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import os
import tempfile
import sanlock
HOST_ID = 1
LOCKSPACE_NAME = "lockspace1"
RESOURCE_NAME = "resource1"
def main():
print "Creating the sanlock disk"
fd, disk = tempfile.mkstemp()
os.close(fd)
offset = sanlock.get_alignment(disk)
SNLK_DISKS = [(disk, offset)]
print "Registering to sanlock"
fd = sanlock.register()
print "Initializing '%s'" % (LOCKSPACE_NAME,)
sanlock.init_lockspace(LOCKSPACE_NAME, disk)
print "Initializing '%s' on '%s'" % (RESOURCE_NAME, LOCKSPACE_NAME)
sanlock.init_resource(LOCKSPACE_NAME, RESOURCE_NAME, SNLK_DISKS)
print "Acquiring the id '%i' on '%s'" % (HOST_ID, LOCKSPACE_NAME)
sanlock.add_lockspace(LOCKSPACE_NAME, HOST_ID, disk)
try:
print "Acquiring '%s' on '%s'" % (RESOURCE_NAME, LOCKSPACE_NAME)
sanlock.acquire(LOCKSPACE_NAME, RESOURCE_NAME, SNLK_DISKS, slkfd=fd)
print "Releasing '%s' on '%s'" % (RESOURCE_NAME, LOCKSPACE_NAME)
sanlock.release(LOCKSPACE_NAME, RESOURCE_NAME, SNLK_DISKS, slkfd=fd)
finally:
print "Releasing the id '%i' on '%s'" % (HOST_ID, LOCKSPACE_NAME)
sanlock.rem_lockspace(LOCKSPACE_NAME, HOST_ID, disk)
print "Removing the sanlock disk"
os.remove(disk)
if __name__ == '__main__':
main()
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