i got the same issue; i was unable in any way to
chroot /mnt/sysimage
after linux rescue
as fstab and grub.conf have been changed by upgrade; i fixed them mounting disk on an external usb box.
this was my changed fstab:
UUID=cf7cd8e9-13c6-4997-88cf-2b2e917736fb / ext3 defaults 1 1
UUID=22309ffe-0180-41bd-a868-9d5b15660781 /home ext3 defaults 1 2
UUID=c46f0b8e-ea34-47f5-8c7f-57a7f3a5d531 /boot ext3 defaults 1 2
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
UUID=817d341a-8daa-43dd-8c97-2eea4c1f418f swap swap defaults 0 0
i restored it to:
[09:34:12 root@matanui /var/log ]# cat /etc/fstab
/dev/VolGroup00/LogVol00 / ext3 defaults 1 1
/dev/VolGroup00/LogVol02 /home ext3 defaults 1 2
/dev/sda1 /boot ext3 defaults 1 2
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
/dev/VolGroup00/LogVol01 swap swap defaults 0 0
this was my grub.conf changed by upgrade:
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
# initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.25.6-55.fc9.i686)
root (hd0,0)
kernel /vmlinuz-2.6.25.6-55.fc9.i686 ro root=UUID=cf7cd8e9-13c6-4997-88cf-2b2e917736fb rhgb quiet
initrd /initrd-2.6.25.6-55.fc9.i686.img
title Fedora (2.6.25.4-30.fc9.i686)
root (hd0,0)
kernel /vmlinuz-2.6.25.4-30.fc9.i686 ro root=UUID=cf7cd8e9-13c6-4997-88cf-2b2e917736fb rhgb quiet
initrd /initrd-2.6.25.4-30.fc9.i686.img
i restored it to:
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00
# initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.25.6-55.fc9.i686)
root (hd0,0)
kernel /vmlinuz-2.6.25.6-55.fc9.i686 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.25.6-55.fc9.i686.img
title Fedora (2.6.25.6-55.fc9.i686)
root (hd0,0)
kernel /vmlinuz-2.6.25.6-55.fc9.i686 ro root=UUID=cf7cd8e9-13c6-4997-88cf-2b2e917736fb rhgb quiet
initrd /initrd-2.6.25.6-55.fc9.i686.img
title Fedora (2.6.25.4-30.fc9.i686)
root (hd0,0)
kernel /vmlinuz-2.6.25.4-30.fc9.i686 ro root=UUID=cf7cd8e9-13c6-4997-88cf-2b2e917736fb rhgb quiet
initrd /initrd-2.6.25.4-30.fc9.i686.img
at last i was able to chroot and then i issued:
grub-install /dev/sda
then i was able to boot my fc9.
i investigated on /var/log/yum.log
to find the *guilt*;
here it is the excerpt:
Jun 13 13:54:46 Updated: selinux-policy-3.3.1-64.fc9.noarch
Jun 13 13:55:08 Updated: selinux-policy-targeted-3.3.1-64.fc9.noarch
Jun 13 13:55:35 Updated: selinux-policy-devel-3.3.1-64.fc9.noarch
Jun 13 13:55:40 Updated: logwatch-7.3.6-22.fc9.noarch
Jun 13 13:55:47 Updated: kernel-headers-2.6.25.6-55.fc9.i386
Jun 13 13:57:04 Updated: 1:java-1.6.0-openjdk-javadoc-1.6.0.0-0.15.b09.fc9.i386
Jun 13 13:57:14 Installed: kernel-devel-2.6.25.6-55.fc9.i686
Jun 13 13:57:23 Updated: nspr-4.7.1-0.9.1.fc9.i386
Jun 13 13:57:28 Updated: nss-3.12.0.3-0.9.1.fc9.i386
Jun 13 13:57:55 Updated: 1:java-1.6.0-openjdk-1.6.0.0-0.15.b09.fc9.i386
Jun 13 13:57:57 Updated: postgresql-libs-8.3.3-1.fc9.i386
Jun 13 13:57:58 Updated: kpartx-0.4.7-15.fc9.i386
Jun 13 13:57:59 Updated: device-mapper-multipath-0.4.7-15.fc9.i386
Jun 13 13:58:00 Updated: 1:java-1.6.0-openjdk-plugin-1.6.0.0-0.15.b09.fc9.i386
Jun 13 13:58:02 Updated: nss-tools-3.12.0.3-0.9.1.fc9.i386
Jun 13 13:58:31 Installed: kernel-2.6.25.6-55.fc9.i686
Jun 13 13:58:32 Updated: gstreamer-plugins-farsight-0.12.7-2.fc9.i386
Jun 13 13:58:34 Updated: gdb-6.8-10.fc9.i386
Jun 13 13:58:35 Updated: nspr-devel-4.7.1-0.9.1.fc9.i386
Jun 13 13:58:36 Updated: nss-devel-3.12.0.3-0.9.1.fc9.i386
Jun 13 13:59:09 Installed: kernel-2.6.25.6-55.fc9.i686
my suspects are on
Jun 13 13:57:59 Updated: device-mapper-multipath-0.4.7-15.fc9.i386
reading
/usr/share/doc/device-mapper-multipath-0.4.7/FAQ
++++++++++++++++++++++++++++++++++++++++
* in /boot/grub/menu.lst, define the root= kernel parameter
Example : root=/dev/system1
* modify /etc/fstab to reference /dev/system* partitions
At reboot, you should see some info like :
path /dev/sda : multipath system
++++++++++++++++++++++++++++++++++++++++
At reboot you can see a very unexpted christmas gift!
i think that device-mapper-multipath has changed
my /boot/grub/menu.lst and /etc/fstab, but some othr changes are missing;
further, chkconfig multipathd --list is off off off off off
then multipathd doesn't get started at boot and changes on grub.conf and fstab
are devasting
-m
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