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[Qemu-devel] blockdev-add I/O throttling parameters
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] blockdev-add I/O throttling parameters |
Date: |
Mon, 20 Feb 2017 15:30:12 +0000 |
User-agent: |
Mutt/1.7.1 (2016-10-04) |
I/O throttling parameters are missing from blockdev-add. Is this
intentional?
I can imagine two solutions that do not need these parameters in
blockdev-add:
1. I/O throttling is implemented by a BlockDriver. Users are expected
to create the BDS themselves. This is a little awkward since
query-block *does* include the throttling parameters in its output
and we must preserve this behavior for existing users.
2. block_set_io_throttle must be used after blockdev-add. Suboptimal
because issuing two commands is not atomic (use transaction?).
Thoughts?
Stefan
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Stefan Hajnoczi <=