Re: [Xen-users] How to Backup and Restore MBR within Logical Volumes?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



> dd if=/dev/virtualmachines/windows7-x64 of=mbr.w7-x64 bs=512 count=1

I think if you do this, you are only backing up the first 512 bytes of the logical volume, not the MBR.

Someone correct me if I am wrong.

--
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
My Primary Blog: http://teo-en-ming-aka-zhang-enming.blogspot.com
My Secondary Blog: http://enmingteo.wordpress.com
My Youtube videos: http://www.youtube.com/user/enmingteo
Email: space.time.universe@xxxxxxxxx
Mobile Phone (Starhub Prepaid): +65-8369-2618
Street: Bedok Reservoir Road
Country: Singapore

On Thu, Nov 12, 2009 at 9:36 AM, Geert Janssens <info@xxxxxxxxxxxx> wrote:
On Thursday 12 November 2009, Mr. Teo En Ming (Zhang Enming) wrote:
> Hi All,
>
> I have several Xen virtual machines within logical volumes using LVM2. I
> did not use disk images for performance reasons.
>
> Conventionally, if I want to clone my virtual machines, I have to dd the LV
> to an image file. But this consumes a lot of time and harddisk space.
>
> So, instead of doing that, I want to use losetup and kpartx with my logical
> volumes, which contain operating systems of virtual machines.
>
> I can backup the filesystems of a virtual machine in this way:
>
> # losetup /dev/loop1 /dev/virtualmachines/windows7-x64
>
Are you sure you need to call losetup first ?

I remember I used kpartx directly on the lvm containing my vbd.

Also, I think you can treat the lvm based vbd as a real disk.

So
dd if=/dev/virtualmachines/windows7-x64 of=mbr.w7-x64 bs=512 count=1

should backup your mbr.

Anyone correct me if I'm wrong please.

Geert

--
Kobalt W.I.T.
Web & Information Technology
Brusselsesteenweg 152
1850 Grimbergen

Tel  : +32 479 339 655
Email: info@xxxxxxxxxxxx


_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users




-- 
fedora-list mailing list
fedora-list@xxxxxxxxxx
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
[Index of Archives]     [Older Fedora Users]     [Fedora Announce]     [Fedora Package Announce]     [EPEL Announce]     [Fedora Magazine]     [Fedora News]     [Fedora Summer Coding]     [Fedora Laptop]     [Fedora Cloud]     [Fedora Advisory Board]     [Fedora Education]     [Fedora Security]     [Fedora Scitech]     [Fedora Robotics]     [Fedora Maintainers]     [Fedora Infrastructure]     [Fedora Websites]     [Anaconda Devel]     [Fedora Devel Java]     [Fedora Legacy]     [Fedora Desktop]     [Fedora Fonts]     [ATA RAID]     [Fedora Marketing]     [Fedora Management Tools]     [Fedora Mentors]     [SSH]     [Fedora Package Review]     [Fedora R Devel]     [Fedora PHP Devel]     [Kickstart]     [Fedora Music]     [Fedora Packaging]     [Centos]     [Fedora SELinux]     [Fedora Legal]     [Fedora Kernel]     [Fedora OCaml]     [Coolkey]     [Virtualization Tools]     [ET Management Tools]     [Yum Users]     [Tux]     [Yosemite News]     [Gnome Users]     [KDE Users]     [Fedora Art]     [Fedora Docs]     [Asterisk PBX]     [Fedora Sparc]     [Fedora Universal Network Connector]     [Libvirt Users]     [Fedora ARM]

  Powered by Linux