Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Richard W.M. Jones 
On Wed, Aug 01, 2012 at 11:47:14AM -0500, Shawn Kennedy wrote:
 Problem:
 When trying to inspect the guest using a command like 'virt-ls', we
 get back:
 
 ~]# virt-ls -d guest /path
 virt-ls: multi-boot operating systems are not supported by the -i option

What does virt-inspector2 [this is RHEL 6] display for this guest?

  virt-inspector2 -d guest

virt-ls fundamentally doesn't work with multi-boot guests.  However
that doesn't mean to say you can't use libguestfs, you just need to
use some lower level tools or write a Perl/Python/whatever script
against the API.  Have a look at the second example in the
guestfs-perl(3) / guestfs-python(3) man pages to give you some ideas
how to go about this.

By the way it's probably better to use the RHEL 6.3 package,
libguestfs 1.16.19, since it has more bugs fixed.

 Question:
 We know it's because we have 2 filesystems in the guest and
 we have no problem using the '-m' option on the lower-level tools,
 but how do we know which filesystem is mounted??  A simple
 'mount' command could tell us that, but how to run it if I
 don't know which -m mount point to use??

If I understand your question correctly, then the 'mountpoints'
command lists what is mounted, eg:

  $ guestfish -c qemu:///system -d F16x64 -i --ro
  
  Welcome to guestfish, the libguestfs filesystem interactive shell for
  editing virtual machine filesystems.
  
  Type: 'help' for help on commands
'man' to read the manual
'quit' to quit the shell
  
  Operating system: Fedora release 16 (Verne)
  /dev/mapper/vg_f16x64-lv_root mounted on /
  /dev/vda2 mounted on /boot
  
  fs mountpoints 
  /dev/vg_f16x64/lv_root: /
  /dev/vda2: /boot

(or 'mounts' which does the same but only lists the devices).

Please send replies to the mailing list.  I hopefully deleted any
specifics of your environment in this reply.

Rich.

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
Hi Richard,

Because I have 2 filesystems (one in a mounted LV and one in a unmounted
LV), I get 2 sets of mountpoints in virt-inspector2 

mountpoints
  mountpoint dev=/dev/VG1/LV0001.root//mountpoint
  mountpoint dev=/dev/VG1/LV0001.var/var/mountpoint
  mountpoint dev=/dev/VG1/LV0001.app1/app1/mountpoint
  mountpoint dev=/dev/sda1/boot/mountpoint
  mountpoint dev=/dev/VG1/home/home/mountpoint
  mountpoint dev=/dev/VG1/logs/logs/mountpoint
  mountpoint dev=/dev/VG1/cores/cores/mountpoint
  mountpoint dev=/dev/VG1/storage/storage/mountpoint
/mountpoints

mountpoints
  mountpoint dev=/dev/VG1/LV0002.root//mountpoint
  mountpoint dev=/dev/VG1/LV0002.var/var/mountpoint
  mountpoint dev=/dev/VG1/LV0002.app1/app1/mountpoint
  mountpoint dev=/dev/sda1/boot/mountpoint
  mountpoint dev=/dev/VG1/home/home/mountpoint
  mountpoint dev=/dev/VG1/logs/logs/mountpoint
  mountpoint dev=/dev/VG1/cores/cores/mountpoint
  mountpoint dev=/dev/VG1/storage/storage/mountpoint
/mountpoints

So, which one is the real one??  If I log into the guest directly,
I know the /dev/VG1/LV0002* is the mounted partition (by
using 'mount' command or by examining /etc/fstab). 

(from the guest)
# mount | grep root
/dev/mapper/VG1-LV0002.root on / type ext3 (rw)

As much as I would like to, we cannot move the RHEL release to
the next release.  Project restrictions and all ... :-) 

Lastly, where is 'guestfish' installed on the system?? It's not installed
 on my system, even though I have installed the RHEL6.2 RPMs. 

