https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265820#M333497 Hi<BR /><BR />I am confused! We've migrated 3 volume groups from one machine to another, that was some months ago...<BR />Now I wanted to erase the vgs information from the original machine and I made a vgreduce instead of a vgexport. In the target machine the disks stayed unavailable on one of the 3 vg and the database stoped.<BR />My questions are:<BR />- Why the disks stayed unavailable only in one of the vgs?<BR />- Can I recover from this with a vgcfgrestore? If so, should I do it on the target or on the original machine?<BR />I hope someone had experienced a situation like this and can help me here.<BR /><BR />Thanks in advance,<BR />R<BR /> Tue, 09 Sep 2008 16:24:15 GMT Ramones 2008-09-09T16:24:15Z https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265820#M333497 Hi<BR /><BR />I am confused! We've migrated 3 volume groups from one machine to another, that was some months ago...<BR />Now I wanted to erase the vgs information from the original machine and I made a vgreduce instead of a vgexport. In the target machine the disks stayed unavailable on one of the 3 vg and the database stoped.<BR />My questions are:<BR />- Why the disks stayed unavailable only in one of the vgs?<BR />- Can I recover from this with a vgcfgrestore? If so, should I do it on the target or on the original machine?<BR />I hope someone had experienced a situation like this and can help me here.<BR /><BR />Thanks in advance,<BR />R<BR /> Tue, 09 Sep 2008 16:24:15 GMT https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265820#M333497 Ramones 2008-09-09T16:24:15Z https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265821#M333498 &gt; We've migrated 3 volume groups from one machine to another, that was some months ago...<BR />These VGs were not completely migrated if they were still connected to the original server. Leaving them still connected to the original server was a very bad thing. When you move disks from one server to another first you vgexport and then you disconnect them from one server and connect them to another.<BR /><BR />&gt;Why the disks stayed unavailable only in one of the vgs<BR />Probably becasue the disks of the other VGs were not visible on the original server.<BR /><BR />&gt; Can I recover...<BR />Yes. If you have a saved vgXX.conf file on the new server you should do it on the new server and forget about the original one. Tue, 09 Sep 2008 16:47:49 GMT https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265821#M333498 TTr 2008-09-09T16:47:49Z https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265822#M333499 is there only one disk in each vg? did you run vgreduce on only one vg? If so that would be why the other vg's were ok. can you post a vggisplay -v <VG> from the target?</VG> Tue, 09 Sep 2008 16:49:48 GMT https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265822#M333499 Court Campbell 2008-09-09T16:49:48Z https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265823#M333500 Hi<BR /><BR />We've managed to recover with vgcfgrestore. I know we should had disconnect the disks and made vgexport when we've migrated the vgs. The thing is we may need a roolback the day after...and we make alot of things in alot of machines at the same time...it was a mistake, it happens...the good news is that we could recover.<BR />Thanks anyway...<BR />R Tue, 09 Sep 2008 17:54:58 GMT https://community.hpe.com/t5/operating-system-hp-ux/lvm-problem/m-p/4265823#M333500 Ramones 2008-09-09T17:54:58Z