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### Author: Bert de Bruijn <bert+dstat$debruijn,be>
### VMware ESX kernel vmhba stats
### Displays kernel vmhba statistics on VMware ESX servers
# NOTE TO USERS: command-line plugin configuration is not yet possible, so I've
# "borrowed" the -D argument.
# EXAMPLES:
# # dstat --vmkhba -D vmhba1,vmhba2,total
# # dstat --vmkhba -D vmhba0
# You can even combine the Linux and VMkernel diskstats (but the "total" argument
# will be used by both).
# # dstat --vmkhba -d -D sda,vmhba1
class dstat_plugin(dstat):
def __init__(self):
self.name = 'vmkhba'
self.nick = ('read', 'writ')
self.cols = 2
def discover(self, *list):
# discover will list all vmhba's found.
# we might want to filter out the unused vmhba's (read stats, compare with ['0', ] * 13)
ret = []
try:
list = os.listdir('/proc/vmware/scsi/')
except:
raise Exception, 'Needs VMware ESX'
for name in list:
for line in dopen('/proc/vmware/scsi/%s/stats' % name).readlines():
l = line.split()
if len(l) < 13: continue
if l[0] == 'cmds': continue
if l == ['0', ] * 13: continue
ret.append(name)
return ret
def vars(self):
# vars will take the argument list - when implemented - , use total, or will use discover + total
ret = []
if op.disklist:
list = op.disklist
#elif not op.full:
# list = ('total', )
else:
list = self.discover
list.sort()
for name in list:
if name in self.discover + ['total']:
ret.append(name)
return ret
def check(self):
try:
os.listdir('/proc/vmware')
except:
raise Exception, 'Needs VMware ESX'
info(1, 'The vmkhba module is an EXPERIMENTAL module.')
def extract(self):
self.set2['total'] = (0, 0)
for name in self.vars:
self.set2[name] = (0, 0)
for name in os.listdir('/proc/vmware/scsi/'):
for line in dopen('/proc/vmware/scsi/%s/stats' % name).readlines():
l = line.split()
if len(l) < 13: continue
if l[0] == 'cmds': continue
if l[2] == '0' and l[4] == '0': continue
if l == ['0', ] * 13: continue
self.set2['total'] = ( self.set2['total'][0] + long(l[2]), self.set2['total'][1] + long(l[4]) )
if name in self.vars and name != 'total':
self.set2[name] = ( long(l[2]), long(l[4]) )
for name in self.set2.keys():
self.val[name] = (
(self.set2[name][0] - self.set1[name][0]) * 1024.0 / elapsed,
(self.set2[name][1] - self.set1[name][1]) * 1024.0 / elapsed,
)
if step == op.delay:
self.set1.update(self.set2)