Date: Sat, 30 May 1998 03:15:38 -0400 From: tcobb <tcobb@staff.circle.net> To: "'shimon@simon-shapiro.org'" <shimon@simon-shapiro.org>, "'freebsd-scsi@freebsd.org'" <freebsd-scsi@FreeBSD.ORG> Cc: "freebsd-current@freebsd.org" <freebsd-current@FreeBSD.ORG>, Karl Pielorz <kpielorz@tdx.co.uk> Subject: RE: DPT driver fails and panics with Degraded Array Message-ID: <509A2986E5C5D111B7DD0060082F32A402FAE9@freya.circle.net>
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> -----Original Message----- > From: Simon Shapiro [mailto:shimon@simon-shapiro.org] [SNIP] > At this point, the load on > the system will > reach 140-400 (we run the tests against RAID-0 and RAID-1, the > performance differs) >From my quick review of the replies of FreeBSD DPT RAID users, all of them appear to be using their arrays in RAID-0 or RAID-1 configurations. According to Simon's test procedure for his releases (portion copied above), he too only uses the DPT RAID-0 and RAID-1 features. In my setup, I'm using both RAID-5 and RAID-1. I have yet to have a drive failure on the RAID-1 array (*knock on wood*), the problems I saw were with the RAID-5 array and rebuilds. *PERHAPS* the key point is that the driver developer hasn't tested the FreeBSD DPT driver with a RAID-5 array. Perhaps not. What is clear from my prior post (the really long one) is that in my configuration the DPT driver or some other FreeBSD software component does not correctly deal with the DPT hardware doing a background rebuild. I'm going to try to obtain another DPT card and setup another small array for further testing. -Troy Cobb Circle Net, Inc. http://www.circle.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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