Hello list.
Since morning I have an emergency. After last kernel update one of my
servers didn't start. On display I see only "GRUB" :(
I have 2 more servers based on CentOS too, but after the same update
this servers works.
All servers have 2 HDs and works as software mirror.
I have started damaged machine using Knoppix and I can see partitions
and data on both disks. Of course I have made a backup.
Anybody has the same problem? It can be hardware problem - HD diode
light all the time. Or maybe something went wrong during update?
Regards
--
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D o m i n i k S k ? a d a n o w s k i
On Mon, 2006-05-29 at 13:02 +0200, Dominik Sk?adanowski wrote:> Hello list. > > Since morning I have an emergency. After last kernel update one of my > servers didn't start. On display I see only "GRUB" :( > I have 2 more servers based on CentOS too, but after the same update > this servers works. > > All servers have 2 HDs and works as software mirror. > > I have started damaged machine using Knoppix and I can see partitions > and data on both disks. Of course I have made a backup. > > Anybody has the same problem? It can be hardware problem - HD diode > light all the time. Or maybe something went wrong during update? >It is very strange that grub (which was already installed and working) would go bad during an upgrade. I would boot from a CentOS-4.3 CD-1 and do this command at the isolinux prompt: linux rescue If it mounts the install at /mnt/sysimage ... do this: chroot /mnt/sysimage Then I would follow this guide to make sure that grub is installed on both hard drives and try rebooting: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=114690 (comment #7 should make you work ... assuming you have a software mirror using sda/sdb or hda/hdb) You may need to look at the file /boot/grub/Device.map to insure all the drives are listed properly. Thanks, Johnny Hughes -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part URL: <http://lists.centos.org/pipermail/centos/attachments/20060529/ef9f8fd0/attachment-0002.sig>
2006/5/29, Johnny Hughes <mailing-lists at hughesjr.com>:> > Since morning I have an emergency. After last kernel update one of my > > servers didn't start. On display I see only "GRUB" :( > > I have 2 more servers based on CentOS too, but after the same update > > this servers works. > > > > All servers have 2 HDs and works as software mirror. > > > > I have started damaged machine using Knoppix and I can see partitions > > and data on both disks. Of course I have made a backup. > > > > Anybody has the same problem? It can be hardware problem - HD diode > > light all the time. Or maybe something went wrong during update? > > > > It is very strange that grub (which was already installed and working) > would go bad during an upgrade. > > I would boot from a CentOS-4.3 CD-1 and do this command at the isolinux > prompt: > > linux rescue > > If it mounts the install at /mnt/sysimage ... do this: > > chroot /mnt/sysimage > > Then I would follow this guide to make sure that grub is installed on > both hard drives and try rebooting: > > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=114690 > > (comment #7 should make you work ... assuming you have a software mirror > using sda/sdb or hda/hdb) > > You may need to look at the file /boot/grub/Device.map to insure all the > drives are listed properly.Thanks for answer Johnny. It was exactly problem described above. I have reinstalled grub using rescue evironment. Thanks. -- _________________________________________________________________ D o m i n i k S k ? a d a n o w s k i
Bob Marcan wrote:> Nicholas Anderson wrote: > > Hi all, > > > > i've just updated CentOS4.3 . > > After updating it i rebooted the machine (cause there was some > > kernel pkg's) and it seems that centos lost my LVM config .... > > I tried manually a vgscan and: > > (root at backupsrv) boot # vgscan > > connect() failed on local socket: Connection refused > > Locking type 2 initialisation failed. > > > > and my /dev/VG0/LogVol00 dissapeared :-( > > I'm running cluster and got the same error. > Go back to 2.6.9-34. > > Or remove lvm2-cluster ?If you are running the packages from the csgfs repository, you need to wait until the cluster packages are updated for the new kernel and then upgrade the kernel and the csgfs packages together. -- Bowie