[Linux-cachefs] FS-Cache for root only??

[Hohl, Adolf]

Dear FS-Cache users,
 
i discovered the following strange behaviour. When another user than root (e.g. nobody, benadm) accesses files (e.g. via a simple copy command to /dev/null) on a FS-cached NFS mount the kernel reports:
 
Feb 19 09:14:56 dqkal136 syslog-ng[1960]: STATS: dropped 0
Feb 19 09:31:03 dqkal136 su: (to nobody) root on /dev/pts/0
Feb 19 09:43:46 dqkal136 su: (to nobody) root on /dev/pts/0
Feb 19 09:44:08 dqkal136 kernel: FS-Cache: error from cache: -13
 
The command procedes without caching anything. As root the cache grows as expected.
 
Has anybody made the same experience, knows the reason, or even better knows how to get rid of it?
 
Thanks in advance

 
 
Adolf Hohl
Researcher
SAP Research CEC Karlsruhe
Vincenz Prießnitz Straße 1
76131 Karlsruhe
T +49 (0) 721 690248
F +49 (0) 6227 7848102
E adolf.hohl {} sap.com <mailto:adolf.hohl at sap.com> 
 
 
 
Sitz der Gesellschaft/Registered Office: Walldorf, Germany
Vorstand/SAP Executive Board: Henning Kagermann (Sprecher/CEO), Shai Agassi, Léo Apotheker, Werner Brandt, Claus Heinrich, Gerhard Oswald, Peter Zencke
Vorsitzender des Aufsichtsrats/Chairperson of the SAP Supervisory Board: Hasso Plattner
Registergericht/Commercial Register Mannheim No HRB 350269

Diese E-Mail kann Betriebs- oder Geschäftsgeheimnisse oder sonstige vertrauliche Informationen enthalten. Sollten Sie diese E-Mail irrtümlich erhalten haben, ist Ihnen eine Kenntnisnahme des Inhalts, eine Vervielfältigung oder Weitergabe der E-Mail ausdrücklich untersagt.
Bitte benachrichtigen Sie uns und vernichten Sie die empfangene E-Mail. Vielen Dank.

This e-mail may contain trade secrets or privileged, undisclosed, or otherwise confidential information. If you have received this e-mail in error, you are hereby notified that any review, copying, or distribution of it is strictly prohibited. Please inform us immediately and destroy the original transmittal. Thank you for your cooperation.