Re: [libvirt] Regarding guest-file-write
On Tue, Jun 24, 2014 at 06:20:16PM +0530, Puneet Bakshi wrote:
Hi,
>From host, I wrote 26 alphabets in guest file (/tmp/testqga) using
guest-file-write guest agent command (logs pasted below). I faced 2 issues
when doing that.
1a. It could wrote only 18bytes! Why could it not write all 26 characters?
Are we supposed to track how much data is written and need to resend the
remaining one?
1b. What is the limit of data, I can send in one guest-file-write command?
2. In the guest, file data seems to be different. Am I doing something
wrong here?
Yes, the command does not take raw data, it takes base-64 encoded data.
So those 26 characters you specified were base64 decoded which gives
you 18 bytes of raw data.
The clue is in the variable name 'buf-b64' - a shorthand for base64:
[root@sdsr720-14 ~]# virsh qemu-agent-command vm_04 '{"
execute":"guest-file-write",
"arguments":{"handle":1000,"buf-b64":"abcdefghijklmnopqrstuvwxyz"}}'
{"return":{"count":18,"eof":false}}
Regards,
Daniel
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