Hi Folks, I'm new to this mailing list, wanting to learn more about Linux's RAID support after having setup a RAID-5 array on our news server. This is the MD version i have in my 2.0.36 Linux kernel: md driver 0.36.3 MAX_MD_DEV=4, MAX_REAL=8 raid5 personality registered Using raidtools 0.41.. Everything seems to be working fine, however, i noticed this when i run dmesg: raid5: lock contention, rw == 1, sh->cmd == 2 raid5: lock contention, rw == 1, sh->cmd == 2 raid5: lock contention, rw == 1, sh->cmd == 2 raid5: lock contention, rw == 1, sh->cmd == 2 The machine is a news server with 4 9gig SCSI drives RAID-5'ed together. I understand this has to do with balancing read/writes across the disks to avoid this contention. Reading the FAQ's they say that for Intel hardware, 4k chunk size would be optimal to balance the load across the disks, is this correct? I couldnt find alot more relevant information on the web and i am posting here, hopefully someone could shed some light onto this issue. Thanks in advance, Chris. ---------------------------------- Chris Keladis TPG Internet System Administrator E-Mail: Chris Keladis <[EMAIL PROTECTED]> Local Date: 31-Jan-99 Local Time: 13:24:16 ----------------------------------
