{"id":277,"date":"2012-10-02T14:04:10","date_gmt":"2012-10-02T19:04:10","guid":{"rendered":"http:\/\/www.hpux.ws\/?p=277"},"modified":"2012-10-02T14:04:10","modified_gmt":"2012-10-02T19:04:10","slug":"how-to-not-blow-up-a-vxvm-boot-hp-ux-system-when-breaking-the-mirror","status":"publish","type":"post","link":"https:\/\/www.hpux.ws\/?p=277","title":{"rendered":"How to not blow up a vxvm boot HP-UX system when breaking the mirror"},"content":{"rendered":"

This is an improvement to fixing the problems if you do blow things up. Click here<\/a> to see.<\/p>\n

Here is the thing. VXvM is messed up on HP-UX. The mirror break command is broken on 11.23 and 11.31.<\/p>\n

That being said depending on how you use it, you can have a mess to clean up or not.<\/p>\n

Scenario:<\/p>\n

[shmuel01]\/root # vxdisk list
\nDEVICE TYPE DISK GROUP STATUS<\/strong>
\nc2t0d0 auto:hpdisk rootdisk02 rootdg online failing<\/strong>
\nc2t1d0 auto:hpdisk rootdisk01 rootdg online failing<\/strong><\/h4>\n

…<\/p>\n

Note the disks are supposedly failing. Easy fix, though I can’t say how long this will last.<\/p>\n

[shmuel01]\/root # vxedit -g rootdg set failing=off rootdisk01<\/strong>
\n[shmuel01]\/root # vxedit -g rootdg set failing=off rootdisk02<\/strong><\/h4>\n

Now we look at them.<\/p>\n

[shmuel01]\/root # vxdisk list<\/strong>
\nDEVICE TYPE DISK GROUP STATUS<\/strong>
\nc2t0d0 auto:hpdisk rootdisk02 rootdg online<\/strong>
\nc2t1d0 auto:hpdisk rootdisk01 rootdg online<\/strong><\/h4>\n

Now they are fixed.<\/p>\n

Now to the heart of the matter. Lets say you want to break c2t0d0 out of the mirror and say make a drd image. The man page and HP\u00a0support\u00a0says you can use this form.<\/p>\n

\/etc\/vx\/bin\/vxbrk_rootmir -g rootdg -vb c2t0d0<\/strong><\/h4>\n

If you use that form on many HP-UX systems the mirror break will fail and you will have a mess to clean up. If you want to prove your skills go ahead and use that form and click the link above to find the fix.<\/p>\n

If you would rather look smart and say cruise the Internet, do this form.<\/p>\n

\/etc\/vx\/bin\/\/vxbrk_rootmir -g rootdg -vb rootdisk02<\/strong><\/h4>\n

You get the following UGLY results.<\/p>\n

[shmuel01]\/root # \/etc\/vx\/bin\/\/vxbrk_rootmir -g rootdg -vb rootdisk02<\/strong>
\nVxVM vxbrk_rootmir INFO V-5-2-4023 14:23: Checking specified disk(s) for presence and type<\/strong>
\nVxVM vxbrk_rootmir INFO V-5-2-4025 14:23: DA c2t0d0, DM rootdisk02 is a valid root mirror<\/strong>
\nVxVM vxbrk_rootmir INFO V-5-2-4052 14:23: Saving configuration data for later restoration<\/strong>
\nsed: Function s\/plex=.*$\/plex=homevol-02 cannot be parsed.<\/strong>
\nsed: Function s\/plex=.*$\/plex=lpvol-02 cannot be parsed.<\/strong>
\nsed: Function s\/plex=.*$\/plex=optvol-02 cannot be parsed.<\/strong>
\nsed: Function s\/plex=.*$\/plex=standvol-02 cannot be parsed.<\/strong>
\nsed: Function s\/plex=.*$\/plex=tmpvol-02 cannot be parsed.<\/strong>
\nsed: Function s\/plex=.*$\/plex=usrvol-02 cannot be parsed.<\/strong>
\nsed: Function s\/plex=.*$\/plex=varvol-02 cannot be parsed.<\/strong>
\nVxVM vxbrk_rootmir INFO V-5-2-4022 14:23: Breaking off root mirror on DA c2t0d0<\/strong>
\nVxVM vxbrk_rootmir INFO V-5-2-4054 14:23: Setting broken off mirror on c2t0d0 as unique root disk<\/strong>
\nVxVM vxbrk_rootmir INFO V-5-2-2566 14:23: Preparing disk c2t0d0 as a VxVM root disk<\/strong>
\nVxVM vxmake ERROR V-5-1-1173 Volume swvol already exists<\/strong>
\nVxVM vxbrk_rootmir ERROR V-5-2-4020 Attempting to recreate volume meta-data on rootdisk02\/c2t0d0<\/strong><\/h4>\n

