On 01/15/2015 04:29 PM, Richard Taubo wrote: > Hi! > > As mentioned in an earlier mail I have installed > KVM on a logical volume like this (CentOS 7): > [#] lvcreate -L 300G -n lv_vm1 VolGroup > [#] virt-install --name=vm1.mydomain.com \ > --disk path=/dev/VolGroup/lv_vm1 \ > --ram=8192 --os-type=linux --os-variant=rhel7 \ > --vcpus=8 --check-cpu \ > --network bridge:br0 --nographics \ > --location=/usr/local/src/linux_isos/CENTOS7/CentOS-7.0-1406-x86_64-Minimal.iso \ > --extra-args 'ks=http://www.mydomain.com/anaconda-ks.cfg ksdevice=eth0 \ > ip=192.168.19.2 netmask=255.255.255.192 dns=8.8.8.8 gateway=192.168.19.1 console=ttyS0,115200n8 serial’ > > I would like to run fstrim from within the VM client (I have fstrim working on the VM host machine). > Running fstrim from within the VM gives me errors like this: > "fstrim: /usr: FITRIM ioctl failed: Operation not supported" > > Is it possible to run fstrim on the VM client with the setup described above? > > Thanks for any feedback! There's some details here: http://dustymabe.com/2013/06/11/recover-space-from-vm-disk-images-by-using-discardfstrim/ I think it boils down to using a scsi disk, and using discard=unmap. The blog post doesn't say it but modern virt-install supports the --disk discard option, so you don't need to edit the XML separately. - Cole _______________________________________________ virt-tools-list mailing list virt-tools-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/virt-tools-list