# rpm -qa | grep libguest
python-libguestfs-1.7.17-26.el6.x86_64
libguestfs-1.7.17-26.el6.x86_64
libguestfs-tools-c-1.7.17-26.el6.x86_64
libguestfs-mount-1.7.17-26.el6.x86_64
libguestfs-tools-1.7.17-26.el6.x86_64

# guestfish
-bash: guestfish: command not found

 -Original Message-
 From: Richard W.M. Jones [mailto:rjo...@redhat.com] 
 On Wed, Aug 01, 2012 at 11:47:14AM -0500, Shawn Kennedy wrote:
  Problem:
  When trying to inspect the guest using a command like 'virt-ls', we
  get back:
 
  ~]# virt-ls -d guest /path
  virt-ls: multi-boot operating systems are not supported by the -i option
 
 What does virt-inspector2 [this is RHEL 6] display for this guest?
 
   virt-inspector2 -d guest
 
 virt-ls fundamentally doesn't work with multi-boot guests.  However
 that doesn't mean to say you can't use libguestfs, you just need to
 use some lower level tools or write a Perl/Python/whatever script
 against the API.  Have a look at the second example in the
 guestfs-perl(3) / guestfs-python(3) man pages to give you some ideas
 how to go about this.
 
 By the way it's probably better to use the RHEL 6.3 package,
 libguestfs 1.16.19, since it has more bugs fixed.
 
  Question:
  We know it's because we have 2 filesystems in the guest and
  we have no problem using the '-m' option on the lower-level tools,
  but how do we know which filesystem is mounted??  A simple
  'mount' command could tell us that, but how to run it if I
  don't know which -m mount point to use??
 
 If I understand your question correctly, then the 'mountpoints'
 command lists what is mounted, eg:
 
   $ guestfish -c qemu:///system -d F16x64 -i --ro
 
   Welcome to guestfish, the libguestfs filesystem interactive shell for
   editing virtual machine filesystems.
 
   Type: 'help' for help on commands
 'man' to read the manual
 'quit' to quit the shell
 
   Operating system: Fedora release 16 (Verne)
   /dev/mapper/vg_f16x64-lv_root mounted on /
   /dev/vda2 mounted on /boot
 
   fs mountpoints
   /dev/vg_f16x64/lv_root: /
   /dev/vda2: /boot
 
 (or 'mounts' which does the same but only lists the devices).

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Richard W.M. Jones 
On Wed, Aug 01, 2012 at 01:19:45PM -0500, Shawn Kennedy wrote:
 Hi Richard,
 
 Because I have 2 filesystems (one in a mounted LV and one in a unmounted
 LV), I get 2 sets of mountpoints in virt-inspector2 
 
 mountpoints
   mountpoint dev=/dev/VG1/LV0001.root//mountpoint
   mountpoint dev=/dev/VG1/LV0001.var/var/mountpoint
   mountpoint dev=/dev/VG1/LV0001.app1/app1/mountpoint
   mountpoint dev=/dev/sda1/boot/mountpoint
   mountpoint dev=/dev/VG1/home/home/mountpoint
   mountpoint dev=/dev/VG1/logs/logs/mountpoint
   mountpoint dev=/dev/VG1/cores/cores/mountpoint
   mountpoint dev=/dev/VG1/storage/storage/mountpoint
 /mountpoints
 
 mountpoints
   mountpoint dev=/dev/VG1/LV0002.root//mountpoint
   mountpoint dev=/dev/VG1/LV0002.var/var/mountpoint
   mountpoint dev=/dev/VG1/LV0002.app1/app1/mountpoint
   mountpoint dev=/dev/sda1/boot/mountpoint
   mountpoint dev=/dev/VG1/home/home/mountpoint
   mountpoint dev=/dev/VG1/logs/logs/mountpoint
   mountpoint dev=/dev/VG1/cores/cores/mountpoint
   mountpoint dev=/dev/VG1/storage/storage/mountpoint
 /mountpoints

virt-inspector is hopefully seeing two separate operatingsystem's
here.

