search for: lpfc_sg_seg_cn

...rite) block size more than 4KiB is split in to number of 4KiB blocks on Centos 7.3 ( where I don't see similar issue on 7.2). I have a setup that involves TWO CentOS 7.3 servers. I tried to run 4MB IO on FC LUN(s) on these servers discovered through Emulex LPe 16000 HBAs. Changed ?options lpfc lpfc_sg_seg_cn =>1024? and ?max_secors_kb =>4MB? params towards attaining supersize IO ( 4MB block size) , however there are no improvements in getting more than 4K block size IO. There was no impact from these changes. Looking for a help to tune the system to attain supersize IO operation (4MB writes) R...

...rite) block size more than 4KiB is split in to number of 4KiB blocks on Centos 7.3 ( where I don't see similar issue on 7.2). I have a setup that involves TWO CentOS 7.3 servers. I tried to run 4MB IO on FC LUN(s) on these servers discovered through Emulex LPe 16000 HBAs. Changed ?options lpfc lpfc_sg_seg_cn =>1024? and ?max_secors_kb =>4MB? params towards attaining supersize IO ( 4MB block size) , however there are no improvements in getting more than 4K block size IO. There was no impact from these changes. Looking for a help to tune the system to attain supersize IO operation (4MB writes) R...