However the only thing that actually goes wrong is removing the disk rootdisk02 from the roodg.<\/p>\n

Easily fixed with a single command.<\/p>\n

vxdg -g rootdg rmdisk rootdisk02<\/strong><\/p>\n

vxdisk list shows:<\/p>\n

[shmuel01]\/root # vxdisk list<\/strong>
\nDEVICE TYPE DISK GROUP STATUS<\/strong>
\nc2t0d0 auto:hpdisk – – online<\/strong>
\nc2t1d0 auto:hpdisk rootdisk01 rootdg online<\/strong><\/h4>\n

A healthy ready for DRD cloning rootdg<\/p>\n

[shmuel01]\/root # vxprint -ht -g rootdg<\/strong>
\nDG NAME NCONFIG NLOG MINORS GROUP-ID<\/strong>
\nST NAME STATE DM_CNT SPARE_CNT APPVOL_CNT<\/strong>
\nDM NAME DEVICE TYPE PRIVLEN PUBLEN STATE<\/strong>
\nRV NAME RLINK_CNT KSTATE STATE PRIMARY DATAVOLS SRL<\/strong>
\nRL NAME RVG KSTATE STATE REM_HOST REM_DG REM_RLNK<\/strong>
\nCO NAME CACHEVOL KSTATE STATE<\/strong>
\nVT NAME NVOLUME KSTATE STATE<\/strong>
\nV NAME RVG\/VSET\/CO KSTATE STATE LENGTH READPOL PREFPLEX UTYPE<\/strong>
\nPL NAME VOLUME KSTATE STATE LENGTH LAYOUT NCOL\/WID MODE<\/strong>
\nSD NAME PLEX DISK DISKOFFS LENGTH [COL\/]OFF DEVICE MODE<\/strong>
\nSV NAME PLEX VOLNAME NVOLLAYR LENGTH [COL\/]OFF AM\/NM MODE<\/strong>
\nSC NAME PLEX CACHE DISKOFFS LENGTH [COL\/]OFF DEVICE MODE<\/strong>
\nDC NAME PARENTVOL LOGVOL<\/strong>
\nSP NAME SNAPVOL DCO<\/strong><\/h4>\n

dg rootdg default default 0 1129312400.1025.loopback<\/strong><\/h4>\n

dm rootdisk01 c2t1d0 auto 1024 143364644 –<\/strong><\/h4>\n

v homevol – ENABLED ACTIVE 524288 SELECT – fsgen<\/strong>
\npl homevol-01 homevol ENABLED ACTIVE 524288 CONCAT – RW<\/strong>
\nsd rootdisk01-04 homevol-01 rootdisk01 9961472 524288 0 c2t1d0 ENA<\/strong>
\npl homevol-04 homevol ENABLED ACTIVE LOGONLY CONCAT – RW<\/strong>
\nsd rootdisk01-14 homevol-04 rootdisk01 35389473 33 LOG c2t1d0 ENA<\/strong><\/h4>\n

v lpvol – ENABLED ACTIVE 524288 SELECT – fsgen<\/strong>
\npl lpvol-01 lpvol ENABLED ACTIVE 524288 CONCAT – RW<\/strong>
\nsd rootdisk01-12 lpvol-01 rootdisk01 34865152 524288 0 c2t1d0 ENA<\/strong>
\npl lpvol-04 lpvol ENABLED ACTIVE LOGONLY CONCAT – RW<\/strong>
\nsd rootdisk01-16 lpvol-04 rootdisk01 35389572 33 LOG c2t1d0 ENA<\/strong><\/h4>\n

v optvol – ENABLED ACTIVE 4194304 SELECT – fsgen<\/strong>
\npl optvol-01 optvol ENABLED ACTIVE 4194304 CONCAT – RW<\/strong>
\nsd rootdisk01-05 optvol-01 rootdisk01 10485760 4194304 0 c2t1d0 ENA<\/strong>
\npl optvol-04 optvol ENABLED ACTIVE LOGONLY CONCAT – RW<\/strong>
\nsd rootdisk01-17 optvol-04 rootdisk01 35389605 66 LOG c2t1d0 ENA<\/strong><\/h4>\n

v rootvol – ENABLED ACTIVE 1048576 ROUND – root<\/strong>
\npl rootvol-01 rootvol ENABLED ACTIVE 1048576 CONCAT – RW<\/strong>
\nsd rootdisk01-03 rootvol-01 rootdisk01 8912896 1048576 0 c2t1d0 ENA<\/strong><\/h4>\n

