Re: How do you unsparsify a qcows2 file?

On 12/12/22 17:20, Samuel Sieb wrote: On 12/12/22 13:54, ToddAndMargo via users wrote: On 12/12/22 12:08, ToddAndMargo via users wrote: On 12/12/22 06:43, Tom Horsley wrote: On Mon, 12 Dec 2022 06:33:15 -0800 ToddAndMargo via users wrote: This it? dd if=/dev/zero of=/sometempfile Seems

Re: How do you unsparsify a qcows2 file?

On 12/12/22 17:22, Samuel Sieb wrote: On 12/12/22 12:08, ToddAndMargo via users wrote: On 12/12/22 06:43, Tom Horsley wrote: On Mon, 12 Dec 2022 06:33:15 -0800 ToddAndMargo via users wrote: This it? dd if=/dev/zero of=/sometempfile Seems like that would work. Might need to do it as root

Re: How do you unsparsify a qcows2 file?

On 12/12/22 12:08, ToddAndMargo via users wrote: On 12/12/22 06:43, Tom Horsley wrote: On Mon, 12 Dec 2022 06:33:15 -0800 ToddAndMargo via users wrote: This it? dd if=/dev/zero of=/sometempfile Seems like that would work. Might need to do it as root in case the kernel doesn't allow an

Re: How do you unsparsify a qcows2 file?

On 12/12/22 13:54, ToddAndMargo via users wrote: On 12/12/22 12:08, ToddAndMargo via users wrote: On 12/12/22 06:43, Tom Horsley wrote: On Mon, 12 Dec 2022 06:33:15 -0800 ToddAndMargo via users wrote: This it? dd if=/dev/zero of=/sometempfile Seems like that would work. Might need to do

Re: How do you unsparsify a qcows2 file?

On 12/12/22 14:17, Patrick O'Callaghan wrote: On Mon, 2022-12-12 at 13:54 -0800, ToddAndMargo via users wrote: dump/restore restored a "raw" file perfectly. Interesting.  sha256sum came back different for before and after  (.000 is before) # sha256sum KVM-W11.raw KVM-W11.raw.000

Re: How do you unsparsify a qcows2 file?

On Mon, 2022-12-12 at 13:54 -0800, ToddAndMargo via users wrote: > dump/restore restored a "raw" file perfectly. > > Interesting.  sha256sum came back different for > before and after  (.000 is before) > > # sha256sum KVM-W11.raw KVM-W11.raw.000 > >

Re: How do you unsparsify a qcows2 file?

You might want to think about setting a size on that file. dd can be pretty destructive as well as useful. I like to randomize file with it before truncating the contents. For example, if a file is 4096 bytes, I would use, 'dd if=/dev/zero of=/file bs=4096 count=1 conv=notrunc. Just so there

Re: How do you unsparsify a qcows2 file?

On 12/12/22 12:08, ToddAndMargo via users wrote: On 12/12/22 06:43, Tom Horsley wrote: On Mon, 12 Dec 2022 06:33:15 -0800 ToddAndMargo via users wrote: This it? dd if=/dev/zero of=/sometempfile Seems like that would work. Might need to do it as root in case the kernel doesn't allow an

Re: How do you unsparsify a qcows2 file?

On 12/12/22 06:43, Tom Horsley wrote: On Mon, 12 Dec 2022 06:33:15 -0800 ToddAndMargo via users wrote: This it? dd if=/dev/zero of=/sometempfile Seems like that would work. Might need to do it as root in case the kernel doesn't allow an ordinary user to use up all the free space on a disk.

Re: How do you unsparsify a qcows2 file?

On Mon, Dec 12, 2022 at 9:56 AM ToddAndMargo via users wrote: > > On 12/12/22 06:49, Mauricio Tavares wrote: > > I use logical volumes for the virtual machines I care about > > What is that? My desktop's (a VM guest) drive [user@vmhost ~]# sudo lvs vmhost_vg1 LVVG

Re: How do you unsparsify a qcows2 file?

On Mon, 12 Dec 2022 06:55:15 -0800 ToddAndMargo via users wrote: > I wonder if qemu-ing convert will convert from > qcows2 to qcows2? I will see! Yep, that's how I always sparsified my files before the virt-sparsify tool existed. Write zeroes till you run out of space (thus making all the free

Re: How do you unsparsify a qcows2 file?

On 12/12/22 06:49, Mauricio Tavares wrote: I use logical volumes for the virtual machines I care about What is that? ___ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora

Re: How do you unsparsify a qcows2 file?

On 12/12/22 06:43, Tom Horsley wrote: On Mon, 12 Dec 2022 06:33:15 -0800 ToddAndMargo via users wrote: This it? dd if=/dev/zero of=/sometempfile Seems like that would work. Might need to do it as root in case the kernel doesn't allow an ordinary user to use up all the free space on a disk.

Re: How do you unsparsify a qcows2 file?

On Mon, Dec 12, 2022 at 9:44 AM Tom Horsley wrote: > > On Mon, 12 Dec 2022 06:33:15 -0800 > ToddAndMargo via users wrote: > > > This it? > > > > dd if=/dev/zero of=/sometempfile > > Seems like that would work. Might need to do it as root in case the > kernel doesn't allow an ordinary user to use

Re: How do you unsparsify a qcows2 file?

On Mon, 12 Dec 2022 06:33:15 -0800 ToddAndMargo via users wrote: > This it? > > dd if=/dev/zero of=/sometempfile Seems like that would work. Might need to do it as root in case the kernel doesn't allow an ordinary user to use up all the free space on a disk. And don't forget "rm /sometempfile"

Re: How do you unsparsify a qcows2 file?

On 12/12/22 06:25, Tom Horsley wrote: On Mon, 12 Dec 2022 04:57:08 -0800 ToddAndMargo via users wrote: Anyone know how to unsparsify a qcows2 file? Boot up the virtual machine and write zeroes to a temp file on that disk till you get out of space errors is one way. Basically stop after the

Re: How do you unsparsify a qcows2 file?

On Mon, 12 Dec 2022 04:57:08 -0800 ToddAndMargo via users wrote: > Anyone know how to unsparsify a qcows2 file? Boot up the virtual machine and write zeroes to a temp file on that disk till you get out of space errors is one way. Basically stop after the first step of sparsifying :-).

How do you unsparsify a qcows2 file?

Hi All, Anyone know how to unsparsify a qcows2 file? https://libguestfs.org/virt-sparsify.1.html Many thanks, -T ___ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code