| OpenVZ + DRBD high iowait and failure on new kernels [message #40000] |
Mon, 05 July 2010 19:43 |
masood
Messages: 2
Registered: February 2008
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Junior Member |
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We are using openvz on top of drbd in a failover system on CentOS 5. This was working great for over a year. The last working kernel without any issue was 2.6.18-92.1.1.el5.028stab057.2
After this something has changed that is causing high iowait. The fopen operation is taking so long that mysql queries hang for over a minute to open a table. named starts failing as well. This is happening on a variety of hardware which was working great up to 2.6.18-92.1.1.el5.028stab057.2
We have also tried upgrading drbd to 8.2 and 8.3. Same result on all combination. Tried latest kernel 2.6.18-194.3.1.el5.028stab069. Same problem. The only common variable is openvz kernels after 2.6.18-92.1.1.el5.028stab057.2
Any idea what has changed? Any pointers? Is anyone available to take a look? Successful resolution will be compensated. Thank you.
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