libvirt:libvirt
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libvirt:libvirt [2014/08/07 09:36] – [Restore] deva | libvirt:libvirt [2016/09/15 18:58] – deva | ||
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======Libvirt====== | ======Libvirt====== | ||
+ | =====Resize qcov2 image===== | ||
+ | < | ||
+ | # Shut down vm | ||
+ | |||
+ | # On host (to grow 8GB): | ||
+ | qemu-img resize / | ||
+ | |||
+ | # Start vm | ||
+ | # Assuming lvm logical volume inside extended partition... | ||
+ | # fdisk -l should now show the new disk size. | ||
+ | # run parted | ||
+ | (parted) resizepart 2 | ||
+ | 16GB | ||
+ | (parted) resizepart 5 | ||
+ | 16GB | ||
+ | (parted) quit | ||
+ | |||
+ | # reboot vm | ||
+ | |||
+ | # extend lvm | ||
+ | lvextend -l +100%FREE / | ||
+ | |||
+ | # finally resize file system | ||
+ | resize2fs / | ||
+ | </ | ||
+ | |||
+ | =====List VMs===== | ||
+ | < | ||
+ | virsh list --all | ||
+ | </ | ||
=====Copy a VM===== | =====Copy a VM===== | ||
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cd / | cd / | ||
- | # Pause the VM | + | # Dump the state (memory, network etc...) |
- | virsh suspend | + | virsh save foobar |
# Dump the VM configuration | # Dump the VM configuration | ||
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virsh dumpxml foobar | grep ' | virsh dumpxml foobar | grep ' | ||
cp / | cp / | ||
+ | </ | ||
- | # Dump the state (memory, network etc...) | + | At this point the complete VM state has been stored but the VM is stopped. |
- | virsh save foobar | + | In order to resume the VM from the point where it left off, it must be resumed from the just saved state: |
+ | < | ||
+ | virsh restore | ||
</ | </ | ||
+ | **IMPORTANT**: | ||
+ | |||
+ | **NOTE**: Using ntpd to sync a clock that is more than a matter of seconds out-of-sync might require special attention to its config file as it might refuse to synchronize the clock because it is too much out of sync. | ||
+ | |||
+ | FIXME: Use "virsh blockcopy" | ||
====Restore==== | ====Restore==== | ||
< | < | ||
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# Restore the state (memory, network etc...) | # Restore the state (memory, network etc...) | ||
virsh restore foobar.state | virsh restore foobar.state | ||
- | |||
- | # Resume the VM | ||
- | virsh resume foobar | ||
</ | </ | ||
+ | **WARNING**: |
libvirt/libvirt.txt · Last modified: 2016/09/15 21:18 by deva