 So, which one is the real one??  If I log into the guest directly,
 I know the /dev/VG1/LV0002* is the mounted partition (by
 using 'mount' command or by examining /etc/fstab). 

So I think what you're asking is, what root device is currently
mounted in the running guest, when you're inspecting the guest from
outside (hopefully read-only) using libguestfs.

This isn't something that libguestfs can know since all it can see is
what is in the disks, not the state of the running guest itself.  But
there are some heuristics you could use instead:

(1) You could look at tell-tale signs to see which root device has
most recently been mounted.  Probably the simplest thing is to look at
the date of /var/log/messages in each potential root, and choose the
most recent one (since /var/log/messages is reliably and frequently
updated when a guest boots and runs).

(2) You could try doing what virt-v2v does, which is to parse the grub
configuration to find out what root parameter is being passed to the
kernel at boot time.  I believe this is the code ...

http://git.fedorahosted.org/git/?p=virt-v2v.git;a=blob;f=lib/Sys/VirtConvert/Converter/RedHat.pm;h=6bda68bffad6fc959dbadadee89447df71245491;hb=HEAD#l549

 (from the guest)
 # mount | grep root
 /dev/mapper/VG1-LV0002.root on / type ext3 (rw)
 
 As much as I would like to, we cannot move the RHEL release to
 the next release.  Project restrictions and all ... :-) 
 
 Lastly, where is 'guestfish' installed on the system?? It's not installed
  on my system, even though I have installed the RHEL6.2 RPMs. 

 # rpm -qa | grep libguest
 python-libguestfs-1.7.17-26.el6.x86_64
 libguestfs-1.7.17-26.el6.x86_64
 libguestfs-tools-c-1.7.17-26.el6.x86_64
 libguestfs-mount-1.7.17-26.el6.x86_64
 libguestfs-tools-1.7.17-26.el6.x86_64
 
 # guestfish
 -bash: guestfish: command not found

That's odd.  It should be in libguestfs-tools-c.  Try:

  rpm -ql libguestfs-tools-c | grep guestfish

and check that your $PATH is set correctly.

Rich.

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
Hi Rich,

Let's handle the easy one first:

# rpm -qa | grep libguestfs-tools-c
libguestfs-tools-c-1.7.17-26.el6.x86_64

# rpm -ql libguestfs-tools-c
/usr/bin/virt-cat
/usr/bin/virt-df
/usr/bin/virt-filesystems
/usr/bin/virt-inspector2
/usr/bin/virt-ls
/usr/bin/virt-rescue
/usr/share/man/man1/virt-cat.1.gz
/usr/share/man/man1/virt-df.1.gz
/usr/share/man/man1/virt-filesystems.1.gz
/usr/share/man/man1/virt-inspector2.1.gz
/usr/share/man/man1/virt-ls.1.gz
/usr/share/man/man1/virt-rescue.1.gz

It's not in that package according to my distro (RHEL6.2).

Thanks,
Shawn

 -Original Message-
 From: Richard W.M. Jones [mailto:rjo...@redhat.com]
 Sent: Wednesday, August 01, 2012 2:54 PM
 To: Shawn Kennedy
 Cc: libguestfs@redhat.com; 'Smudde, Mark Alan (Mark)'; 'Tockstein, James E 
 (Jim)'
 Subject: Re: [Libguestfs] libguestfs question - multiple partitions in the 
 guest
 
 On Wed, Aug 01, 2012 at 01:19:45PM -0500, Shawn Kennedy wrote:
  Lastly, where is 'guestfish' installed on the system?? It's not installed
   on my system, even though I have installed the RHEL6.2 RPMs.
 
