SmartDisk generates many storageservice trace and buffer files in the diskmanager/trace directory.
On investigation the following entries are detected in the trace;
***** 29939 1328012130.811342 STOR-SVC Storage Service failed
***** 29942 1328012131.736841 DOMLAY Lock refused for URI '/NVBU/server/APE/segments/12120b0ad9ce274f074600009408000063000000'
***** 29942 1328012131.737226 DOMLAY Task has failed - in error/unexpected state 'Lock Error'
***** 29942 1328012131.737331 APPLAY Failed to service registered layers
This is caused by a timing issue between NVBU and NVSD. Previously NVBU has asked NVSD to retire the backup stream. Because of the timing issue the stream was retired from NVSD, but NVBU timed out before receiving the confirmation. NVBU repeats the request later and this error occurs because the backup stream does not exist. NVBU will keep retrying this retirement and the situation will escallate.
The issue has been addressed in a limited availability of NVSD 1.5.1 called build 1 and will be included in future releases.
The impact of the problem (for SmartDisk 1.5.1) can be reduced by setting the buffer and trace levels for the storageservice process to NONE. This is accomplished by editing the file <smartdisk>/diskmanager/etc/trace.cfg and editing the following entry;
[TraceToFile:storageservice]
Buffer = ALL
Level = ERROR
Change this to Buffer = NONE and Level = NONE
