write-file API call doesn't work as supposed

[DmitryShm]

Hi, friends.

I'm the Proxmox VE 5.2 user and would like to ask you about write-file QEmu agent request of VE API. Using the following command sequence to write a file on QEmu VM with the "system-test" snapshot created

$ robotLoginData=$(curl -k -d "username=$pveLogin@pve&password=$pvePassword" [https]://$pveHostPort/api2/json/access/ticket)
$ robotCSRFPreventionToken=$(echo $robotLoginData | jq -r '.data.CSRFPreventionToken')
$ robotTicket=$(echo $robotLoginData | jq -r '.data.ticket')
$ curl -k -b "PVEAuthCookie=$robotTicket" -H "CSRFPreventionToken: $robotCSRFPreventionToken" -X POST [https]://$pveHostPort/api2/json/nodes/$pveNode/qemu/$pveVm/snapshot/system-test/rollback
$ curl -k -b "PVEAuthCookie=$robotTicket" -H "CSRFPreventionToken: $robotCSRFPreventionToken" -d "content=12345" -d "file=12345.txt" -X POST [https]://$pveHostPort/api2/json/nodes/$pveNode/qemu/$pveVm/agent/file-write

I want to create 12345.txt file on the remote VM. Everything is fine, except the last command, which returns

{"data":null}

And it's stated the agent/file-write command correct answer when it succeeded. But after the command succeeds there's no file 12345.txt on VM exists.

If you have used VE API please help me to understand how to manage the write-file QEmu agent requests.

 

[dcsapak]

works here without problem, maybe you looked in the wrong folder?

if you do not specify an absolute path (like you did with '12345.txt') it turns up in the root directory ('/12345.txt')

 

[DmitryShm]

What's the version of your QEmu agent?

 

[dcsapak]

What's the version of your QEmu agent?

in the vm i tested it was 2.8.1 (it was a debian stretch vm)

 

[DmitryShm]

When I call

$ curl -k -b "PVEAuthCookie=$robotTicket" [https]://$pveHostPort/api2/json/nodes/$pveNode/qemu/$pveVm/agent/info | python -m json.tool

I get

{
    "data": {
        "result": {
            "supported_commands": [
                {
                    "enabled": true,
                    "name": "guest-set-user-password"
                },
                {
                    "enabled": true,
                    "name": "guest-get-vcpus"
                },
                {
                    "enabled": true,
                    "name": "guest-suspend-ram"
                },
                {
                    "enabled": true,
                    "name": "guest-suspend-disk"
                },
                {
                    "enabled": true,
                    "name": "guest-fsfreeze-thaw"
                },
                {
                    "enabled": true,
                    "name": "guest-fsfreeze-freeze"
                },
                {
                    "enabled": true,
                    "name": "guest-fsfreeze-status"
                },
                {
                    "enabled": true,
                    "name": "guest-shutdown"
                },
                {
                    "enabled": true,
                    "name": "guest-info"
                },
                {
                    "enabled": true,
                    "name": "guest-set-time"
                },
                {
                    "enabled": true,
                    "name": "guest-get-time"
                },
                {
                    "enabled": true,
                    "name": "guest-ping"
                },
                {
                    "enabled": true,
                    "name": "guest-sync"
                },
                {
                    "enabled": true,
                    "name": "guest-sync-delimited"
                }
            ],
            "version": "0.12.1"
        }
    }
}

So the version doesn't match yours and there's no support for file-write command . Where can I get new versions of QEmu agents for windows VMs? I got mine from virtio-win-0.1.141.iso (fedorapeople site).

 

[dcsapak]

So the version doesn't match yours and there's no support for file-write command . Where can I get new versions of QEmu agents for windows VMs? I got mine from virtio-win-0.1.141.iso (fedorapeople site).

here you can find the current virtio-win isos and qemu-ga installers: https://docs.fedoraproject.org/en-U...tual-machines-using-virtio-drivers/index.html

 

[DmitryShm]

I've used virtio-win-0.1.171.iso and everything worked out. Thank you!

virtio-win-0.1.171.iso (the latest package) is quite strange. When I updated QEmuAgent the agent/info command told me that it's version is "100.0.0".

 

[DmitryShm]

What's the format of agent/exec command parameters when calling it with the curl?