Good question, Ron. This is a case where LVMing the root can lead to pain. If the root is not LVMed, then you can follow Bernie's recipe. Easy! Otherwise (with logical volumes) you might have multiple PVs to attach ... and worse ... what if the volume groups collide? (same name - you can work around that, but it's tricky)
When Linux is virtualized, it makes a lot of sense to let the host handle volume manglement and not toss everything into LVM. (A mix is usually best, not all one or the other.) Certainly the sometime need of recovering your root FS makes the root a poor candidate for logical vol. Gary, for servicing a system like what you're asking about, I recommend that you pre-assign a range of addresses, places where you can plug-in a disk on-the-fly. (This is the kind of thing to be done ahead of the crisis.) Newer releases make this less necessary from a technical standpoint, but it still helps tremendously if you can visualize where you're attaching disks. My usual habit of a 1b0-1bf range for the primary system disks leads then to a 2b0-2bf range for "service" or other things. That's just one idea. 01xx and 11xx works too. -- R; <>< On Thu, Jun 25, 2009 at 09:49, Ron Foster at Baldor-IS<[email protected]> wrote: > Gary, > > I need a little more information on how your systems are set up. > > Are you using lvm for your operating system disk on instance a and > instance b? > > Ron > > Lee, Gary D. wrote: >> >> Under vm 5.3 both instances are suse sles10. >> >> Some one edited the /etc/inittab on instance A. >> >> How can we mount instance a's root fs to instance b so as to fix the >> inittab? >> Or, is there a better way? >> >> Thanks for any help. >> >> >> Gary Lee >> Senior System Programmer >> Ball State University >> phone: 765-285-1310 >> >> >> ---------------------------------------------------------------------- >> For LINUX-390 subscribe / signoff / archive access instructions, >> send email to [email protected] with the message: INFO LINUX-390 or >> visit >> http://www.marist.edu/htbin/wlvindex?LINUX-390 >> >> > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
