Libguestfs - Aug 2013 - missing mount cmd confuses guestfish

I think calling "sh" before "mount" should not confuse
guestfish like
that:


# guestfish (1.20.4 on sles11sp3)

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
><fs> add-drive /dev/shm/olaf/vdisk-sles11sp2_full_fate310510-disk0
><fs> launch
 100% ??? 00:00
><fs> sh "cd / ; chroot / ; /bin/pwd"
libguestfs: error: sh: do_command: you must call 'mount' first to mount
the root filesystem
><fs> mount /dev/sda2 /
libguestfs: error: mount: call launch before using this function\n(in guestfish,
don't forget to use the 'run' command)
><fs> launch
libguestfs: error: you must call guestfs_add_drive before
guestfs_launch
><fs>

Olaf

On Sun, Aug 18, Olaf Hering wrote:
> 
> I think calling "sh" before "mount" should not confuse
guestfish like
> that:
> 
> # guestfish (1.20.4 on sles11sp3)
Doing the same, by accident, with 1.22.5 causes a crash:


# guestfish -r -v --network
><fs> add-drive /work/kvm/images/opensuse12.3/disk0.raw
><fs> launch
><fs> sh "ip a"
guestfsd: main_loop: new request, len 0x30
guestfsd: error: do_command: you must call 'mount' first to mount the
root filesystem
*** glibc detected *** guestfsd: free(): invalid pointer: 0x00007fffd8425ba0 ***
libguestfs: error: sh: do_command: you must call 'mount' first to mount
the root filesystem
><fs> mount /de======= Backtrace:
========/lib64/libc.so.6(+0x733b6)[0x7f4994ae83b6]
/lib64/libc.so.6(cfree+0x6c)[0x7f4994aed2dc]
guestfsd[0x409e6f]
guestfsd[0x40a01b]
guestfsd[0x43e9a1]
guestfsd[0x422bd7]
guestfsd[0x41606c]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f4994a93bfd]
uestfsd[0x405189]

...


Olaf

On Thu, Aug 22, 2013 at 02:40:27PM +0200, Olaf Hering
wrote:
> On Sun, Aug 18, Olaf Hering wrote:
> 
> > 
> > I think calling "sh" before "mount" should not
confuse guestfish like
> > that:
> > 
> > # guestfish (1.20.4 on sles11sp3)
> 
> Doing the same, by accident, with 1.22.5 causes a crash:
> 
> 
> # guestfish -r -v --network
> ><fs> add-drive /work/kvm/images/opensuse12.3/disk0.raw
> ><fs> launch
> 
> ><fs> sh "ip a"
> guestfsd: main_loop: new request, len 0x30
> guestfsd: error: do_command: you must call 'mount' first to mount
the root filesystem
> *** glibc detected *** guestfsd: free(): invalid pointer:
0x00007fffd8425ba0 ***
> libguestfs: error: sh: do_command: you must call 'mount' first to
mount the root filesystem
> ><fs> mount /de======= Backtrace: ========>
/lib64/libc.so.6(+0x733b6)[0x7f4994ae83b6]
> /lib64/libc.so.6(cfree+0x6c)[0x7f4994aed2dc]
> guestfsd[0x409e6f]
> guestfsd[0x40a01b]
> guestfsd[0x43e9a1]
> guestfsd[0x422bd7]
> guestfsd[0x41606c]
> /lib64/libc.so.6(__libc_start_main+0xfd)[0x7f4994a93bfd]
> uestfsd[0x405189]
Yup, that's a bug :-(

https://bugzilla.redhat.com/show_bug.cgi?id=1000121

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines.  Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v