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Last change
on this file since 2495 was
2495,
checked in by adehnert, 15 years ago
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Balance LVM requests (LP: #307361)
- Add "monocast" method to send remctl requests to exactly one
randomly-selected host.
- Send LVM requests to randomly-selected host for redundancy and
load-balancing (LP: #307361).
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-
Property svn:executable set to
*
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File size:
603 bytes
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| Line | |
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| 1 | #!/usr/bin/python |
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| 2 | |
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| 3 | """ |
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| 4 | Run an LVM command on one host, with failover for downed hosts. |
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| 5 | """ |
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| 6 | |
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| 7 | from invirt.remote import monocast |
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| 8 | import sys |
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| 9 | import os |
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| 10 | |
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| 11 | def main(argv): |
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| 12 | # Query each of the hosts. |
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| 13 | if(os.path.exists("/etc/invirt/nolvm")): |
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| 14 | sys.stderr.write("LVM operations are temporarily disabled for maintenance, sorry.\n") |
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| 15 | return 2 |
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| 16 | result = monocast(argv[1:]) |
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| 17 | #print "Hostname: %s; down=%s" % (result[0], result[1]) |
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| 18 | sys.stdout.write(result[3]) # stdout |
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| 19 | sys.stderr.write(result[4]) # stderr |
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| 20 | |
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| 21 | if __name__ == '__main__': |
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| 22 | sys.exit(main(sys.argv)) |
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| 23 | |
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| 24 | # vim:et:sw=4:ts=4 |
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