This patchset enables the core of the quorum mechanism.
The num_children reads are compared to get the majority version and if this
version exists more than threshold times the guest won't see the error at all.
If a block is corrupted or if an error occurs during an IO or if the quorum
cannot be established QMP events are used to report to the management.
Use gnutls's SHA-256 to compare versions.
--enable-quorum must be used to enable the feature.
Signed-off-by: Benoit Canet <benoit@irqsave.net>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Cc: qemu-trivial@nongnu.org
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
qemu.org is held by a third-party and no core community contributor has
access to the DNS configuration. This leaves the website exposed to
outages due to DNS issues or IP address changes. For example, if the
web server IP address needs to change we cannot guarantee qemu.org will
point to it!
The newer qemu-project.org domain name is owned by Anthony Liguori
<anthony@codemonkey.ws>. You can confirm this by querying the whois
information. Also note that the #qemu IRC channel topic already
references qemu-project.org.
Short of having a dedicated legal entity to hold the domain name on
behalf of the community, qemu-project.org seems like the safest bet.
Let's replace references to qemu.org with qemu-project.org.
Note that git-submodule(1) does not detect URL changes. The following
commands clear out and re-initialize all submodules to ensure you are
using the latest URLs:
$ git submodule deinit . # you'll be warned if you have local changes
$ rm -rf .git/modules # also clear cached .git/ directories
$ git submodule update --init
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1381495958-8306-1-git-send-email-stefanha@redhat.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
Drop unneeded info, fix some of the examples and rename QEMU Monitor
Protocol to QEMU Machine Protocol.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
