[RndTbl] LVM import question

[John Lange]

You could just mount the remote disk over the "network" and then scan it.


On Tue, Nov 3, 2015 at 11:48 AM, Adam Thompson <athompso at athompso.net>
wrote:

>
>
> On 15-11-03 10:55 AM, Kevin McGregor wrote:
>
>> I would like to be able to temporarily move a disk from one Linux system
>> to another. The disk has a complete LVM2 volume group on it which I would
>> like to mount on the second system. However, I may or may not be able to
>> mark the volume group as "exported".
>>
>> Is there any way to import a volume group which isn't marked as
>> "exported"? Or to use the destination system to mark it as such?
>>
>> Background: I've been tasked with creating a Linux VM (Virtual Machine)
>> with ClamAV on it which can scan other Linux VM disks. To do that I assumed
>> I'd shut down the target system and mount its disks on the scanning VM, do
>> the scan, then remove the target disks from the scanning VM.
>>
>> Is there a better way?
>>
>> Kevin
>>
>
> Boot a LiveCD on the to-be-scanned VM?
>
> Actually, I would boot a LiveCD in the dedicated VM anyway. Sysresccd
> works well, and usually has a reasonably-up-to-date version of ClamAV.
> Also, it doesn't require 3D video, so it works well in a VM (unlike, say,
> Ubuntu, CentOS 7, etc.).
>
> If you want a regular HDD (vdd?) installed linux system anyway, simply
> running "pvs", "vgs", "lvs" and then mounting the FS out of /dev/mapper
> should work.  You might have to do a "{pv,vg,lv}change -ay" if it's not
> marked as active.  Do NOT flag it as exported once you're done scanning it,
> or the origin system may refuse to automount it.
>
> If you're running in VMware, I would recommend hot-adding the volume to
> the scanning VM so that it never accidentally tries to boot off it.
>
> -Adam
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-- 
John Lange
www.johnlange.ca
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