From 6d13bde5622dbbaa29ed25f1742b51d06c0c2798 Mon Sep 17 00:00:00 2001 From: Ger Strikwerda Date: Wed, 25 May 2022 09:49:37 +0200 Subject: [PATCH] kvm examples --- kvm.txt | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 kvm.txt diff --git a/kvm.txt b/kvm.txt new file mode 100644 index 0000000..f3eb7d7 --- /dev/null +++ b/kvm.txt @@ -0,0 +1,90 @@ + +create image: + +ger@ger-lpt-werk:~/vm$ qemu-img create -f qcow2 test-image.qcow2 25G +Formatting 'test-image.qcow2', fmt=qcow2 size=26843545600 cluster_size=65536 lazy_refcounts=off refcount_bits=16 + +ger@ger-lpt-werk:~/vm$ ls -ltr +total 196 +-rw-r--r-- 1 ger ger 197008 apr 8 16:53 test-image.qcow2 + +download iso_image + +create/start vm: + +ger@ger-lpt-werk:~/vm$ qemu-system-x86_64 -cdrom ../iso/ubuntu-server.iso -cpu host -enable-kvm -m 2G -smp 2 -drive file=./test-image.qcow2,format=qcow2 + +start vm after install: + +ger@ger-lpt-werk:~/vm$ qemu-system-x86_64 -cpu host -enable-kvm -m 2G -smp 2 -drive file=./test-image.qcow2,format=qcow2 -name vm01 + +create extra disk: + +ger@ger-lpt-werk:~/vm$ qemu-img create -f qcow2 ./extra_disk.qcow2 5G +Formatting './extra_disk.qcow2', fmt=qcow2 size=5368709120 cluster_size=65536 lazy_refcounts=off refcount_bits=16 + +$ virsh attach-disk vm01 /home/ger/vm/extra_disk.qcow2 vdb --cache none + +virsh run: + +ger@ger-lpt-werk:~/vm$ virt-install --name=vm01 --ram=2048 --vcpus=2 --disk path=./test-image.qcow2 --boot=hd +WARNING No operating system detected, VM performance may suffer. Specify an OS with --os-variant for optimal results. + +Starting install.. + +ger@ger-lpt-werk:~/vm$ virsh destroy vm01 +Domain vm01 destroyed + +ger@ger-lpt-werk:~/vm$ virsh start vm01 +Domain vm01 started + +ger@ger-lpt-werk:~/vm$ virsh list --all + Id Name State +---------------------- + 2 vm01 running + +add disk via dd: + +ger@ger-lpt-werk:~/vm$ dd if=/dev/zero of=./disk_dd.dsk count=5000 bs=1M +5000+0 records in +5000+0 records out +5242880000 bytes (5,2 GB, 4,9 GiB) copied, 6,34483 s, 826 MB/s +ger@ger-lpt-werk:~/vm$ du -sh ./disk_dd.dsk +4,9G ./disk_dd.dsk + +ger@ger-lpt-werk:~/vm$ virsh attach-disk vm01 /home/ger/vm/disk_dd.dsk vdb --cache none +Disk attached successfully + +persistent disk: + +ger@ger-lpt-werk:~/vm$ virsh attach-disk vm01 /home/ger/vm/disk_dd.dsk vdb --persistent --cache none +Disk attached successfully + +create extra disk ala rdms: + +ger@ger-lpt-werk:~/vm$ qemu-img create -o preallocation=metadata -f qcow2 rdms-prod.qcow2 2G +Formatting 'rdms-prod.qcow2', fmt=qcow2 size=2147483648 cluster_size=65536 preallocation=metadata lazy_refcounts=off refcount_bits=16 + +ger@ger-lpt-werk:~/vm$ virsh attach-disk vm01 --target vdd --persistent --driver qemu --subdriver qcow2 --source /home/ger/vm/rdms-prod.qcow2 +Disk attached successfully + +root@irods01:/home/ger# lsblk +NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT +sda 8:0 0 25G 0 disk +├─sda1 8:1 0 1M 0 part +├─sda2 8:2 0 1.5G 0 part /boot +└─sda3 8:3 0 23.5G 0 part + └─ubuntu--vg-ubuntu--lv 253:0 0 11.8G 0 lvm / +vda 252:0 0 4.9G 0 disk +vdb 252:16 0 2G 0 disk + +[Wed Apr 13 07:24:06 2022] pci 0000:00:09.0: [1af4:1001] type 00 class 0x010000 +[Wed Apr 13 07:24:06 2022] pci 0000:00:09.0: reg 0x10: [io 0x0000-0x007f] +[Wed Apr 13 07:24:06 2022] pci 0000:00:09.0: reg 0x14: [mem 0x00000000-0x00000fff] +[Wed Apr 13 07:24:06 2022] pci 0000:00:09.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref] +[Wed Apr 13 07:24:06 2022] pci 0000:00:09.0: BAR 4: assigned [mem 0x100000000-0x100003fff 64bit pref] +[Wed Apr 13 07:24:06 2022] pci 0000:00:09.0: BAR 1: assigned [mem 0x80000000-0x80000fff] +[Wed Apr 13 07:24:06 2022] pci 0000:00:09.0: BAR 0: assigned [io 0x1000-0x107f] +[Wed Apr 13 07:24:06 2022] virtio-pci 0000:00:09.0: enabling device (0000 -> 0003) +[Wed Apr 13 07:24:06 2022] virtio_blk virtio3: [vdb] 4194304 512-byte logical blocks (2.15 GB/2.00 GiB) +