This is more to my likings : zerofree see : http://intgat.tigress.co.uk/rmy/uml/index.html
To bad its only for ext2 and ext3 Rob 2013/8/21 Rob Verduijn <[email protected]>: > Hi, > > virt-sparsify is definitely going to make the shrinking of qcow2 > images less annoying, but it still produces a new disk image and > requires downtime for the vm. > > The other tools in guestfs look very interesting as well, they will > make life a lot easier. > > Thanx for the tip > Rob > > > > > > 2013/8/20 Jim Fehlig <[email protected]>: >> Rob Verduijn wrote: >>> Hello all, >>> >>> I'm looking for a clever way to shrink qcow2 images. >>> >> >> Thanks for all the info you provided in this thread! >> >> I'd like to add that virt-sparsify, virt-resize, and the other virt-* >> tools in the guestfs-tools package are also useful for manipulating images. >> >> Regards, >> Jim >> >>> what I do now is : >>> >>> 1 in the vm delete the files I don't need (tempfiles, spoolfiles, >>> junkfiles, etc, etc) >>> 2 fill the empty space with zeros >>> dd if=/dev/zero of=bigfile bs=1024k ; sync ; rm bigfile ; sync >>> 3 shut down the vm >>> 4 convert the qcow2 to a fresh new qcow2 >>> qemu-img convert -c -O qcow2 orig.qcow2 shrunk.qcow2 >>> mv orig.qcow2 orig.qcow2.bak >>> mv shrunk.qcow2 orig.qcow2 >>> 5 test the vm >>> 6 delete the backup if it works >>> >>> Now this is fine if you got plenty space and just want to tidy up a >>> bit before it turns bad. >>> >>> But what if there is no space, and adding extra partitions is not that easy. >>> (imagine an offsite, far off location that is a real pain to get into >>> due to serious security hassle) >>> >>> Or if you are me and are seriously annoyed by the cumbersome exercise >>> above and have a gut feeling that there should be a more elegant way >>> (preferably one without downtime) >>> >>> The above exercise requires to be done on all the partitions of the >>> qcow2 image if there is more than one, adding to my irritation of the >>> exercise. >>> >>> Does anybody have any ideas on a more elegant solution ? >>> >>> cheers >>> Rob >>> -- To unsubscribe, e-mail: [email protected] To contact the owner, e-mail: [email protected]