  # rpm -qa | grep libguest
  python-libguestfs-1.7.17-26.el6.x86_64
  libguestfs-1.7.17-26.el6.x86_64
  libguestfs-tools-c-1.7.17-26.el6.x86_64
  libguestfs-mount-1.7.17-26.el6.x86_64
  libguestfs-tools-1.7.17-26.el6.x86_64
 
  # guestfish
  -bash: guestfish: command not found
 
 That's odd.  It should be in libguestfs-tools-c.  Try:
 
   rpm -ql libguestfs-tools-c | grep guestfish
 
 and check that your $PATH is set correctly.


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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
 On Wed, Aug 01, 2012 at 08:54:01PM +0100, Richard W.M. Jones wrote:
  (1) You could look at tell-tale signs to see which root device has
  most recently been mounted.  Probably the simplest thing is to look at
  the date of /var/log/messages in each potential root, and choose the
  most recent one (since /var/log/messages is reliably and frequently
  updated when a guest boots and runs).
 
 As in the attached program.

Neat!!  I just looked at it - very nice!!  We will give it a try
and report our findings!  If it does work, we will have to convert
it to Python (preferred).

Thanks!
Shawn

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
 -Original Message-
 From: libguestfs-boun...@redhat.com [mailto:libguestfs-boun...@redhat.com] On 
 Behalf Of Shawn Kennedy
 Sent: Wednesday, August 01, 2012 3:34 PM
 To: libguestfs@redhat.com
 Cc: 'Smudde, Mark Alan (Mark)'; 'Tockstein, James E (Jim)'
 Subject: Re: [Libguestfs] libguestfs question - multiple partitions in the 
 guest
 
  On Wed, Aug 01, 2012 at 08:54:01PM +0100, Richard W.M. Jones wrote:
   (1) You could look at tell-tale signs to see which root device has
   most recently been mounted.  Probably the simplest thing is to look at
   the date of /var/log/messages in each potential root, and choose the
   most recent one (since /var/log/messages is reliably and frequently
   updated when a guest boots and runs).
 
  As in the attached program.
 
 Neat!!  I just looked at it - very nice!!  We will give it a try
 and report our findings!  If it does work, we will have to convert
 it to Python (preferred).


Success!!

# ./mostrecent.pl /storage/images/guest.img
Youngest root filesystem is: /dev/VG1/LV0002.root

With that knowledge, we can then mount (ro) the right mount point
and inspect further!  

Thank you again!
Shawn

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Richard W.M. Jones 
On Wed, Aug 01, 2012 at 03:23:24PM -0500, Shawn Kennedy wrote:
 Hi Rich,
 
 Let's handle the easy one first:
 
 # rpm -qa | grep libguestfs-tools-c
 libguestfs-tools-c-1.7.17-26.el6.x86_64
 
 # rpm -ql libguestfs-tools-c
 /usr/bin/virt-cat
 /usr/bin/virt-df
 /usr/bin/virt-filesystems
 /usr/bin/virt-inspector2
 /usr/bin/virt-ls
 /usr/bin/virt-rescue
 /usr/share/man/man1/virt-cat.1.gz
 /usr/share/man/man1/virt-df.1.gz
 /usr/share/man/man1/virt-filesystems.1.gz
 /usr/share/man/man1/virt-inspector2.1.gz
 /usr/share/man/man1/virt-ls.1.gz
 /usr/share/man/man1/virt-rescue.1.gz
 
 It's not in that package according to my distro (RHEL6.2).

Sorry .. it's RHEL 6.2 so the package is called 'guestfish'.

  # yum install guestfish

Rich.

