[RndTbl] LVM import question
Adam Thompson
athompso at athompso.net
Tue Nov 3 13:43:31 CST 2015
You need to do "lvchange -ay ubuntu-vg/root" and then it will show up
under /dev/mapper.
-Adam
On 15-11-03 01:23 PM, Kevin McGregor wrote:
> We're aiming for an off-line scan; I'll look into sysresccd as an option.
>
> As for mounting the LVs, I get this sort of result:
> root at cowsvplav01:~# pvs
> PV VG Fmt Attr PSize PFree
> /dev/sdb5 ubuntu-vg lvm2 a-- 14.76g 268.00m
> root at cowsvplav01:~# vgs
> VG #PV #LV #SN Attr VSize VFree
> ubuntu-vg 1 2 0 wz--n- 14.76g 268.00m
> root at cowsvplav01:~# lvs
> LV VG Attr LSize Pool Origin Data% Move Log
> Copy% Convert
> root ubuntu-vg -wi------ 13.50g
> swap_1 ubuntu-vg -wi------ 1020.00m
> root at cowsvplav01:~# ls /dev/mapper
> control
> root at cowsvplav01:~#
>
> So I don't know how I'm going to mount any of it. Yes, I've hot-added
> it. FWIW, I'm using VMware ESXi 5.1.
>
> On Tue, Nov 3, 2015 at 12:46 PM, Adam Thompson <athompso at athompso.net
> <mailto:athompso at athompso.net>> wrote:
>
> Note that if looking for Linux rootkits, NFS export will/can hide
> them. Otherwise, yeah...
>
>
> On November 3, 2015 12:37:28 PM CST, John Lange <john at johnlange.ca
> <mailto:john at johnlange.ca>> wrote:
>
> 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 <mailto: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 <http://www.johnlange.ca>
>
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