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 _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
