Exactly. You can use 'qemu-img convert' to recreate the image.
If you use recent libvirt/qemu and guest os, you can use volume snapshot on running vms, the memory will be lost but image will not be touched. see https://github.com/apache/cloudstack/pull/5297 -Wei On Thursday, 8 December 2022, vas...@gmx.de <vas...@gmx.de> wrote: > Hi Wei, > > indeed. I am using snapshots every now and then, but i delete them quiet > fast. > From your question i would assume that the vm-snapshots are 'expending' the > Root-volume of the VM and when deleting the snapshot the volume won't be > shrinked to the "original" size? > > Regards, > Chris > > Am Do., 8. Dez. 2022 um 22:31 Uhr schrieb Wei ZHOU <ustcweiz...@gmail.com > >: > > > Do you use vm snapshot or download volume of running vms ? > > > > -Wei > > > > > > On Thursday, 8 December 2022, vas...@gmx.de <vas...@gmx.de> wrote: > > > > > Hi everyone, > > > > > > today i found some strange things going on in my setup and i currently > > > lacking a idea where to start looking for debugging. > > > > > > Running currently CS 4.17.0.1 i noticed that the actual on-disk-size on > > our > > > nfs-storage isn't matching the configured volume-size in CS Management. > > > We are using kvm only. > > > As of now i found multiple machines which are using a 50GB sized > service > > > offering for creation of root volume, which are bigger then 100GB on > the > > > actual storage. > > > > > > Connecting into the VMs and checking the amount of storage the VM is > > > thinking it is using is even less; for example: > > > > > > VM with 50GB thin provisioned root volume; shown correctly in mgmt and > db > > > -> used ammount of storage according to OS: 21GB of 50GB -> size on > > > nfs-storage for the volume-file: 120GB > > > > > > I checked the values inside the CS DB as well as the settings for the > > > serviceofferings and everything seems to be completely fine. > > > Also the nfs server settings are looking good. > > > > > > Did anybody has a suggestion on where to look into? As of know it > seems i > > > am waisting a lot of storage without any particular reason. > > > Regards. > > > > > >