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
 -Original Message-
 From: Richard W.M. Jones [mailto:rjo...@redhat.com]
 Sent: Wednesday, August 01, 2012 3:53 PM
 To: Shawn Kennedy
 Cc: libguestfs@redhat.com; 'Smudde, Mark Alan (Mark)'; 'Tockstein, James E 
 (Jim)'
 Subject: Re: [Libguestfs] libguestfs question - multiple partitions in the 
 guest
 
 On Wed, Aug 01, 2012 at 03:23:24PM -0500, Shawn Kennedy wrote:
  Hi Rich,
 
  Let's handle the easy one first:
 
  # rpm -qa | grep libguestfs-tools-c
  libguestfs-tools-c-1.7.17-26.el6.x86_64
 
  # rpm -ql libguestfs-tools-c
  /usr/bin/virt-cat
  /usr/bin/virt-df
  /usr/bin/virt-filesystems
  /usr/bin/virt-inspector2
  /usr/bin/virt-ls
  /usr/bin/virt-rescue
  /usr/share/man/man1/virt-cat.1.gz
  /usr/share/man/man1/virt-df.1.gz
  /usr/share/man/man1/virt-filesystems.1.gz
  /usr/share/man/man1/virt-inspector2.1.gz
  /usr/share/man/man1/virt-ls.1.gz
  /usr/share/man/man1/virt-rescue.1.gz
 
  It's not in that package according to my distro (RHEL6.2).
 
 Sorry .. it's RHEL 6.2 so the package is called 'guestfish'.
 
   # yum install guestfish

Ah nuts!  Looks like I missed a package when I pulled everything
together!!  Thanks, I will add accordingly!

Shawn

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
 -Original Message-
 From: libguestfs-boun...@redhat.com [mailto:libguestfs-boun...@redhat.com] On 
 Behalf Of Shawn Kennedy
  From: Richard W.M. Jones [mailto:rjo...@redhat.com]
  (2) You could try doing what virt-v2v does, which is to parse the grub
  configuration to find out what root parameter is being passed to the
  kernel at boot time.  I believe this is the code ...
 
  http://git.fedorahosted.org/git/?p=virt-
 
 v2v.git;a=blob;f=lib/Sys/VirtConvert/Converter/RedHat.pm;h=6bda68bffad6fc959dbadadee89447df71245491;hb=H
  EAD#l549
 
 We will look into seeing what this is doing.  looking at the grub config
 will be the most correct way.


That URL doesn't work.  Do you have a working link??

Thanks!
Shawn

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Richard W.M. Jones 
On Wed, Aug 01, 2012 at 03:31:19PM -0500, Shawn Kennedy wrote:
 I wonder - maybe an new tool (virt-grub) to dump out the grub
 content of the guest image (if linux)!! :-) :-) :-)

It's actually pretty simple to script this.  See attached
(requires a grub1 guest).

Rich.

-- 
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virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into Xen guests.
http://et.redhat.com/~rjones/virt-p2v
#!/usr/bin/python

import sys
import re
import guestfs

assert (len (sys.argv) == 2)
disk = sys.argv[1]

g = guestfs.GuestFS ()

# Attach the disk image read-only to libguestfs.
g.add_drive_opts (disk, readonly=1)

# Run the libguestfs back-end.
g.launch ()

# Ask libguestfs to inspect for operating systems.
roots = g.inspect_os ()

for root in roots:
print (root: %s % root)

# Mount up the disks, like guestfish -i.
mps = g.inspect_get_mountpoints (root)
def compare (a, b):
if len(a[0])  len(b[0]):
return 1
elif len(a[0]) == len(b[0]):
return 0
else:
return -1
mps.sort (compare)
for mp_dev in mps:
try:
g.mount_ro (mp_dev[1], mp_dev[0])
except RuntimeError as msg:
print %s (ignored) % msg

# Run Augeas on the guest.
g.aug_init (/, 0)

# Display grub configuration recursively.
def display (node):
xs = g.aug_match (%s/* % node)
for x in xs:
try:
y = g.aug_get (x)
print x,  , y
except RuntimeError:
pass
display (x)

display (/files/etc/grub.conf)

g.aug_close ()

