I meant unmount it from the system you were trying to recover it from -- cuz you needed to mount is as an LVM -- not as a filesystem. But - the duplicate vg apparently would have stopped you. I forgot about the SINGLE parm -- nice one.
Couple recommendations: - ensure /etc/zipl.conf has the correct menu listings - and issue 'zipl' without the -X option.. hopefully that gives you the boot menu back -- but maybe you don't want it now that you have the magic incantation. - you may want to define yourself a recovery server that doesn't use LVM -- just have a minimal system on a single minidisk. avoid volume group name conflicts completely. Only bring it up when needed. Scott Rohling On Sat, Jun 25, 2011 at 3:46 PM, Donald Russell <russell....@gmail.com>wrote: > Thanks Scott.... There are other files systems that also use LVM, but I > know > the root file system is all on the 100 disk only. > > I can't actually unmount anything... but I can shut the whole server down > and log it off. > On my healthy system I can attach (link) the disk, but that's where you're > saying I'll have a name conflict because there will already be rootvg > volume > group. > > <Interrupted ... > > > Solved: > #CP 100 PARM SINGLE > > Whuwho! I'm in and problem fixed. > > > On Sat, Jun 25, 2011 at 13:48, Scott Rohling <scott.rohl...@gmail.com > >wrote: > > > If it's really a single disk LVM -- unmount it.. You need to do a > pvscan, > > vgscan, and then vgchange -ay volume-group.. then mount > > /dev/volume-group/logical-volume. And if your other server already > uses > > the same volume-group name - you will have to rename it before you can > > activate the new one. (if the lvm consists of more than the 100 disk - > > you > > need to link and activate those too..) > > > > Sounds like you did a zipl -X at some point, which eliminates the startup > > menu.. > > > > Good luck! > > > > Scott Rohling > > > > On Sat, Jun 25, 2011 at 2:11 PM, Donald Russell <russell....@gmail.com > > >wrote: > > > > > RHEL 5.6 on zVM 6.1 > > > > > > I made a change to /etc/pam.d/system-auth and didn't test it before > > logging > > > off again. :-( > > > > > > Now, nobody can logon because they get an error, "Module not found". (I > > > must > > > have fat-fingered the module name I was adding. > > > > > > OK, no big deal, signal shutdown user x within 300 to bring the server > > down > > > and reboot in single user mode.... > > > > > > Except.... the server doesn't stop at the usual prompt asking what to > > boot, > > > it just comes up. (Normally that's when I would say #CP VI VMSG 0 1 to > > come > > > up in single user mode... > > > > > > So, I tried shutting it down and logging off, then attach the 100 mdisk > > > (boot and root file systems) to another running zLinux system. > > > > > > From the running zLinux system I linked to the other 100 disk in write > > mode > > > (while its proper owner was logged off) and tried to mount the > partition > > at > > > /mnt... where I thought I could then correct the bad file. > > > > > > I said mount /dev/dasdm2 /mnt and was told I had to specify the file > > system > > > type.... > > > mount -t ext3 /dev/dasdm2 /mnt > > > Nope... it says it can't find an ext3 file system there. > > > > > > I have no reason to think the data is damaged in anyway... but it is > also > > > an > > > LVM disk.... > > > > > > So, I'm looking for some help in how to recover from this snafu. :-) > > > > > > Thank you > > > > > > ---------------------------------------------------------------------- > > > For LINUX-390 subscribe / signoff / archive access instructions, > > > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 > or > > > visit > > > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > > ---------------------------------------------------------------------- > > > For more information on Linux on System z, visit > > > http://wiki.linuxvm.org/ > > > > > > > ---------------------------------------------------------------------- > > For LINUX-390 subscribe / signoff / archive access instructions, > > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > > visit > > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > ---------------------------------------------------------------------- > > For more information on Linux on System z, visit > > http://wiki.linuxvm.org/ > > > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- > For more information on Linux on System z, visit > http://wiki.linuxvm.org/ > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
