Ooops, this was actually meant for lustre-discuss, not for lustre-devel. ---------- Forwarded Message ----------
Subject: [Lustre-devel] max_sectors_kb change doesn't help Date: Wednesday 26 September 2007 17:41 From: Erich Focht <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Hi, in /proc/fs/lustre/obdfilter/*/brw_stats I found that the disk I/O is done in 512K pieces. Following the Lustre manual I changed /sys/block/DEVICE/queue/max_sectors_kb to 1024 but the I/O sizes in Lustre didn't change. Is there any place in Lustre where I can enforce 1MB I/Os? What else can I do? My RAID is connected through an mpt fusion driver and I cannot find any place where the I/O size is limited to 512KB. In fact, without Lustre I am able to write with larger I/Os, so I suspect it's not the driver's fault... Regards, Erich _______________________________________________ Lustre-discuss mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