# Unmount everything.
g.umount_all ()
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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Richard W.M. Jones 
On Wed, Aug 01, 2012 at 04:02:27PM -0500, Shawn Kennedy wrote:
  -Original Message-
  From: libguestfs-boun...@redhat.com [mailto:libguestfs-boun...@redhat.com] 
  On Behalf Of Shawn Kennedy
   From: Richard W.M. Jones [mailto:rjo...@redhat.com]
   (2) You could try doing what virt-v2v does, which is to parse the grub
   configuration to find out what root parameter is being passed to the
   kernel at boot time.  I believe this is the code ...
  
   http://git.fedorahosted.org/git/?p=virt-
  
  v2v.git;a=blob;f=lib/Sys/VirtConvert/Converter/RedHat.pm;h=6bda68bffad6fc959dbadadee89447df71245491;hb=H
   EAD#l549
  
  We will look into seeing what this is doing.  looking at the grub config
  will be the most correct way.
 
 
 That URL doesn't work.  Do you have a working link??

That's strange, did fedorahosted just switch from gitweb to cgit?

http://git.fedorahosted.org/cgit/virt-v2v.git/tree/lib/Sys/VirtConvert/Converter/RedHat.pm#n549

or: http://bit.ly/Mk4XAg

Rich.

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
 -Original Message-
 From: Richard W.M. Jones [mailto:rjo...@redhat.com] 
 On Wed, Aug 01, 2012 at 04:02:27PM -0500, Shawn Kennedy wrote:
   -Original Message-
   From: libguestfs-boun...@redhat.com 
   [mailto:libguestfs-boun...@redhat.com] On Behalf Of Shawn
 Kennedy
From: Richard W.M. Jones [mailto:rjo...@redhat.com]
(2) You could try doing what virt-v2v does, which is to parse the grub
configuration to find out what root parameter is being passed to the
kernel at boot time.  I believe this is the code ...
   
http://git.fedorahosted.org/git/?p=virt-
   
  
 v2v.git;a=blob;f=lib/Sys/VirtConvert/Converter/RedHat.pm;h=6bda68bffad6fc959dbadadee89447df71245491;hb=H
EAD#l549
  
   We will look into seeing what this is doing.  looking at the grub config
   will be the most correct way.
 
 
  That URL doesn't work.  Do you have a working link??
 
 That's strange, did fedorahosted just switch from gitweb to cgit?
 
 http://git.fedorahosted.org/cgit/virt-v2v.git/tree/lib/Sys/VirtConvert/Converter/RedHat.pm#n549
 
 or: http://bit.ly/Mk4XAg

Success!   I can view it now.

Thanks!
Shawn

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
 -Original Message-
 From: Richard W.M. Jones [mailto:rjo...@redhat.com]
 Sent: Wednesday, August 01, 2012 4:22 PM
 To: Shawn Kennedy
 Cc: libguestfs@redhat.com; 'Smudde, Mark Alan (Mark)'; 'Tockstein, James E 
 (Jim)'
 Subject: Re: [Libguestfs] libguestfs question - multiple partitions in the 
 guest
 
 On Wed, Aug 01, 2012 at 03:31:19PM -0500, Shawn Kennedy wrote:
  I wonder - maybe an new tool (virt-grub) to dump out the grub
  content of the guest image (if linux)!! :-) :-) :-)
 
 It's actually pretty simple to script this.  See attached
 (requires a grub1 guest).

Luckily, we still are grub1 .

# grub --version
grub (GNU GRUB 0.97)

So I ran it and it tells me I have 2 OSs ...

root: /dev/VG1/LV0001.root
root: /dev/VG1/LV0002.root

I thought it might dump the running grub, but then again, it
doesn't know what running is it looks like using /var/log/messages
file to determine what is (likely) mounted in the guest.

