Hi!
I am running CentOS 7 on a machine with SSD, and trying to run the fstrim
command.
KVM is installed on a logical volume like this:
[#] lvcreate -L 300G -n lv_vm1 VolGroup
[#] mkfs.xfs /dev/VolGroup/lv_vm1
[#] mkdir /mnt/b_vm_1
[#] mount /dev/VolGroup/lv_vm1 /mnt/b_vm_1
[#] 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’
The file system disk space usage (the relevant parts) looks like this:
[#] df -h
….
/dev/mapper/VolGroup-lv_usr 9,8G 1,6G 8,2G 16% /usr
/dev/mapper/VolGroup-lv_vm1 300G 33M 300G 1% /mnt/b_vm_1
...
After:
- Installing the virtual machine
- Trying that it works
- Turning it off
- Unmounting the logical volume
I run the following command at the host machine:
[#] fstrim -v /usr
The command works fine, and I am able to display the content of the /user
folder.
BUT when I start up the virtual machine from the host again:
[#] virsh start vm1.bergersen1.com
and access the console (that worked before I ran the fstrim command) via:
[#] virsh console vm1.bergersen1.com
. . . the console just stalls, and the virtual machine is not working.
Is there a way I can run fstrim on the host machine without destroying the
virtual machine?
Thanks for input!
Best regards,
Richard Taubo
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