[DRBD-user] Failure: (133) This would cause a sync-after dependency cycle -- (sharing)

guohuai li guohuai_li at hotmail.com
Thu Feb 19 13:43:30 CET 2009

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Dear all,

    Would you help to below questions?
    Now I try to use drbd8.3.0, when "/etc/init.d/drbd start" issued,
"Starting DRBD resources:    [ d(r0) d(r1) d(r2) s(r0) s(r1) s(r2) /dev/drbd2: Failure: (133) This would cause a sync-after dependency cycle

[r2] cmd /sbin/drbdsetup /dev/drbd2 syncer --set-defaults --create-device --al-extents=257 --after=2 --rate=10M  failed - continuing!
 
n(r0) n(r1) n(r2) ]." is showed. 
    ++++++++++++++++++++++++++++++++++++++++++++
    (Three resource (r0, r1, r2) is configured in drbd.conf), and 
    # Normally all devices are resynchronized parallel.
    # To achieve better resynchronisation performance you should resync
    # DRBD resources which have their backing storage on one physical
    # disk sequentially. The express this use the "after" keyword.
    after "r2";
    ++++++++++++++++++++++++++++++++++++++++++++
    When I comment "after "r2";", it goes well and it is like below:
+++++++
linux-10:/etc # /etc/init.d/drbd  start
Starting DRBD resources:    [ d(r0) d(r1) d(r2) s(r0) s(r1) s(r2) n(r0) n(r1) n(r2) ].
..linux-10:/etc # 
+++++++
    Would you help to explain this ?

Best regards,
Edward 

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