5 Mar 2021 09:06:13 +0000 Fri, 4 Mar 2022 04:53:31 +0000 Mon, 22 Mar 2021 18:39:53 +0000 Lustre 2.12.7 Lustre 2.15.0 0 4 <p>Lai Siyao (lai.siyao@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/41893" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/41893</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14490" title="extra getattr RPC if striped directory as subdirectory mount " class="issue-link" data-issue-key="LU-14490"><del>LU-14490</del></a> lmv: striped directory as subdirectory mount<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 102267b08a90faabc43ed97b9e6c89b2d60272ac</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/41893/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/41893/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14490" title="extra getattr RPC if striped directory as subdirectory mount " class="issue-link" data-issue-key="LU-14490"><del>LU-14490</del></a> lmv: striped directory as subdirectory mount<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 775f88ed6c8b6235031268e258e15da405a5b955</p> <p>Lai Siyao (lai.siyao@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/42046" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/42046</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14490" title="extra getattr RPC if striped directory as subdirectory mount " class="issue-link" data-issue-key="LU-14490"><del>LU-14490</del></a> lmv: striped directory as subdirectory mount<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: 1<br/> Commit: 60d48d4d9458d3341ee456e81e8be2fe76f1b24a</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/42046/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/42046/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14490" title="extra getattr RPC if striped directory as subdirectory mount " class="issue-link" data-issue-key="LU-14490"><del>LU-14490</del></a> lmv: striped directory as subdirectory mount<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: <br/> Commit: 1d3941011bb8a7436f724bc83cf33e6a45eff15e</p> <p>Landed for 2.15 and 2.12.7</p> Related Development Rank 1|i01omf: Rank (Obsolete) 9223372036854775807 Severity