Hi,
We have experienced a lot of disk errors on a few of our Azure virtual machines. This weekend it happened again. In the event log we find that the first event is written by ESENT:
"svchost (1300) A request to write to the file "C:\Windows\system32\LogFiles\Sum\Svc.log" at offset 1306624 (0x000000000013f000) for 4096 (0x00001000) bytes succeeded, but took an abnormally long time (165 seconds) to be serviced by the OS. In addition, 0 other I/O requests to this file have also taken an abnormally long time to be serviced since the last message regarding this problem was posted 466 seconds ago. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem."
Then we get a lot of disk warnings stating that "The IO operation at logical block address..." was retried. This goes on until I logged on this morning to fix a stopped SQL Server (the server runs SQL Express). the event log shows the SQL server stopped quite soon after the error occured, SQLServerLogMgr::LogWriter complaining about disk IO errors.
Anyone else that have experienced the same thing?
The first half hour of event log messages:
Error12.07.2014 06:28:56MSSQLSERVER9001Server
Error12.07.2014 06:28:56MSSQLSERVER9001Server
Error12.07.2014 06:28:56MSSQLSERVER17053Server
Warning12.07.2014 06:28:54Ntfs (Microsoft-Windows-Ntfs)140None
Warning12.07.2014 06:28:42disk153None
Warning12.07.2014 06:26:57disk153None
Warning12.07.2014 06:26:43disk153None
Warning12.07.2014 06:25:22disk153None
Warning12.07.2014 06:25:17disk153None
Warning12.07.2014 06:23:01disk153None
Warning12.07.2014 06:22:02disk153None
Warning12.07.2014 06:21:53disk153None
Warning12.07.2014 06:21:32disk153None
Warning12.07.2014 06:20:48disk153None
Warning12.07.2014 06:20:36disk153None
Warning12.07.2014 06:20:35disk153None
Warning12.07.2014 06:20:33disk153None
Warning12.07.2014 06:11:53disk153None
Warning12.07.2014 06:11:31disk153None
Warning12.07.2014 06:11:22disk153None
Warning12.07.2014 06:03:53disk153None
Warning12.07.2014 06:02:57disk153None
Warning12.07.2014 06:02:56disk153None
Warning12.07.2014 06:02:54disk153None
Warning12.07.2014 06:02:51disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 06:02:46disk153None
Warning12.07.2014 05:58:12ESENT510Performance
Warning12.07.2014 05:58:07disk153None
Warning12.07.2014 05:58:04disk153None
Warning12.07.2014 05:58:04disk153None
Warning12.07.2014 05:58:04disk153None
Warning12.07.2014 05:58:03disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:58:00disk153None
Warning12.07.2014 05:52:59ESENT510Performance
Warning12.07.2014 05:52:58disk153None
Warning12.07.2014 05:52:30disk153None
Warning12.07.2014 05:51:58disk153None
Warning12.07.2014 05:51:56disk153None
Warning12.07.2014 05:51:52disk153None
Warning12.07.2014 05:51:40disk153None
Warning12.07.2014 05:51:20disk153None
Warning12.07.2014 05:51:16disk153None
Warning12.07.2014 05:50:32ESENT533General
Warning12.07.2014 05:48:00ESENT508Performance