I think this fixed my issue. Just add the following line to your /etc/fstab file: shm /dev/shm tmpfs nodev,nosuid,noexec 0 0 After that use (as root): # mount shm -----Original Message----- From: Holmes, Michael A (Mike) [mailto:Mike.Holmes@xxxxxxx] Sent: Tuesday, September 18, 2012 8:29 AM To: squid-users@xxxxxxxxxxxxxxx Subject: RE: FATAL: Ipc::Mem::Segment::create failed to shm_open(/squid-squid-page-pool.shm): (13) Permission denied The OS is Linux 2.6.35 -----Original Message----- From: Holmes, Michael A (Mike) Sent: Monday, September 17, 2012 3:45 PM To: squid-users@xxxxxxxxxxxxxxx Subject: FATAL: Ipc::Mem::Segment::create failed to shm_open(/squid-squid-page-pool.shm): (13) Permission denied I just added "workers 4" to my working configuration and I get an shm_open error. I assume it is trying to write to the root directory "/squid-squid-page-pool.shm" as the user squid which will fail. How do I redirect this? Thanks Mike Squid Cache (Version 3.2.1): Terminated abnormally. CPU Usage: 0.060 seconds = 0.040 user + 0.020 sys Maximum Resident Size: 18560 KB Page faults with physical i/o: 0 2012/09/17 15:34:33 kid1| Creating Swap Directories 2012/09/17 15:38:02| storeDirWriteCleanLogs: Starting... 2012/09/17 15:38:02| Finished. Wrote 0 entries. 2012/09/17 15:38:02| Took 0.00 seconds ( 0.00 entries/sec). FATAL: Ipc::Mem::Segment::create failed to shm_open(/squid-squid-page-pool.shm): (13) Permission denied