Thanks!
Shawn

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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Richard W.M. Jones 
On Wed, Aug 01, 2012 at 05:02:28PM -0500, Shawn Kennedy wrote:
  -Original Message-
  From: Richard W.M. Jones [mailto:rjo...@redhat.com]
  Sent: Wednesday, August 01, 2012 4:22 PM
  To: Shawn Kennedy
  Cc: libguestfs@redhat.com; 'Smudde, Mark Alan (Mark)'; 'Tockstein, James E 
  (Jim)'
  Subject: Re: [Libguestfs] libguestfs question - multiple partitions in the 
  guest
  
  On Wed, Aug 01, 2012 at 03:31:19PM -0500, Shawn Kennedy wrote:
   I wonder - maybe an new tool (virt-grub) to dump out the grub
   content of the guest image (if linux)!! :-) :-) :-)
  
  It's actually pretty simple to script this.  See attached
  (requires a grub1 guest).
 
 Luckily, we still are grub1 .
 
 # grub --version
 grub (GNU GRUB 0.97)
 
 So I ran it and it tells me I have 2 OSs ...
 
   root: /dev/VG1/LV0001.root
   root: /dev/VG1/LV0002.root
 
 I thought it might dump the running grub, [...]

I thought it would do too.  One problem with Augeas is that it relies
on the exact location of the configuration file.

You can try changing:

  display (/files/etc/grub.conf)

to:

  display (/files)

and see if the grub config shows up anywhere in the (likely to be
huge) output.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming blog: http://rwmj.wordpress.com
Fedora now supports 80 OCaml packages (the OPEN alternative to F#)
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Re: [Libguestfs] libguestfs question - multiple partitions in the guest

2012-08-01 Thread Shawn Kennedy 
 -Original Message-
 From: Richard W.M. Jones [mailto:rjo...@redhat.com]
 Sent: Wednesday, August 01, 2012 5:09 PM
 To: Shawn Kennedy
 Cc: libguestfs@redhat.com; 'Smudde, Mark Alan (Mark)'; 'Tockstein, James E 
 (Jim)'
 Subject: Re: [Libguestfs] libguestfs question - multiple partitions in the 
 guest
 
 On Wed, Aug 01, 2012 at 05:02:28PM -0500, Shawn Kennedy wrote:
   -Original Message-
   From: Richard W.M. Jones [mailto:rjo...@redhat.com]
   Sent: Wednesday, August 01, 2012 4:22 PM
   To: Shawn Kennedy
   Cc: libguestfs@redhat.com; 'Smudde, Mark Alan (Mark)'; 'Tockstein, James 
   E (Jim)'
   Subject: Re: [Libguestfs] libguestfs question - multiple partitions in 
   the guest
  
   On Wed, Aug 01, 2012 at 03:31:19PM -0500, Shawn Kennedy wrote:
I wonder - maybe an new tool (virt-grub) to dump out the grub
content of the guest image (if linux)!! :-) :-) :-)
  
   It's actually pretty simple to script this.  See attached
   (requires a grub1 guest).
 
  Luckily, we still are grub1 .
 
  # grub --version
  grub (GNU GRUB 0.97)
 
  So I ran it and it tells me I have 2 OSs ...
 
  root: /dev/VG1/LV0001.root
  root: /dev/VG1/LV0002.root
 
  I thought it might dump the running grub, [...]
 
 I thought it would do too.  One problem with Augeas is that it relies
 on the exact location of the configuration file.
 
 You can try changing:
 
   display (/files/etc/grub.conf)
 
 to:
 
   display (/files)
 
 and see if the grub config shows up anywhere in the (likely to be
 huge) output.

You are right /files is a very big list and after 10+ minutes
of running, it wasn't done.  I narrowed it down (/files/boot)
to see if I could find the files in /boot (after all, 
/boot/grub/grub.com is where it really is) and alas,
it doesn't find it, just found this:

root: /dev/VG1/LV0001.root
/files/boot/grub/device.map/hd0   /dev/vda
root: /dev/VG1/LV0002.root
/files/boot/grub/device.map/hd0   /dev/vda

Thanks,
Shawn





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