def map_by_scsibus(sid,npaths=0):
# Synchronously creates/refreshs the MP map for a single SCSIid.
# Gathers the device vector from /dev/disk/by-scsibus - we expect
# there to be 'npaths' paths
util.SMlog("map_by_scsibus: sid=%s" % sid)
devices = []
# Wait for up to 60 seconds for n devices to appear
for attempt in range(0,60):
devices = scsiutil._genReverseSCSIidmap(sid)
# If we've got the right number of paths, or we don't know
# how many devices there ought to be, tell multipathd about
# the paths, and return.
if(len(devices)>=npaths or npaths==0):
# Enable this device's sid: it could be blacklisted
# We expect devices to be blacklisted according to their
# wwid only. We go through the list of paths until we have
# a definite answer about the device's blacklist status.
# If the path we are checking is down, we cannot tell.
for dev in devices:
try:
if wwid_conf.is_blacklisted(dev):
try:
wwid_conf.edit_wwid(sid)
except:
util.SMlog("WARNING: exception raised while "
"attempting to modify multipath.conf")
try:
mpath_cli.reconfigure()
except:
util.SMlog("WARNING: exception raised while "
"attempting to reconfigure")
time.sleep(5)
break
except wwid_conf.WWIDException as e:
util.SMlog(e.errstr)
else:
util.SMlog("Device 'SCSI_id: {}' is inaccessible; "
"All paths are down.".format(sid))
__map_explicit(devices)
return
time.sleep(1)
__map_explicit(devices)
def map_by_scsibus(sid, npaths=0):
# Synchronously creates/refreshs the MP map for a single SCSIid.
# Gathers the device vector from /dev/disk/by-scsibus - we expect
# there to be 'npaths' paths
util.SMlog("map_by_scsibus: sid=%s" % sid)
devices = []
# Wait for up to 60 seconds for n devices to appear
for attempt in range(0, 60):
devices = scsiutil._genReverseSCSIidmap(sid)
# If we've got the right number of paths, or we don't know
# how many devices there ought to be, tell multipathd about
# the paths, and return.
if (len(devices) >= npaths or npaths == 0):
# Enable this device's sid: it could be blacklisted
# We expect devices to be blacklisted according to their
# wwid only. We go through the list of paths until we have
# a definite answer about the device's blacklist status.
# If the path we are checking is down, we cannot tell.
for dev in devices:
try:
if wwid_conf.is_blacklisted(dev):
try:
wwid_conf.edit_wwid(sid)
except:
util.SMlog("WARNING: exception raised while "
"attempting to modify multipath.conf")
try:
mpath_cli.reconfigure()
except:
util.SMlog("WARNING: exception raised while "
"attempting to reconfigure")
time.sleep(5)
break
except wwid_conf.WWIDException as e:
util.SMlog(e.errstr)
else:
util.SMlog("Device 'SCSI_id: {}' is inaccessible; "
"All paths are down.".format(sid))
__map_explicit(devices)
return
time.sleep(1)
__map_explicit(devices)
def map_by_scsibus(sid,npaths=0):
# Synchronously creates/refreshs the MP map for a single SCSIid.
# Gathers the device vector from /dev/disk/by-scsibus - we expect
# there to be 'npaths' paths
util.SMlog("map_by_scsibus: sid=%s" % sid)
devices = []
# Wait for up to 60 seconds for n devices to appear
for attempt in range(0,60):
devices = scsiutil._genReverseSCSIidmap(sid)
# If we've got the right number of paths, or we don't know
# how many devices there ought to be, tell multipathd about
# the paths, and return.
if(len(devices)>=npaths or npaths==0):
# Enable this device's sid: it could be blacklisted
# We expect devices to be blacklisted according to their
# wwid only. Checking the first one is sufficient
if wwid_conf.is_blacklisted(devices[0]):
try:
wwid_conf.edit_wwid(sid)
except:
util.SMlog("WARNING: exception raised while attempting to"
" modify multipath.conf")
try:
mpath_cli.reconfigure()
except:
util.SMlog("WARNING: exception raised while attempting to"
" reconfigure")
time.sleep(5)
__map_explicit(devices)
return
time.sleep(1)
__map_explicit(devices)
def map_by_scsibus(sid, npaths=0):
# Synchronously creates/refreshs the MP map for a single SCSIid.
# Gathers the device vector from /dev/disk/by-scsibus - we expect
# there to be 'npaths' paths
util.SMlog("map_by_scsibus: sid=%s" % sid)
devices = []
# Wait for up to 60 seconds for n devices to appear
for attempt in range(0, 60):
devices = scsiutil._genReverseSCSIidmap(sid)
# If we've got the right number of paths, or we don't know
# how many devices there ought to be, tell multipathd about
# the paths, and return.
if (len(devices) >= npaths or npaths == 0):
# Enable this device's sid: it could be blacklisted
# We expect devices to be blacklisted according to their
# wwid only. Checking the first one is sufficient
if wwid_conf.is_blacklisted(devices[0]):
try:
wwid_conf.edit_wwid(sid)
except:
util.SMlog("WARNING: exception raised while attempting to"
" modify multipath.conf")
try:
mpath_cli.reconfigure()
except:
util.SMlog("WARNING: exception raised while attempting to"
" reconfigure")
time.sleep(5)
__map_explicit(devices)
return
time.sleep(1)
__map_explicit(devices)
