Sorry I didn't reply to this sooner, but others got you on the right track. As it turns out, my problem had nothing to do with Linux, but rather with CP and the IBM Shark unit that my DASD was on. The z/VM systems programmer has opened up a PMR with IBM about it. The systems programmer had some automatic disk copies set up for backup purposes. CP allowed them to specify a target volume that was on a different Shark unit from the source volume, which is a no-no. What resulted was a seemingly random over-writing of my Linux data with something else, killing the vgscan and hence my VG and LVs.
Mark Post -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of MOEUR TIM C Sent: Thursday, February 09, 2006 1:38 PM To: [email protected] Subject: LVM, SLES9 and 64 bit Hello all, I've been fighting an LVM problem and searching through the archives and I stumbled on this from Mark Post from a while back: Re: /tmp as a logical volume Post, Mark K Tue, 21 Jun 2005 21:35:24 -0700 >I'm beginning to have doubts about LVM (version 1 at least) on 64-bit > systems. I've had two cases where my volume groups have disappeared after an > IPL, and hence all my logical volumes. Emails to the linux-lvm mailing list > have gone unanswered. I don't know if it's because I'm running Linux/390, > LVM 1 or what. Having said that, if you're going to use LVM, using it for > /tmp is certainly the safest. According to the FHS, the contents of /tmp are > not guaranteed across a reboot anyway. This describes my troubles exactly, I create some LVM volume groups (and logical volumes), but they don't survive through an IPL. What I haven't been able to find is any resolution of this problem. What makes it worse, is that I've done it successfully with other volume groups. Mark (or anybody else that shares my woes), have you found any more information about this? Tim [EMAIL PROTECTED] ---------------------------------------------------------------------- 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
