Date: Thu, 12 Feb 2009 19:33:10 +0100 From: Kevin Smith <repcsike@gmail.com> To: Richard Tector <richardtector@thekeelecentre.com> Cc: freebsd-stable@freebsd.org Subject: Re: Problem with SATA/SAS 5iR Message-ID: <c4b701070902121033u467e1212g2d43605774ea3249@mail.gmail.com> In-Reply-To: <4994644D.8070102@thekeelecentre.com> References: <c4b701070902120909m1d6e8d0dka8032a612f9139d0@mail.gmail.com> <4994644D.8070102@thekeelecentre.com>
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2009/2/12 Richard Tector <richardtector@thekeelecentre.com> > Kevin Smith wrote: > >> Hi, >> >> I have a problem with a Dell Poweredge SC440 computer. >> It's equipped with a "Dell SATA/SAS 5iR" controller, it's from LSI >> actually >> (maybe megaraid). >> >> I'm using FreeBSD 7.1 Release >> >> I have 2x 500 GB SATA in a synchronised(status optimal) RAID-1 logical >> volume. >> >> The machine is brand new, first problem arised early after the installer >> started to install the files, the install was very slow, (I know it is >> because write cache is not enabled, that can be done with a management >> program, and I will enable it later) and sysinstall could not install the >> ports collection, the error it gave was >> "write error on transfer to cpio process, try of 1024 bytes" after OK, >> write error popped up. >> >> I found this error too, but I found no clue what could have happened. >> >> Installing the system without the ports collection (installed it later >> with >> cvsup)in another run gave no error at all, and in dmesg is see the logical >> volume: >> >> mpt0:vol0(mpt0:0:0): Settings ( Hot-Plug-Spares High-Priority-ReSync ) >> mpt0:vol0(mpt0:0:0): Using Spare Pool: 0 >> mpt0:vol0(mpt0:0:0): 2 Members: >> (mpt0:1:32:0): Primary Online >> (mpt0:1:1:0): Secondary Online >> mpt0:vol0(mpt0:0:0): RAID-1 - Optimal >> mpt0:vol0(mpt0:0:0): Status ( Enabled ) >> (mpt0:vol0:1): Physical (mpt0:0:1:0), Pass-thru (mpt0:1:0:0) >> (mpt0:vol0:1): Online >> (mpt0:vol0:0): Physical (mpt0:0:32:0), Pass-thru (mpt0:1:1:0) >> (mpt0:vol0:0): Online >> da0 at mpt0 bus 0 target 0 lun 0 >> da0: <Dell VIRTUAL DISK 1028> Fixed Direct Access SCSI-5 device >> da0: 300.000MB/s transfers >> da0: 476837MB (976562176 512 byte sectors: 255H 63S/T 60788C) >> >> It looks OK, but then I found this after typing "df -h", and it gives me >> the >> creeps: >> >> Filesystem Size Used Avail Capacity Mounted on >> /dev/da0s1a 496M 138M 318M 30% / >> devfs 1.0K 1.0K 0B 100% /dev >> /dev/da0s1e 3.9G 14K 3.6G 0% /tmp >> /dev/da0s1f 440G 537M 404G 0% /usr >> /dev/da0s1d 2.9G 1.3M 2.7G 0% /var >> >> I'm reading the freebsd-current list, and I found another buffer related >> problem there, but they say nothing about these. >> >> If you have any explanation/solution for these problems pls share them! >> >> >> > What's wrong with the dmesg? The used/available inconsistencies are due to > space being reserved. > > Regarding disk performance, you need to put hw.mpt.enable_sata_wc=1 in > /boot/loader.conf to reenable the write cache (it's disabled by default for > consistency reasons when using SATA disks leading to poor write > performance). > > Regards, > > Richard > Thanks for your advice, this was unusual for me, because even on a 4iR I couldnt see this space reservation. What about sysinstalls write error when extracting the ports collection? Regards, B.
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