Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Mail Systems
Eclipse Documentation

How To Guides
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Problem Solutions
Privacy Policy




Samba HowTo Guide
Prev Home Next

Locking Improvements

Some people have been experiencing problems with F_SETLKW64/fcntl when running Samba on Solaris. The built-in file-locking mechanism was not scalable. Performance would degrade to the point where processes would get into loops of trying to lock a file. It would try a lock, then fail, then try again. The lock attempt was failing before the grant was occurring. The visible manifestation of this was a handful of processes stealing all of the CPU, and when they were trussed, they would be stuck in F_SETLKW64 loops.

Please check with Sun support for current patches needed to fix this bug. The patch revision for 2.6 is 105181-34, for 8 is 108528-19, and for 9 is 112233-04. After the installation of these patches, it is recommended to reconfigure and rebuild Samba.

Thanks to Joe Meslovich for reporting this.

Samba HowTo Guide
Prev Home Next

  Published under the terms fo the GNU General Public License Design by Interspire