[DRBD-user] Zombie, Zombie?

Andreas Semt as at computer-leipzig.de
Mon Apr 26 15:46:50 CEST 2004

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Lars Ellenberg wrote:

> / 2004-04-26 13:37:04 +0200
> \ Andreas Semt:
> 
>>Another question: I have a directory on a partition on top of a drbd 
>>device. The load average was very high for that machine (around 6).
>>When i tried to do a "ls -l" in that directory, nothing happens, the "ls 
>>-l" command hangs. However there was no drbd traffic at all on the drbd 
>>device for the specific partition. Could it be that some drbd process 
>>was responsible for the "hang"? How can I detect which process access 
>>the drbd device at a particular time?
> 
> 
> in normal operation, with drbd 0.6,  you should have
> drbd_receiver, drbd_asender on both nodes.
> when sync is in progress, you have additionally the drbd_syncer.
> 
> in 0.7, you have regardless of sync, on both nodes:
> drbd_receiver, drbd_asender, drbd_worker.
> 

Oh my ... drbd_receiver is not on one of the nodes!

Here the output (i have four drbd devices):

node1:~# ps aux | grep drbd
root       255  0.8  0.0     0    0 ?        SW   10:01   2:55 [drbdd_0]
root       301  0.8  0.0     0    0 ?        SW   10:01   2:44 [drbdd_1]
root       347  0.0  0.0     0    0 ?        SW   10:01   0:02 [drbdd_2]
root       393  1.3  0.0     0    0 ?        SW   10:01   4:19 [drbdd_3]
root      4230  0.0  0.0     0    0 ?        SW   10:17   0:00 
[drbd_asender_0]
root      6514  0.0  0.0     0    0 ?        SW   10:32   0:00 
[drbd_asender_1]
root      8732  0.0  0.0     0    0 ?        SW   10:48   0:00 
[drbd_asender_2]
root     11290  0.0  0.0     0    0 ?        SW   11:04   0:00 
[drbd_asender_3]


node2:~# ps aux | grep drbd
root       247  2.4  0.0     0    0 ?        SW   10:01   8:15 [drbdd_0]
root       292  2.4  0.0     0    0 ?        SW   10:01   8:17 [drbdd_1]
root       337  0.0  0.0     0    0 ?        SW   10:01   0:10 [drbdd_2]
root       382  5.2  0.0     0    0 ?        SW   10:01  17:35 [drbdd_3]
root      3915  0.2  0.0     0    0 ?        SW   10:17   0:43 
[drbd_asender_0]
root      5786  0.2  0.0     0    0 ?        SW   10:32   0:44 
[drbd_asender_1]
root      7666  0.0  0.0     0    0 ?        SW   10:48   0:01 
[drbd_asender_2]
root      9563  0.5  0.0     0    0 ?        SW   11:04   1:32 
[drbd_asender_3]


What does that mean?

-- 
Best regards,
Andreas Semt



More information about the drbd-user mailing list