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-6116 Lustre <p>I tried to run racer with single MDT, and the system can not be umounted after racer.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[root@testnode tests]# MDSCOUNT=4 sh llmountcleanup.sh Stopping clients: testnode /mnt/lustre (opts:-f) Stopping client testnode /mnt/lustre opts:-f /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second /mnt/lustre is still busy, wait one second </pre> </div></div> LU-6116

file system can not be umounted after racer.

Bug Minor Closed Not a Bug WC Triage Di Wang Wed, 14 Jan 2015 06:08:25 +0000 Thu, 15 Jan 2015 00:33:34 +0000 Wed, 14 Jan 2015 22:52:29 +0000 Lustre 2.7.0 0 4 <p>did you check if there are lot of process sleeping after racer run? In that case, you may hit <a href="https://jira.whamcloud.com/browse/LU-6095" title="racer.sh should propagate $TRUNCATE to remote clients" class="issue-link" data-issue-key="LU-6095"><del>LU-6095</del></a>.</p> <p>Are you working on <a href="https://jira.whamcloud.com/browse/LU-6088" title="racer test_1: dir_create.sh mutex deadlock in sys_open-&gt;do_lookup" class="issue-link" data-issue-key="LU-6088"><del>LU-6088</del></a>?</p> <p>No, I did not see any threads left. Yes, 6088, 4712 and several other tickets found during racer.</p> <p>You used MDSCOUNT=4 above. Are you sure about the single MDT?</p> <p>There was a bug which leaked a mount reference from sys_link() in one of the RHEL 6.* kernels. What kernel version are you using?</p> <p>I run single mdt configuration all the time in a loop and have zero problems in unmount.<br/> I am also suspicious of MDSCOUNT=4</p> <p>Sorry, I posted the wrong console message here. But I did try racer with single MDT to see if this is specially for DNE, and I did see this on single MDT as well. I used linux-2.6.32-431.3.1.el6.x86_64.</p> <p>Though I run racer with this change as John suggested. Anyway I will check again. </p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>diff --git a/lustre/tests/racer/file_create.sh b/lustre/tests/racer/file_create.sh index e615365..8d565a4 100755 --- a/lustre/tests/racer/file_create.sh +++ b/lustre/tests/racer/file_create.sh @@ -9,7 +9,8 @@ OSTCOUNT=${OSTCOUNT:-$(lfs df $DIR 2&gt; /dev/null | grep -c OST)} while /bin/true ; do file=$((RANDOM % MAX)) # $RANDOM is between 0 and 32767, and we want $blockcount in 64kB units - blockcount=$((RANDOM * MAX_MB / 32 / 64)) +# blockcount=$((RANDOM * MAX_MB / 32 / 64)) + blockcount=$((RANDOM % 4)) stripecount=$((RANDOM % (OSTCOUNT + 1))) [ $OSTCOUNT -gt 0 ] &amp;&amp; lfs setstripe -c $stripecount $DIR/$file 2&gt; /dev/null diff --git a/lustre/tests/racer/racer.sh b/lustre/tests/racer/racer.sh index deef18e..bb9b4ac 100755 --- a/lustre/tests/racer/racer.sh +++ b/lustre/tests/racer/racer.sh @@ -12,12 +12,11 @@ NUM_THREADS=${NUM_THREADS:-3} mkdir -p $DIR -RACER_PROGS="file_create dir_create file_rm file_rename file_link file_symlink \ -file_list file_concat file_exec file_chown file_chmod file_mknod file_truncate \ -file_delxattr file_getxattr file_setxattr" +RACER_PROGS="file_create dir_create file_rm file_link file_symlink \ +file_list file_concat file_exec file_chown file_chmod file_mknod file_truncate" if [ $MDSCOUNT -gt 1 ]; then - RACER_PROGS="${RACER_PROGS} dir_remote dir_migrate" + RACER_PROGS="${RACER_PROGS} dir_remote" fi racer_cleanup() </pre> </div></div> <p>Try removing file_link from RACER_PROGS.</p> <p>2.6.32-431.3.1.el6 leaks paths in the -ESTALE retry case in sys_unlinkat(). Please update your kernel and reopen if you still see this behavior.</p> <p>Yes, upgrading to 2.6.32-504.3.3.el6 fix this problem. Thanks.</p> Development Rank 1|hzx3vz: Rank (Obsolete) 17037 Severity