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-14928 Lustre <p>In a DNE system, it is not safe to do writeconf of a MD target and attempt to mount (and re-register) it again, as it creates weird MDT-MDT osp devices as "fsname-MDT0001-osp-MDT0001". But it would be nice to have such a possibility to fix a half-failed target registration, when MGS completes the registration process but the target fails with a timeout not knowing about registration success.</p> LU-14928

Allow MD target re-registered after writeconf

Bug Minor Resolved Fixed Alexander Zarochentsev Alexander Zarochentsev Wed, 11 Aug 2021 13:13:39 +0000 Thu, 7 Dec 2023 11:11:54 +0000 Wed, 25 Aug 2021 16:39:45 +0000 Lustre 2.15.0 0 4 <p>"Alexander Zarochentsev &lt;alexander.zarochentsev@hpe.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/44594" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/44594</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14928" title="Allow MD target re-registered after writeconf" class="issue-link" data-issue-key="LU-14928"><del>LU-14928</del></a> mgs: allow md target re-register<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 7223b7e6fb6925af05cade3699f73874fa5f4751</p> <p>here test conf-sanity 130 output w/o the fix:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>== conf-sanity test 130: re-register an MDT after writeconf ========================================== 16:02:19 (1628686939) start mds service on devvm1 Starting mds1: -o localrecov /dev/mapper/mds1_flakey /mnt/lustre-mds1 Started lustre-MDT0000 start mds service on devvm1 Starting mds2: -o localrecov /dev/mapper/mds2_flakey /mnt/lustre-mds2 Started lustre-MDT0001 devvm1: executing wait_import_state_mount FULL mdc.lustre-MDT0000-mdc-*.mds_server_uuid devvm1: executing wait_import_state_mount FULL mdc.lustre-MDT0001-mdc-*.mds_server_uuid stop mds service on devvm1 Stopping /mnt/lustre-mds2 (opts:-f) on devvm1 checking for existing Lustre data: found Read previous values: Target: lustre-MDT0001 Index: 1 Lustre FS: lustre Mount type: ldiskfs Flags: 0x1 (MDT ) Persistent mount opts: user_xattr,errors=remount-ro Parameters: mgsnode=192.168.56.101@tcp sys.timeout=20 mdt.identity_upcall=/work/git/lustre-wc-rel/lustre/tests/../utils/l_getidentity Permanent disk data: Target: lustre=MDT0001 Index: 1 Lustre FS: lustre Mount type: ldiskfs Flags: 0x101 (MDT writeconf ) Persistent mount opts: user_xattr,errors=remount-ro Parameters: mgsnode=192.168.56.101@tcp sys.timeout=20 mdt.identity_upcall=/work/git/lustre-wc-rel/lustre/tests/../utils/l_getidentity Writing CONFIGS/mountdata start mds service on devvm1 Starting mds2: -o localrecov /dev/mapper/mds2_flakey /mnt/lustre-mds2 Started lustre-MDT0001 16 UP osp lustre-MDT0001-osp-MDT0001 lustre-MDT0001-mdtlov_UUID 4 conf-sanity test_130: @@@@@@ FAIL: Illegal OSP device created Trace dump: = ./../tests/test-framework.sh:6221:error() = conf-sanity.sh:9259:test_130() = ./../tests/test-framework.sh:6524:run_one() = ./../tests/test-framework.sh:6571:run_one_logged() = ./../tests/test-framework.sh:6398:run_test() = conf-sanity.sh:9262:main() Dumping lctl log to /tmp/test_logs/1628686868/conf-sanity.test_130.*.1628686959.log Dumping logs only on local client. Resetting fail_loc on all nodes...done. FAIL 130 (30s) [root@devvm1 tests]# </pre> </div></div> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/44594/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/44594/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14928" title="Allow MD target re-registered after writeconf" class="issue-link" data-issue-key="LU-14928"><del>LU-14928</del></a> mgs: allow md target re-register<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: e4f3f47f04c762770bc36c1e3fa7e92e94a36704</p> <p>Landed for 2.15</p> Related LU-4966 LU-17240 Development Rank 1|i021hz: Rank (Obsolete) 9223372036854775807 Severity