Can't recycle the ERRORLOG - error 17049 When we attempted to run sp_cycle_errorlog we get the following:


  Msg 17049, Level 16, State 1, Procedure sp_cycle_errorlog, Line 9
  Unable to cycle error log file from
  'G:\SQL_DATA1\MSSQL10_50.ABC\MSSQL\Log\ERRORLOG.15' to
  'G:\SQL_DATA1\MSSQL10_50.ABC\MSSQL\Log\ERRORLOG.16' due to OS error
  '1392(failed to retrieve text for this error. Reason: 15105)'. A
  process outside of SQL Server may be preventing SQL Server from
  reading the files. As a result, errorlog entries may be lost and it
  may not be possible to view some SQL Server errorlogs. Make sure no
  other processes have locked the file with write-only access."
  DBCC execution completed. If DBCC printed error messages, contact your system administrator.


So far we have tried:


Failing over the SQL cluster resource to second node, rebooting server, failing back and rebooting second node
Using Process Explorer tool - this identified the only process using the ERRORLOG file to be sqlservr.exe


SQL version details:


  Microsoft SQL Server 2008 R2 (SP3) - 10.50.6000.34 (X64)  Aug 19 2014
  12:21:34  Copyright (c) Microsoft Corporation Enterprise Edition
  (64-bit) on Windows NT 6.1  (Build 7601: Service Pack 1)


There are two SQL instances on this two node SQL cluster, on the other instance the log cycles over with no issue.

I have seen a couple of posts on this subject but both appear to have been resolved by killing the non-sqlserver process. I'm presuming that the sqlsrvr.exe process is expected to be locking the file?

Any help appreciated.
From System Error Codes (1300-1699): OS error 1392 indicates file corruption.


  ERROR_FILE_CORRUPT
  1392 (0x570)
  The file or directory is corrupted and unreadable.


So it looks like you have corruption on your G: drive.

I would start with a chkdsk of that drive and all other drives.

Since corruption usually doesn't fix itself and can have the tendency to worsen, personally I would fail over to the other node ASAP before other files (I don't know what else lives on the drive) corrupt and the situation gets trickier and trickier.