[sheepdog-users] Sheepdog and slow node

[Valerio Pachera]

2014-06-25 11:45 GMT+02:00 Valerio Pachera <sirio81 at gmail.com>:

> Hi, if a node is slow to respond I see these warning messages in the log
>

Jun 24 17:02:15   WARN [gway 12981] wait_forward_request(389) poll timeout
1, disks of some nodes or network is busy. Going to poll-wait again
Jun 24 17:02:15   WARN [gway 12920] wait_forward_request(389) poll timeout
1, disks of some nodes or network is busy. Going to poll-wait again
Jun 24 17:02:15   WARN [gway 12975] wait_forward_request(389) poll timeout
1, disks of some nodes or network is busy. Going to poll-wait again
Jun 24 17:02:15   WARN [gway 12986] wait_forward_request(389) poll timeout
1, disks of some nodes or network is busy. Going to poll-wait again
Jun 24 17:02:16   WARN [gway 12957] wait_forward_request(389) poll timeout
1, disks of some nodes or network is busy. Going to poll-wait again

One of 3 nodes has a hardware raid controller.
The controller cache is temporarily disabled and the write speed drop down
to 10M/s.

What does sheepdog do in such case?
Are all guests' requests going to be slow down?
May that cause any known problem?
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