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-17395 Lustre <p>$ git log --oneline -n3<br/> d43e8b471f (HEAD -&gt; df_noenf, tag: v2_15_60, tag: 2.15.60, origin/master, origin/HEAD) New tag 2.15.60<br/> 54d8859bef <a href="https://jira.whamcloud.com/browse/LU-17215" title="sanity/398q should use $tfile" class="issue-link" data-issue-key="LU-17215"><del>LU-17215</del></a> tests: sanity/398q to use $tfile<br/> 7a56a689d4 <a href="https://jira.whamcloud.com/browse/LU-17374" title="Do not slow down GSS authentication with many cache entries" class="issue-link" data-issue-key="LU-17374"><del>LU-17374</del></a> gss: get rid of rsi cache entries after req handle<br/> $ MDSCOUNT=2 FSTYPE=ldiskfs bash lustre/tests/llmount.sh <br/> $ lfs project -sp 1212 /mnt/lustre<br/> $ lfs setquota -p 1212 -b 10M -B 10M -i 10K -I 10K /mnt/lustre<br/> $ df -h /mnt/lustre<br/> Filesystem Size Used Avail Use% Mounted on<br/> 10.0.2.15@tcp:/lustre 10M 4.0K 10M 1% /mnt/lustre<br/> $ lfs project -d /mnt/lustre<br/> 1212 P /mnt/lustre<br/> $ lfs project -sp 0 /mnt/lustre<br/> $ df -h /mnt/lustre<br/> Filesystem Size Used Avail Use% Mounted on<br/> 10.0.2.15@tcp:/lustre 612M 3.0M 556M 1% /mnt/lustre<br/> $ lctl get_param osd-ldiskfs.*.quota_slave.info | grep enabled<br/> quota enabled: none<br/> quota enabled: none<br/> quota enabled: none<br/> quota enabled: none</p> LU-17395

df -h is limited by project quota even if quota enforcement is disabled

Bug Major Open Unresolved WC Triage Alexander Boyko Thu, 4 Jan 2024 15:36:00 +0000 Thu, 11 Jan 2024 11:52:13 +0000 Lustre 2.16.0 0 3 <p>It seems like a bug that <tt>statfs()</tt> is affected if project quota is not enforced. Is there some way that <tt>ll_statfs_project()-&gt;quotactl_ioctl()</tt> can determine that quota is not enforced?</p> <p>The solution of this problem could be common with <a href="https://jira.whamcloud.com/browse/LU-16660" title="don&#39;t show grace time if this quota type is disabled" class="issue-link" data-issue-key="LU-16660">LU-16660</a>. In my case I also wanted to know whether quotas enforced or not. The problem is that to be 100% sure that quotas are disabled we need to ask all "quota slaves", i.e. all OSTs and MDTs. It is too expensive to ask all targets, so probably it is worth to have some common flag on MDS0 that is set to "TRUE" only when quota on all targets is disabled(quota_slave=none). </p> <p>In <a href="https://jira.whamcloud.com/browse/LU-16771" title="statfs_max_age not used with statfs() project quotas?" class="issue-link" data-issue-key="LU-16771">LU-16771</a> there was also a performance issue related to an application getting the project quota repeatedly due to many <tt>statfs()</tt> syscalls, and no cache for the project quota on the clients. I think it is reasonable to cache the "quota enabled/disabled" state on the client and MDS, along with the quota usage for an ID+type for a short time (same as statfs), as long as these are not used to make actual decisions about IO. For these cases, the values are mostly cosmetic, so caching them for a few seconds is fine.</p> <p>There would need to be a tunable like "<tt>enable_quota_cache=0</tt>" to disable the cache for sanity-quota to work properly when fetching the quota, or in case of problems in the field.</p> Related LU-16660 LU-16771 LU-15721 LU-9555 Development Rank 1|i046c7: Rank (Obsolete) 9223372036854775807 Severity