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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] mount a .img file
kpartx is one the most useful utilities ever created :) On Thu, Jan 13, 2011 at 7:12 PM, John Weekes <lists.xen@xxxxxxxxxxxxxxxxxx> wrote: > To save yourself from having to calculate an offset, you could also mount > the whole image and then use the "kpartx" command to map out the partitions > for you. > > -John > > On 1/13/2011 2:05 PM, Chris Petrolino wrote: >> >> Aha that's most likely what I was forgetting! I will give that a shot and >> report back. Thanks a million guys >> >> Kind Regards, >> >> Christopher James Petrolino >> >> >> On Jan 13, 2011, at 5:01 PM, dave<dave@xxxxxxxxxxxxxxx> wrote: >> >>> If it's a disk image you need to provide an offset, for example >>> >>> mount -o loop,offset=32256 /xen/guest.img /mnt/tmp >>> >>> the offset depends on the partitioning of the disk file. for example: >>> >>> ~$ fdisk -l -u -c guest.img >>> >>> Device Boot Start End Blocks Id System >>> guest.img1 * 2048 9920511 4959232 83 Linux >>> guest.img2 9922558 10483711 280577 5 Extended >>> guest.img5 9922560 10483711 280576 82 Linux swap / >>> Solaris >>> >>> this disk image has a 2048 cylinder boot sector, so the offset would be >>> 2048*512, or 1048576 >>> >>> another example: >>> >>> ~$ fdisk -l -u -c guestA.img >>> >>> Device Boot Start End Blocks Id System >>> guestA.img1 * 63 1767149 883543+ 83 Linux >>> guestA.img2 1767150 1992059 112455 5 Extended >>> guestA.img5 1767213 1992059 112423+ 82 Linux swap / >>> Solaris >>> >>> this has a 63 cyl boot sector, so the offset would be 63*512 = 32256. >>> >>> as a shortcut, (in bash shell) you can do this: >>> >>> mount -o loop,offset=$((512*63)) guestA.img /mnt/tmp >>> >>> >>> >>> On 01/13/2011 01:51 PM, Steven Timm wrote: >>>> >>>> What's the output of >>>> >>>> file /xen/guest.img >>>> >>>> probably you need to specify -t ext2 >>>> but the file command will tell you for sure. >>>> >>>> Steve >>>> >>>> >>>> On Thu, 13 Jan 2011, Christopher J Petrolino wrote: >>>> >>>>> Ok guys I am wondering if anyone can help me out here. I am trying to >>>>> mount a xen .img file. when I try to do a mount -o loop /xen/guest.img >>>>> /mnt/tmp I get a message saying that I need to specify a partition >>>>> type.. What am I missing? >>>>> >>>>> Many thanks in advance, >>>>> >>>>> CJP >>>>> >>>>> _______________________________________________ >>>>> Xen-users mailing list >>>>> Xen-users@xxxxxxxxxxxxxxxxxxx >>>>> http://lists.xensource.com/xen-users >>>>> >> _______________________________________________ >> Xen-users mailing list >> Xen-users@xxxxxxxxxxxxxxxxxxx >> http://lists.xensource.com/xen-users > > _______________________________________________ > Xen-users mailing list > Xen-users@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-users > _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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