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Old 03-21-2009, 10:12 AM   #1
Vilius
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Registered: Jan 2006
Location: Lithuania
Distribution: CentOS, Debian
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Linux and AIX LVM difference ?


Hi,

I'm new on Linux lvm - all my experience in lvm is on AIX and I noticed some fundamental differencies. In AIX lvm configuration(all volume groups and etc) are per operating system - if two AIX OSes share some SAN disk and one of OSes has volude group varied on, the same pv looks only like some pv with unknown content to other os(if other os never imported that pv)

While in Linux things look different. I have dual boot system(slackware + debian) and debian is installed on lvm volumes. Slackware allways sees these debian lvm volumes. If I export that volugroup in slackware, debian can't boot, if debian boots - slackware sees that volume group.
So:
Operations like export or activate are global to vg, not per operating system ?
So if I want to use multiple volumegroups they all allways be visible to operating system whitch detects it's pvs?
How about names than - I can't have volume groups with same name even these vgs are created for different oses ?

thanks
Vilius
 
Old 03-22-2009, 02:59 AM   #2
paulsm4
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Registered: Mar 2004
Distribution: SusE 8.2
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Hi -

I've actually had a lot of experience with AIX logical volumes in previous lives ... but not with Linux LV's. I can tell you they're two entirely different, incompatible beasts.

I'm not sure I see the wisdom in having a single, multi-boot system, and expect the OS that's booted to recognize logical volumes created under and managed by the other OS (the one that's not booted).

Here's a good link that might explain a bit more of what you're looking for:
http://www.tldp.org/HOWTO/LVM-HOWTO/index.html

'Hope that helps .. PSM
 
  


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