On Tue, 2015-03-17 at 20:20 -0400, S.Tindall wrote: > On Tue, 2015-03-17 at 23:28 +0100, johan.vermeulen7 at telenet.be wrote: > > > > on a Centos5 system installed with software raid I'm getting: > > > > raid1: raid set md127 active with 2 out of 2 mirrors > > > > md:.... autorun DONE > > > > md: Autodetecting RAID arrays > > > > md: autorun..... > > > > md : autorun DONE > > > > trying to resume form /dev/md1 > > Hi Johan, > > Your system is assembling md127, but is apparently expecting md1. > > I suspect that you examined the raid1 from a previously working EL5 > system using a more-recent-than-EL5 LiveDVD, which assembled the raid1 > as md127 and wrote super-minor 127 to the raid1 (assuming ver. 0.90 > metadata). When started under EL5, it then assembled as md127, not md1, > hence the problem. > > If that is what happened, then boot the system with the same LiveDVD, > stop the raid and then assemble it as md1 while updating the > super-minor. (You might want to mount the installation and look at fstab > and grub.conf while running the LiveDVD to verify that it is looking for > md1). > > For example (assuming md1 contained partitions sda1 and sdb1): > > - (Boot using the LiveDVD) I forgot (at least) one thing: - (Stop md127-based swap > # swapoff -a ) > - (Unmount anything from md127 > # df -h) > > - (Inactivate any VGs/LVs > # vgchange -an <VG> or lvchange -an <LV>) > > # mdadm -S /dev/md127 > > # mdadm -A /dev/md1 -U super-minor /dev/sd[ab]1 > > Then shut down the LiveDVD and attempt to boot the system under EL5. > > Steve > > PS I don't watch EL5 boot very often/recently, so I might have misses > something relevant in your post. > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos