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[Qemu-devel] [PATCH v4] block: Add support for Secure Shell (ssh) block
From: |
Richard W.M. Jones |
Subject: |
[Qemu-devel] [PATCH v4] block: Add support for Secure Shell (ssh) block device. |
Date: |
Wed, 27 Mar 2013 15:57:28 +0000 |
This is version 4 of the Secure Shell (ssh) block device.
Links to earlier versions:
v1: http://www.mail-archive.com/address@hidden/msg162605.html
v2: http://www.mail-archive.com/address@hidden/msg162730.html
v3: http://www.mail-archive.com/address@hidden/msg162805.html
The version supports:
- image creation, so eg. 'qemu-img create' can be used
- extending the file, so qcow2 works
- file.host, file.port, file.path, file.user properties (or ssh:// URLs)
- asynch read/write using coroutines
- ssh-agent authentication
- checks the remote host key against known_hosts
This version is robust and works for me reliably. Performance of
linear reading (eg. qemu-img convert ssh://...) is very fast indeed.
Random access performance is fairly poor (about the same as sshfs).
However it's usable remotely for booting and running guests, even over
relatively slow wifi links.
Rich.
- [Qemu-devel] [PATCH v4] block: Add support for Secure Shell (ssh) block device.,
Richard W.M. Jones <=