v standvol – ENABLED ACTIVE 524288 ROUND – fsgen<\/strong>
\npl standvol-01 standvol ENABLED ACTIVE 524288 CONCAT – RW<\/strong>
\nsd rootdisk01-01 standvol-01 rootdisk01 0 524288 0 c2t1d0 ENA<\/strong>
\npl standvol-04 standvol DETACHED ACTIVE LOGONLY CONCAT – RW<\/strong>
\nsd rootdisk01-18 standvol-04 rootdisk01 35389671 33 LOG c2t1d0 ENA<\/strong><\/h4>\n

v swapvol – ENABLED ACTIVE 8388608 ROUND – swap<\/strong>
\npl swapvol-01 swapvol ENABLED ACTIVE 8388608 CONCAT – RW<\/strong>
\nsd rootdisk01-02 swapvol-01 rootdisk01 524288 8388608 0 c2t1d0 ENA<\/strong><\/h4>\n

v swvol – ENABLED ACTIVE 6291456 SELECT – fsgen<\/strong>
\npl swvol-01 swvol ENABLED ACTIVE 6291456 CONCAT – RW<\/strong>
\nsd rootdisk01-10 swvol-01 rootdisk01 27525120 6291456 0 c2t1d0 ENA<\/strong>
\npl swvol-03 swvol ENABLED ACTIVE LOGONLY CONCAT – RW<\/strong>
\nsd rootdisk01-06 swvol-03 rootdisk01 35389440 33 LOG c2t1d0 ENA<\/strong><\/h4>\n

v tmpvol – ENABLED ACTIVE 2097152 SELECT – fsgen<\/strong>
\npl tmpvol-01 tmpvol ENABLED ACTIVE 2097152 CONCAT – RW<\/strong>
\nsd rootdisk01-07 tmpvol-01 rootdisk01 14942208 2097152 0 c2t1d0 ENA<\/strong>
\npl tmpvol-04 tmpvol ENABLED ACTIVE LOGONLY CONCAT – RW<\/strong>
\nsd rootdisk01-20 tmpvol-04 rootdisk01 35389737 33 LOG c2t1d0 ENA<\/strong><\/h4>\n

v usrvol – ENABLED ACTIVE 5242880 SELECT – fsgen<\/strong>
\npl usrvol-01 usrvol ENABLED ACTIVE 5242880 CONCAT – RW<\/strong>
\nsd rootdisk01-08 usrvol-01 rootdisk01 17039360 5242880 0 c2t1d0 ENA<\/strong>
\npl usrvol-04 usrvol ENABLED ACTIVE LOGONLY CONCAT – RW<\/strong>
\nsd rootdisk01-21 usrvol-04 rootdisk01 35389770 66 LOG c2t1d0 ENA<\/strong><\/h4>\n

v varvol – ENABLED ACTIVE 5242880 SELECT – fsgen<\/strong>
\npl varvol-01 varvol ENABLED ACTIVE 5242880 CONCAT – RW<\/strong>
\nsd rootdisk01-09 varvol-01 rootdisk01 22282240 5242880 0 c2t1d0 ENA<\/strong>
\npl varvol-04 varvol ENABLED ACTIVE LOGONLY CONCAT – RW<\/strong>
\nsd rootdisk01-22 varvol-04 rootdisk01 35389836 66 LOG c2t1d0 ENA<\/strong><\/h4>\n","protected":false},"excerpt":{"rendered":"

This is an improvement to fixing the problems if you do blow things up. Click here to see. Here is the thing. VXvM is messed up on HP-UX. The mirror break command is broken on 11.23 and 11.31. That being said depending on how you use it, you can have a mess to clean up […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_kadence_starter_templates_imported_post":false,"footnotes":""},"categories":[7,8,51],"tags":[71,70,69,68],"class_list":["post-277","post","type-post","status-publish","format-standard","hentry","category-lvm","category-sysadmin","category-vxvm-veritas-volume-manager","tag-how-to-break-up-a-vxvm-mirror-without-blowing-up-your-rootdg","tag-mirror-break","tag-vxvm","tag-vxvm-mirror-break"],"_links":{"self":[{"href":"https:\/\/www.hpux.ws\/index.php?rest_route=\/wp\/v2\/posts\/277"}],"collection":[{"href":"https:\/\/www.hpux.ws\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hpux.ws\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hpux.ws\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hpux.ws\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=277"}],"version-history":[{"count":2,"href":"https:\/\/www.hpux.ws\/index.php?rest_route=\/wp\/v2\/posts\/277\/revisions"}],"predecessor-version":[{"id":279,"href":"https:\/\/www.hpux.ws\/index.php?rest_route=\/wp\/v2\/posts\/277\/revisions\/279"}],"wp:attachment":[{"href":"https:\/\/www.hpux.ws\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hpux.ws\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=277"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hpux.ws\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}