Hello list,
Currently, i use a partition image to run my XenU (/dev/hda2) and "fdisk
-l" return nothing and can''t open /dev/hda .
I want to use a full hard drive image (not partition image) from my Xen0
as hda in my XenU. I want to be able to run fdisk on hda in my XenU to
list and regenerate partitions.
I tried with this (/img is my hard drive image):
disk = [''/img,hda,w'']
disk = [''phy:loop3,hda,w''], loop3 is /img attached to
/dev/loop3 by
losetup.
But, both don''t work.
Is it possible ?
Can anyone help me ?
Thanks in advance.
Regard,
Gonéri Le Bouder
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Luciano Miguel Ferreira Rocha
2005-Feb-11 12:51 UTC
Re: [Xen-devel] fdisk hard drive image
On Fri, Feb 11, 2005 at 12:48:28PM +0100, Gonéri Le Bouder wrote:> Hello list, > > > Currently, i use a partition image to run my XenU (/dev/hda2) and "fdisk > -l" return nothing and can''t open /dev/hda . > > I want to use a full hard drive image (not partition image) from my Xen0 > as hda in my XenU. I want to be able to run fdisk on hda in my XenU to > list and regenerate partitions. > > > I tried with this (/img is my hard drive image): > > disk = [''/img,hda,w''] > > disk = [''phy:loop3,hda,w''], loop3 is /img attached to /dev/loop3 by > losetup. > > But, both don''t work. > > Is it possible ?THe block device isn''t exported as an hard disk. Just as a block device (like ram*, loop*). If you want to use several filesystems over a single block device, you''ll have to use lvm. Regards, Luciano Rocha ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
Luciano Miguel Ferreira Rocha wrote:>On Fri, Feb 11, 2005 at 12:48:28PM +0100, Gonéri Le Bouder wrote: > > >>Hello list, >> >> >>Currently, i use a partition image to run my XenU (/dev/hda2) and "fdisk >>-l" return nothing and can''t open /dev/hda . >> >>I want to use a full hard drive image (not partition image) from my Xen0 >>as hda in my XenU. I want to be able to run fdisk on hda in my XenU to >>list and regenerate partitions. >> >> >>I tried with this (/img is my hard drive image): >> >>disk = [''/img,hda,w''] >> >>disk = [''phy:loop3,hda,w''], loop3 is /img attached to /dev/loop3 by >>losetup. >> >>But, both don''t work. >> >>Is it possible ? >> >> > >THe block device isn''t exported as an hard disk. Just as a block device >(like ram*, loop*). > >If you want to use several filesystems over a single block device, >you''ll have to use lvm. >Thanks for the answer, In this case, if i use lvm, i still have to create my partitions from Dom0. Is there a way to create partitions from XenU with fdisk. Gonéri ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
Luciano Miguel Ferreira Rocha
2005-Feb-11 15:41 UTC
Re: [Xen-devel] fdisk hard drive image
On Fri, Feb 11, 2005 at 03:06:36PM +0100, Gonéri Le Bouder wrote:> Luciano Miguel Ferreira Rocha wrote: > > >On Fri, Feb 11, 2005 at 12:48:28PM +0100, Gonéri Le Bouder wrote: > > > > > >>Hello list, > >> > >> > >>Currently, i use a partition image to run my XenU (/dev/hda2) and "fdisk > >>-l" return nothing and can''t open /dev/hda . > >> > >>I want to use a full hard drive image (not partition image) from my Xen0 > >>as hda in my XenU. I want to be able to run fdisk on hda in my XenU to > >>list and regenerate partitions. > >> > >> > >>I tried with this (/img is my hard drive image): > >> > >>disk = [''/img,hda,w''] > >> > >>disk = [''phy:loop3,hda,w''], loop3 is /img attached to /dev/loop3 by > >>losetup. > >> > >>But, both don''t work. > >> > >>Is it possible ? > >> > >> > > > >THe block device isn''t exported as an hard disk. Just as a block device > >(like ram*, loop*). > > > >If you want to use several filesystems over a single block device, > >you''ll have to use lvm. > > > > Thanks for the answer, > > > In this case, if i use lvm, i still have to create my partitions from > Dom0. Is there a way to create partitions from XenU with fdisk.Not that I know of. (You may run it, but you may have to specify cilinders and heads by hand.) You can create a single partition on dom0, or use the whole disk for lvm under xenU. Regards, Luciano Rocha ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> Currently, i use a partition image to run my XenU (/dev/hda2) and "fdisk > -l" return nothing and can''t open /dev/hda .So your config file looks like: disk = [''file:/path/to/file,hda2,w''] Then in the guest you run: # fdisk -l /dev/hda And get "can''t open /dev/hda"? That''s to be expected, since you''re using a Xen "virtual" partition and there isn''t a real hda behind it.> I want to use a full hard drive image (not partition image) from my Xen0 > as hda in my XenU. I want to be able to run fdisk on hda in my XenU to > list and regenerate partitions.Should work as far as I know.> I tried with this (/img is my hard drive image): > > disk = [''/img,hda,w'']This should be: disk = [''file:/img,hda,w''] otherwise the tools don''t know what kind of backing you want for the VBD.> disk = [''phy:loop3,hda,w''], loop3 is /img attached to /dev/loop3 by > losetup.That should just work if the setup of /dev/loop3 worked OK. Can you mount /dev/loop3 in dom0 OK? Can you please post what errors you''re getting from these attempts? Cheers, Mark> Is it possible ? > Can anyone help me ? > Thanks in advance. > > Regard, > > Gonéri Le Bouder > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT Products from real users. > Discover which products truly live up to the hype. Start reading now. > http://ads.osdn.com/?ad_ide95&alloc_id396&op=Click > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/xen-devel------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> It''s what i did. Sorry, i did a typo in my first post.OK, cool.> > Can you please post what errors you''re getting from these attempts? > > In both case i get the same result, > no error. But, i can''t open /dev/hda with fdisk.Hrrrm, that''s rather strange. Can you try exporting as sda instead of hda? We did have problems with whole disk VBDs a while back but I thought it''d been sorted... Does anyone else remember better? Cheers, Mark ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
>>I tried with this (/img is my hard drive image): >> >>disk = [''/img,hda,w''] > > > This should be: > disk = [''file:/img,hda,w'']It''s what i did. Sorry, i did a typo in my first post.> otherwise the tools don''t know what kind of backing you want for the VBD. > > >>disk = [''phy:loop3,hda,w''], loop3 is /img attached to /dev/loop3 by >>losetup. > > > That should just work if the setup of /dev/loop3 worked OK. Can you > mount /dev/loop3 in dom0 OK? > > Can you please post what errors you''re getting from these attempts?In both case i get the same result, no error. But, i can''t open /dev/hda with fdisk. I''ve juste one partition in /proc/partitions called /dev/hda0. Regards, Gonéri ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel
> > > >>>Can you please post what errors you''re getting from these attempts? >>> >>> >>In both case i get the same result, >>no error. But, i can''t open /dev/hda with fdisk. >> >> > >Hrrrm, that''s rather strange. Can you try exporting as sda instead of hda? > >disk = [''file:/home/xendisk,sda,w''] linuxrc# sfdisk -l linuxrc# cat /proc/partitions major minor #blocks name 8 0 2097153 sda0 I get the same result. fdisk return nothing and i''ve just one partitions called /dev/sda0. Regards, Gonéri ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_ide95&alloc_id396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/xen-devel