[linux-lvm] Question on shared storage volumes.
Heinz J . Mauelshagen
mauelshagen at sistina.com
Thu Jul 10 04:32:01 UTC 2003
Sachin,
after M1 died, you should run "vgscan ; vgchange -ay HA_VG" on M2
to activate the VG there.
On Thu, Jul 10, 2003 at 02:14:56PM +0530, Sachin Sant wrote:
> I have a SCSI storage unit shared between two machines M1 and M2. On one
> of the machine M1 i create a volume group HA_VG , create a LV vol1 and
> filesystem using the LV vol1.
>
> --- >vgcreate HA_VG /dev/sdd /dev/sde /dev/sdf
> --- >lvcreate -i 3 -I 8 -L 100 -n vol1 HA_VG
> --- >mkfs /dev/HA_VG/vol1
> --- >mount /dev/HA_VG/vol1 /mnt
>
> Now for some reason machine M1 dies and the VG is not exported. Using
> the second machine M2 if i try to forcefully import the vg , vgimport
> command coredumps.
>
> --- >vgimport -f HA_VG /dev/sdd /dev/sde /dev/sdf
> Segmentation fault
>
> Should vgimport coredump here. I guess this is not the right way to
> recove the VG . [ I can recover the VG on machine M2 using vgscan /
> vgchange -a y HA_VG ]
>
> I believe the problem might be with the following piece of code in
> vgimport.c
>
> strncpy ( vg_name_this,
> pv_this[0]->vg_name,
> strlen ( pv_this[0]->vg_name) - strlen ( EXPORTED));
Right, it shouldn't get there, because the VG wasn't exported.
>
> Here the difference between strlen will be calculated as -1 in the above
> senario.
>
> May be the right way would be just print a error message instead of a
> core dump.
>
> Just let me know your thoughts.
>
> -Sachin
>
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--
Regards,
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
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Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
56242 Marienrachdorf
Germany
Mauelshagen at Sistina.com +49 2626 141200
FAX 924446
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