def attach(self, dbg, uri, domain):
# FIXME: add lvm activation code
u = urlparse.urlparse(uri)
(vgname, lvname, scsid) = self._getVgLvScsid(dbg, u.path)
log.debug("%s Vg=%s Lv=%s Scsid%s" % (dbg, vgname, lvname, scsid))
vg = self._vgOpen(dbg, vgname, "r", scsid)
lv = vg.lvFromName(lvname)
lv.activate()
vg.close()
cmd = ["/usr/bin/vhd-util", "query", "-n", u.path, "-P"]
output = call(dbg, cmd)
log.debug("%s output=%s" % (dbg, output))
output = output[:-1]
if output[-6:] == "parent":
log.debug("No Parent")
else:
output = output.replace("--", "-")
log.debug("%s" % output[-36:])
activation_file = "/var/run/nonpersistent/" + vgname + "/" + output[-36:]
if (not os.path.exists(activation_file)):
vg = self._vgOpen(dbg, vgname, "r", scsid)
lv = vg.lvFromName(output[-36:])
log.debug("Activating %s" % lv.getName())
lv.activate()
vg.close()
open(activation_file, 'a').close()
tap = tapdisk.create(dbg)
tapdisk.save_tapdisk_metadata(dbg, u.path, tap)
return {
'domain_uuid': '0',
'implementation': ['Tapdisk3', tap.block_device()],
}
def attach(self, dbg, uri, domain):
u = urlparse.urlparse(uri)
tap = tapdisk.create(dbg)
tapdisk.save_tapdisk_metadata(dbg, u.path, tap)
return {
'domain_uuid': '0',
'implementation': ['Tapdisk3', tap.block_device()],
}
def activate(self, dbg, uri, domain):
u = urlparse.urlparse(uri)
# XXX need some datapath-specific errors below
if not(os.path.exists(u.path)):
raise xapi.storage.api.volume.Volume_does_not_exist(u.path)
if u.scheme[:3] == "vhd":
img = image.Vhd(u.path)
elif u.scheme[:3] == "raw":
img = image.Raw(u.path)
else:
raise
# See whether we should open it O_DIRECT
o_direct = self._get_uri_param(dbg, uri, 'o_direct', "true")
o_direct = o_direct in ['true', 't', 'on', '1', 'yes']
log.debug("o_direct = %s" % (o_direct))
tap = tapdisk.load_tapdisk_metadata(dbg, u.path)
tap.open(dbg, img, o_direct)
tapdisk.save_tapdisk_metadata(dbg, u.path, tap)
