Libguestfs - Jan 2015 - Re: Can't create any VPS using KVM template due to the error with libguestfs

Hi,

I'm using SolusVM control panel to create KVM VPS. Suddenly, I can't
make
any VPS on Host-Node. Their build log says the SolusVM can't read the
libguestfs in server.

During the debug, I've tried to mount existing VPS using guestmount command
and  I can't mount the KVM image.

Please check here.

[root@msv07 /]# guestmount -i -a /dev/msv07data/kvm139_img /mnt
libguestfs: error: guestfs_launch failed.
See http://libguestfs.org/guestfs-faq.1.html#debugging-libguestfs
and/or run 'libguestfs-test-tool'.
[root@msv07 /]#


I've attached libguestfs-test-tool output (untitled document 1) and debug
output of guestmount command here(untitled document 2).

Please take a look and respond asap, Last time I've opened a ticket, we got
response after one day..

Please make this hurry, I've invested whole day on this issue. But I
can't
solve it.

On Thu, Jan 29, 2015 at 12:16:30AM +0530, Thirumalai Nambi
wrote:
> Hi,
> 
> I'm using SolusVM control panel to create KVM VPS. Suddenly, I
can't make
> any VPS on Host-Node. Their build log says the SolusVM can't read the
> libguestfs in server.
> 
> During the debug, I've tried to mount existing VPS using guestmount
command
> and  I can't mount the KVM image.
> 
> Please check here.
> 
> [root@msv07 /]# guestmount -i -a /dev/msv07data/kvm139_img /mnt
> libguestfs: error: guestfs_launch failed.
> See http://libguestfs.org/guestfs-faq.1.html#debugging-libguestfs
> and/or run 'libguestfs-test-tool'.
> [root@msv07 /]#
> 
> 
> I've attached libguestfs-test-tool output (untitled document 1) and
debug
> output of guestmount command here(untitled document 2).
The error is certainly an unusual one:

mkdtemp: /tmp/lvm4zeZR5: No such file or directory

caused by this code in the daemon:

https://github.com/libguestfs/libguestfs/blob/master/daemon/lvm-filter.c#L75

It's caused by the peculiar way that you've set up /tmp on your
host:

lrwxrwxrwx    1 root root     8 Aug 27 14:48 tmp -> /backup/
drwxrwxrwt.   4 root root  4096 Aug 27 14:48 tmp-

If you really want that setup, you might try adding a line:

/backup

to /usr/lib64/guestfs/supermin.d/hostfiles.  But really the problem is
that you shouldn't make /tmp be a symbolic link.
> Please take a look and respond asap, Last time I've opened a ticket, we
got
> response after one day..
> 
> Please make this hurry, I've invested whole day on this issue. But I
can't
> solve it.
Heh, you get what you pay for ...

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
Fedora Windows cross-compiler. Compile Windows programs, test, and
build Windows installers. Over 100 libraries supported.
http://fedoraproject.org/wiki/MinGW

Awesome dear, Actually I've seen the /tmp conflict before posting the
ticket...But I thought the issue might be different.

Great Support :)

On Thu, Jan 29, 2015 at 2:07 AM, Richard W.M. Jones <rjones@redhat.com>
wrote:
> On Thu, Jan 29, 2015 at 12:16:30AM +0530, Thirumalai Nambi wrote:
> > Hi,
> >
> > I'm using SolusVM control panel to create KVM VPS. Suddenly, I
can't make
> > any VPS on Host-Node. Their build log says the SolusVM can't read
the
> > libguestfs in server.
> >
> > During the debug, I've tried to mount existing VPS using
guestmount
> command
> > and  I can't mount the KVM image.
> >
> > Please check here.
> >
> > [root@msv07 /]# guestmount -i -a /dev/msv07data/kvm139_img /mnt
> > libguestfs: error: guestfs_launch failed.
> > See http://libguestfs.org/guestfs-faq.1.html#debugging-libguestfs
> > and/or run 'libguestfs-test-tool'.
> > [root@msv07 /]#
> >
> >
> > I've attached libguestfs-test-tool output (untitled document 1)
and debug
> > output of guestmount command here(untitled document 2).
>
> The error is certainly an unusual one:
>
> mkdtemp: /tmp/lvm4zeZR5: No such file or directory
>
> caused by this code in the daemon:
>
>
>
https://github.com/libguestfs/libguestfs/blob/master/daemon/lvm-filter.c#L75
>
> It's caused by the peculiar way that you've set up /tmp on your
> host:
>
> lrwxrwxrwx    1 root root     8 Aug 27 14:48 tmp -> /backup/
> drwxrwxrwt.   4 root root  4096 Aug 27 14:48 tmp-
>
> If you really want that setup, you might try adding a line:
>
> /backup
>
> to /usr/lib64/guestfs/supermin.d/hostfiles.  But really the problem is
> that you shouldn't make /tmp be a symbolic link.
>
> > Please take a look and respond asap, Last time I've opened a
ticket, we
> got
> > response after one day..
> >
> > Please make this hurry, I've invested whole day on this issue. But
I
> can't
> > solve it.
>
> Heh, you get what you pay for ...
>
> Rich.
>
> --
> Richard Jones, Virtualization Group, Red Hat
> http://people.redhat.com/~rjones
> Read my programming and virtualization blog: http://rwmj.wordpress.com
> Fedora Windows cross-compiler. Compile Windows programs, test, and
> build Windows installers. Over 100 libraries supported.
> http://fedoraproject.org/wiki/MinGW
>