On 5/2/2013 7:04 AM, Alessio Cecchi wrote: > "rw,noatime,attr2,delaylog,nobarrier,inode64,noquota" ... > and I'm running it on RHEL 6.4
I assume this is from /proc/mounts? All of those but for noatime, nobarrier, and inode64 are defaults. You've apparently specified these in /etc/fstab. noatime is useless as relatime is the default. Google "XFS relatime vs noatime". I assume you have a RAID controller or SAN head with [F|B]BWC and have disabled individual drive write caches of array disks, given you've disabled journal write barriers. If drive caches are in fact enabled, and/or you don't have [F|B]BWC, then journal write barriers need to be enabled. If not you're skydiving without a reserve chute. -- Stan
