I thought that they would be mounted in the order that you ran dasd_configure. That's how SLES 10 worked, so I presumed that SLES 11 works this way, but some testing shows that it doesn't. On my system, the root volume is always dasda, then it seems to mount them in the order the files appear in /etc/udev/rules.d - but one boot I just did wasn't quite in this order. On SLES 10, you ran mkinitrd which saved the activation order in the initrd. SLES 11 doesn't store this in the initrd. The initrd activates the root device then reads the rest of the udev rules from it. (I don't know how it behaves if the root device is in an LVM. I don't set up my systems that way.)
I think the real answer is to always use /dev/disk/by-path (best for virtual device numbers under VM) or /dev/disk/by-id (to use the volume labels) to refer to disks. LVM should scan all disks and look for an LVM signature, so it shouldn't care what dasd letter they are mounted with. On Tue, Apr 7, 2009 at 12:57 PM, Mark Pace <[email protected]> wrote: > Well that fixed the problem of the device not coming online at IPL. But now > all the dasd labels have been changed. > 0200 was dasda now dasdc > 0201 was dasdb now dasdd > 0202 was dasdc now dasda > 0203 was dasdd now dasdb > > root dasd mounts fine because it is mounted "by-path", but the swap disk > were by /dev/dasdx1 and now obviously that is incorrect. Also the LVM > doesn't mount as 0203 is no longer /dev/dasdd1. > > What, now, determines the order? > > > > > -- > Mark Pace > Mainline Information Systems > 1700 Summit Lake Drive > Tallahassee, FL. 32317 > > ---------------------------------------------------------------------- > 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 > -- Bruce Hayden Linux on System z Advanced Technical Support IBM, Endicott, NY ---------------------------------------------------------------------- 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
