libvirt/src/locking/test_libvirt_sanlock.aug.in

module Test_libvirt_sanlock =
  ::CONFIG::

   test Libvirt_sanlock.lns get conf =
{ "auto_disk_leases" = "1" }
{ "disk_lease_dir" = "/var/lib/libvirt/sanlock" }
{ "host_id" = "1" }
{ "require_lease_for_disks" = "1" }
Support loading a configuration file for sanlock plugin Introduce a configuration file with a single parameter 'require_lease_for_disks', which is used to decide whether it is allowed to start a guest which has read/write disks, but without any leases. * libvirt.spec.in: Add sanlock config file and augeas lens * src/Makefile.am: Install sanlock config file and augeas lens * src/locking/libvirt_sanlock.aug: Augeas master lens * src/locking/test_libvirt_sanlock.aug: Augeas test file * src/locking/sanlock.conf: Example sanlock config * src/locking/lock_driver_sanlock.c: Wire up loading of configuration file 2011-06-14 08:20:49 +00:00			`module Test_libvirt_sanlock =`
Autogenerate augeas test case from default config files When adding new config file parameters, the corresponding additions to the augeas lens' are constantly forgotten. Also there are augeas test cases, these don't catch the error, since they too are never updated. To address this, the augeas test cases need to be auto-generated from the example config files. * build-aux/augeas-gentest.pl: Helper to generate an augeas test file, substituting in elements from the example config files * src/Makefile.am, daemon/Makefile.am: Switch to auto-generated augeas test cases * daemon/test_libvirtd.aug, daemon/test_libvirtd.aug.in, src/locking/test_libvirt_sanlock.aug, src/locking/test_libvirt_sanlock.aug.in, src/lxc/test_libvirtd_lxc.aug, src/lxc/test_libvirtd_lxc.aug.in, src/qemu/test_libvirtd_qemu.aug, src/qemu/test_libvirtd_qemu.aug.in: Remove example config file data, replacing with a ::CONFIG:: placeholder Signed-off-by: Daniel P. Berrange <berrange@redhat.com> 2012-05-25 10:14:15 +00:00			`::CONFIG::`
Support loading a configuration file for sanlock plugin Introduce a configuration file with a single parameter 'require_lease_for_disks', which is used to decide whether it is allowed to start a guest which has read/write disks, but without any leases. * libvirt.spec.in: Add sanlock config file and augeas lens * src/Makefile.am: Install sanlock config file and augeas lens * src/locking/libvirt_sanlock.aug: Augeas master lens * src/locking/test_libvirt_sanlock.aug: Augeas test file * src/locking/sanlock.conf: Example sanlock config * src/locking/lock_driver_sanlock.c: Wire up loading of configuration file 2011-06-14 08:20:49 +00:00
			`test Libvirt_sanlock.lns get conf =`
Support automatic creation of leases for disks in sanlock The current sanlock plugin requires a central management application to manually add <lease> elements to each guest, to protect resources that are assigned to it (eg writable disks). This makes the sanlock plugin useless for usage in more ad hoc deployment environments where there is no central authority to associate disks with leases. This patch adds a mode where the sanlock plugin will automatically create leases for each assigned read-write disk, using a md5 checksum of the fully qualified disk path. This can work pretty well if guests are using stable disk paths for block devices eg /dev/disk/by-path/XXXX symlinks, or if all hosts have NFS volumes mounted in a consistent pattern. The plugin will create one lockspace for managing disks with filename /var/lib/libvirt/sanlock/__LIBVIRT__DISKS__. For each VM disks, there will be another file to hold a lease /var/lib/libvirt/sanlock/5903e5d25e087e60a20fe4566fab41fd Each VM disk lease is usually 1 MB in size. The script virt-sanlock-cleanup should be run periodically to remove unused lease files from the lockspace directory. To make use of this capability the admin will need to do several tasks: - Mount an NFS volume (or other shared filesystem) on /var/lib/libvirt/sanlock - Configure 'host_id' in /etc/libvirt/qemu-sanlock.conf with a unique value for each host with the same NFS mount - Toggle the 'auto_disk_leases' parameter in qemu-sanlock.conf Technically the first step can be skipped, in which case sanlock will only protect against 2 vms on the same host using the same disk (or the same VM being started twice due to error by libvirt). * src/locking/libvirt_sanlock.aug, src/locking/sanlock.conf, src/locking/test_libvirt_sanlock.aug: Add config params for configuring auto lease setup * libvirt.spec.in: Add virt-sanlock-cleanup program, man page * tools/virt-sanlock-cleanup.in: Script to purge unused disk resource lease files 2011-06-14 08:29:00 +00:00			`{ "auto_disk_leases" = "1" }`
			`{ "disk_lease_dir" = "/var/lib/libvirt/sanlock" }`
			`{ "host_id" = "1" }`
Support loading a configuration file for sanlock plugin Introduce a configuration file with a single parameter 'require_lease_for_disks', which is used to decide whether it is allowed to start a guest which has read/write disks, but without any leases. * libvirt.spec.in: Add sanlock config file and augeas lens * src/Makefile.am: Install sanlock config file and augeas lens * src/locking/libvirt_sanlock.aug: Augeas master lens * src/locking/test_libvirt_sanlock.aug: Augeas test file * src/locking/sanlock.conf: Example sanlock config * src/locking/lock_driver_sanlock.c: Wire up loading of configuration file 2011-06-14 08:20:49 +00:00			`{ "require_lease_for_disks" = "1" }`