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тАО08-10-2010 09:41 PM
тАО08-10-2010 09:41 PM
importing and exporting
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тАО08-10-2010 10:01 PM
тАО08-10-2010 10:01 PM
Re: importing and exporting
1. Add a new volume group to a package.
2. Add logical volume to an existing volume group of a package.
3. Add disk to a volume group of a package.
Regards,
VVS
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тАО08-10-2010 10:06 PM
тАО08-10-2010 10:06 PM
Re: importing and exporting
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тАО08-10-2010 10:15 PM
тАО08-10-2010 10:15 PM
Re: importing and exporting
/usr/sbin/vgexport -m mapfile -s -p -v vg_name
Using the vgexport command generates a mapfile that can be copied to other systems that are part of a high availability cluster and the vgimport command (see vgimport(1M)) can be used to recreate the volume group.
See also vgchange(1M). The mapfile contains a description of the volume group and its associated logical volume(s) (if any). The
logical volume information found on the physical volumes is not modified. Note that with this option, the volume group is not removed from the system. (See the second example below).
The volume group specified in the mapfile can be shared with the importing systems. The volume group is not removed from the exporting system.
$ man vgexport
rgs,
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тАО08-21-2010 04:24 AM
тАО08-21-2010 04:24 AM
Re: importing and exporting
I have some doubts after reading the different posts.
You all say when adding a new disk to a vg you need to export and import the vg configuration map to the other node of the cluster....
is it really necessary ? In the mapfile there is no information regarding the disk being used (strings mapfile), only information about VGs and LVs ....
I would think if we add a new disk to a VG in a cluster we would just need to do a pvscan on the other node, we would then scan the LVM header of the disk (PVRA, which holds specific info on the VG it belongs to, ...) and recreate the lvmtab ...
Any suggestion about how I see things?
Thierry