Thick to Thin VM Disks


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16 minutes ago, jonathanm said:

Are you sure? The default I believe for raw is sparse, unless you copied the vdisk file using something that un-sparsified it. You should be able to use


cp --sparse=always

to make the file sparse again.

That is possible, I can't remember to be honest.

 

Ill give this a go and post back. Thanks for responding!

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9 minutes ago, Mr_Jay84 said:

No change in sizes as they still eat up 60G when in they're actually only half full.

That's the allocated size, not the actually used space, you can check with ls:

 

root@Tower1:~# ls -lskh /mnt/cache/VMs/Win10/
total 27G
27G -rw-rw-rw- 1 root users 60G Jul 13 15:52 vdisk1.img

27GB used, 60GB allocated

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3 hours ago, johnnie.black said:

That's the allocated size, not the actually used space, you can check with ls:

 


root@Tower1:~# ls -lskh /mnt/cache/VMs/Win10/
total 27G
27G -rw-rw-rw- 1 root users 60G Jul 13 15:52 vdisk1.img

27GB used, 60GB allocated

I ran the command you specified and got a similar return however other VMs created with qcow2 show correctly, also when copying to my NAS for backup the vdisk1 & vdisk2 takes up the full 60G

 

fedora.PNG.adf07d7ffe0323a267dd3fdf0425fa91.PNG

Fedora shows correctly which was created with qcow2 and has 30G allocated.

 

 

 

win7.PNG.fa4d5820ded31928af2c6dceeff6e390.PNG

 

Windows 7 Game Server with vdisk1 being an offender, vdisk2 was created using qcow2 and has 60G allocated.

 

 

1896300125_windows10.PNG.c96fd6dfcf596595b6920ea4c2e114b8.PNG

 

Windows 10 with vdisk1 & vdisk2 showing the full 60G despite the below....

 

Capture2.PNG.258494d8ef2a041afcbbc131172a3f82.PNG

 

Edited by Mr_Jay84
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2 minutes ago, Mr_Jay84 said:

also when copying to my NAS for backup the vdisk1 & vdisk2 takes up the full 60G

You'd need to copy with the --sparse-always flag, assuming the NAS filesystem supports that.

 

QCOW2 are compressed images, so they compress the zeros, i.e., all the blank space.

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