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# Author: Brock Palen <brockp@mlds-networks.com>, Kilian Vavalotti <kilian@stanford.edu> class dstat_plugin(dstat): def __init__(self): self.nick = ('read', 'write') def check(self): if not os.path.exists('/proc/fs/lustre/llite'): raise Exception, 'Lustre filesystem not found' info(1, 'Module %s is still experimental.' % self.filename) def name(self): return [mount for mount in os.listdir('/proc/fs/lustre/llite')] def vars(self): return [mount for mount in os.listdir('/proc/fs/lustre/llite')] def extract(self): for name in self.vars: for l in open(os.path.join('/proc/fs/lustre/llite', name, 'stats')).splitlines(): if len(l) < 6: continue if l[0] == 'read_bytes': read = long(l[6]) elif l[0] == 'write_bytes': write = long(l[6]) self.set2[name] = (read, write) self.val[name] = ( (self.set2[name][0] - self.set1[name][0]) * 1.0 / elapsed, (self.set2[name][1] - self.set1[name][1]) * 1.0 / elapsed ) if step == op.delay: self.set1.update(self.set2) # vim:ts=4:sw=4