Re: CentOS 7: restore fails

On 3/5/2017 11:32 πμ, Nikolaos Milas wrote:

As
I know little about grub2 (and low-level linux) to troubleshoot
the issue, can you please help identify and correct the problem?

I tried to post the mondorestore.log of this VM in a
separate mail, but it obviously failed to be delivered to this
list ("message body too big").

You can find it here:
http://iweb.noa.gr/files/centos7/mondorestore.log

The following seems to be the most relevant part regarding
grub:

DBG4: [Main] libmondo-tools.c->read_cfg_var#1068:
Configuration item bootloader.device is /dev/vda

DBG4: [Main] libmondo-tools.c->read_cfg_var#1068:
Configuration item bootloader.name is GRUB

DBG2: [Main]
../src/mondorestore/mondo-rstr-tools.c->run_boot_loader#1300:
run_boot_loader: device='/dev/vda', name='GRUB'

INFO: Non-interactive mode: no way to give you the
keyboard so that you re-generate your initrd. Hope it's OK

DBG1: [Main]
../src/mondorestore/mondo-rstr-tools.c->offer_to_make_initrd#1257:
Non-interactive mode: no way to give you the keyboard so that
you re-generate your initrd. Hope it's OK

INFO: running: which mr-grub >
/tmp/mondo.tmp.ap2nqv/mondo-run-prog-thing.tmp 2>
/tmp/mondo.tmp.ap2nqv/mondo-run-prog-thing.err

INFO: --------------------------------start of
output-----------------------------

INFO: /bin/mr-grub

INFO: --------------------------------end of
output------------------------------

INFO: ...ran just fine. :-)

DBG1: [Main]
../src/mondorestore/mondo-rstr-tools.c->run_grub#1479: Yay!
mr-grub found...

DBG1: [Main]
../src/mondorestore/mondo-rstr-tools.c->run_grub#1481:
command = mr-grub /dev/vda /tmp/mountlist.txt

INFO: Running
GRUB...

DBG2: [Main]
../src/mondorestore/mondo-rstr-tools.c->run_grub#1488:
mr-grub /dev/vda /tmp/mountlist.txt

Now I'll use grub-install

Launching: chroot /mnt/RESTORING grub-install /dev/vda

chroot: can't execute 'grub-install': No such file or
directory

grub-install returned 127

Now I'll use grub2-install

Installing for i386-pc platform.

grub2-install: error: cannot find a GRUB drive for
/dev/vda1. Check your device.map.

grub2-install returned 1

Trying a hack

Checking usr/lib/grub/i386-pc

Cannot find BOOTPATHNAME

.............Cool.

device (hd0) /dev/vda

root (hd0,0)

setup (hd0)

quit

chroot: can't execute 'grub': No such file or directory

Hack returned res=0

INFO: running: mr-grub /dev/vda /tmp/mountlist.txt >
/tmp/mondo.tmp.ap2nqv/mondo-run-prog-thing.tmp 2>
/tmp/mondo.tmp.ap2nqv/mondo-run-prog-thing.err

INFO: --------------------------------start of
output-----------------------------

INFO: Checking usr/lib/grub/i386-pc

INFO: Cannot find BOOTPATHNAME

INFO: .............Cool.

INFO: --------------------------------end of
output------------------------------

INFO: ...ran just fine. :-)

INFO: Done.

INFO: Your boot loader ran OK

DBG1: [Main] mondorestore.c->nuke_mode#2180: Great!
Boot loader was installed. No need for msg at end.

In the meantime, I tried to fix the cloned VM using the rescatux
( https://sourceforge.net/projects/rescatux/ )
repair disk; it failed as well. See attached images.

The situation remains the same
(i.e. I can only boot using the super-grub2 disk).

How can we fix this cloned CentOS 7 installation to become
bootable?

Thanks,

Nick

------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot

_______________________________________________
Mondo-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/mondo-devel