On 06/24/2011 07:02 AM, Daniel P. Berrange wrote: > Add a page which documents how to configure lock managers, > focusing on use of sanlock with the QEMU/KVM driver > > * docs/locking.html.in: Docs about lock managers > * docs/sitemap.html.in: Add lock manager config to > the deployment section > --- > docs/locking.html.in | 212 ++++++++++++++++++++++++++++++++++++++++++++++++++ > docs/sitemap.html.in | 4 + > 2 files changed, 216 insertions(+), 0 deletions(-) > create mode 100644 docs/locking.html.in Docs are always nice! > + <p> > + Once the sanlock daemon is running, the next step is to > + configure the libvirt sanlock plugin. There is a separate > + configuration file for each libvirt driver that is using > + sanlock. For QEMU, we will edit <code>/etc/libvirt/qemu-sanlock.conf</code> > + There is one mandatory parameter that needs to be set, > + the <code>host_id</code>. This is a integer between > + 1 and 2000, which must be set to a <strong>unique</strong> > + value on each host running virtual machines How does this fit in with the max_hosts configuration value? > + <p> > + The sanlock plugin needs to create leases in a directory > + that is on a filesystem shared between all hosts running > + virtual machines. Obvious choices for this include NFS, > + or GFS2. The libvirt sanlock plugin expects its lease When listing two items, no comma is necessary: s/NFS,/NFS/ > + <p> > + The QEMU/KVM driver is fully integrated with the lock > + manager framework as of release <span>0.9.3</span>. > + The out of the box configuration, however, currently > + uses the <strong>nop</strong> lock manager plugin. > + To get protection for disks, it is thus neccessary s/neccessary/necessary/ > + <p> > + It should be obvious that for locking to work correctly, every > + host running virtual machines should have storage configured > + in the same way. The easiest way todo this is to use the libvirt s/todo/to do/ ACK with nits fixed. -- Eric Blake eblake@xxxxxxxxxx +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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