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-16494 Lustre <p>Some operations by FID, such as <tt>lfs rmfid</tt>, must be aware of subdirectory mount (fileset) so that they do not operate on files that are outside of the namespace currently mounted by the client.</p> LU-16494

Check fileset for operations by fid

Bug Minor Resolved Fixed Sebastien Buisson Sebastien Buisson patch sec Thu, 19 Jan 2023 17:07:08 +0000 Tue, 25 Apr 2023 03:43:05 +0000 Tue, 14 Feb 2023 13:31:27 +0000 Lustre 2.16.0 Lustre 2.16.0 0 6 <p>"Sebastien Buisson &lt;sbuisson@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49696" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49696</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-16494" title="Check fileset for operations by fid" class="issue-link" data-issue-key="LU-16494"><del>LU-16494</del></a> fileset: check fileset for operations by fid<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 77bdcc905df478bc844444b4c5150f519bcab634</p> <p>IMO, this kills the idea of a cheap way to remove files skipping full path traversal.</p> <p>That is indeed a drawback of this new capability. But because of DNE, this fileset check cannot be done on server side, as the full path to the subdirectory used as client fileset can be "spread" across multiple MDTs. <br/> Please note that in order to mitigate this drawback, the capability is disabled by default, and can be enabled per client mount point.</p> <p>filesets aren't totally isolated, right? we can't really prevent, for example, hardlinks between filesets?</p> <p>In a subdirectory mount, you can indeed have a file that has a hard link outside of the subdirectory mount. But I can see no problem with that. And if a file inside a subdirectory mount is a soft link to a file outside of the subdirectory mount, then the link cannot be followed.</p> <p>I'm not saying hardlinks is a problem, but I tend to think that given the filesets aren't totally isolated means that we probably don't need that check in rmfid.</p> <p>"Sebastien Buisson &lt;sbuisson@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49802" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49802</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-16494" title="Check fileset for operations by fid" class="issue-link" data-issue-key="LU-16494"><del>LU-16494</del></a> fileset: debug patch<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 7bfac333e772f0c525c8c312152e2be5da179542</p> <p>Site which want isolation of data sets will not use filesets if they are not totally isolated.</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49696/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49696/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-16494" title="Check fileset for operations by fid" class="issue-link" data-issue-key="LU-16494"><del>LU-16494</del></a> fileset: check fileset for operations by fid<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 9a72c073d33b0454229402c0cc930dc4e796107b</p> <p>Landed for 2.16</p> Related LU-8585 Development Rank 1|i03anb: Rank (Obsolete) 9223372036854775807 Severity