Hi All,
I’m using qmp command via “virsh qemu-monitor-command” to perform block related
jobs.
And in my case, I execute block-commit to commit the changes in the top image
to the base image which is encrypted.
So in the base parameter, I need a json string which is single quoted to
support the encryption parameters.
However, the virsh is failed to parse the whole json qmp command.
Attempt 1: Single quote without backflash, failed
root@host:~# virsh qemu-monitor-command i-9wdfw2x8 "{\"execute\":
\"block-commit\", \"arguments\": { \"device\": \"drive-virtio-disk2\",
\"job-id\": \"job100\",
\"base\":'json:{\"encrypt.key-secret\":\"vol-38973xjl.secret\",\"driver\":\"qcow2\",\"file\":{\"driver\":\"file\",\"filename\":\"/pitrix/data/container/vol-38973xjl.img\"}}',
\"top\": \"/pitrix/data/container/vol-38973xjl_ss-2tw7v0mm.img\"}}"
error: internal error: cannot parse json {"execute": "block-commit",
"arguments": { "device": "drive-virtio-disk2", "job-id": "job100",
"base":'json:{"encrypt.key-secret":"vol-38973xjl.secret","driver":"qcow2","file":{"driver":"file","filename":"/pitrix/data/container/vol-38973xjl.img"}}',
"top": "/pitrix/data/container/vol-38973xjl_ss-2tw7v0mm.img"}}: lexical error:
invalid char in json text.
, "job-id": "job100", "base":'json:{"encrypt.key-secret":"vo
(right here) ------^
Attempt 2: Single quote with backflash, failed
root@host:~# virsh qemu-monitor-command i-9wdfw2x8 "{\"execute\":
\"block-commit\", \"arguments\": { \"device\": \"drive-virtio-disk2\",
\"job-id\": \"job100\",
\"base\":\'json:{\"encrypt.key-secret\":\"vol-38973xjl.secret\",\"driver\":\"qcow2\",\"file\":{\"driver\":\"file\",\"filename\":\"/pitrix/data/container/vol-38973xjl.img\"}}\',
\"top\": \"/pitrix/data/container/vol-38973xjl_ss-2tw7v0mm.img\"}}"
error: internal error: cannot parse json {"execute": "block-commit",
"arguments": { "device": "drive-virtio-disk2", "job-id": "job100",
"base":\'json:{"encrypt.key-secret":"vol-38973xjl.secret","driver":"qcow2","file":{"driver":"file","filename":"/pitrix/data/container/vol-38973xjl.img"}}\',
"top": "/pitrix/data/container/vol-38973xjl_ss-2tw7v0mm.img"}}: lexical error:
invalid char in json text.
, "job-id": "job100", "base":\'json:{"encrypt.key-secret":"v
(right here) ------^
My libvirt version is 5.7.0, libyajl is 2.1.0.
Thanks,
Peter Luo
