February 2013

Flashing IT firmware for LSI 9211-8i on FreeBSD

The LSI 9211-8i 6Gb/s SATA +SAS HBA, which I recently obtained, is running the stock IR (Integrated RAID) firmware. In order to use the disks in strictly passthrough mode and avoid having any metadata written to them by the card, the card needs to be changed over to IT (Initiator Target) firmware. I had heard …

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ZFS tuning

Wyze uses this tuning on his 2GB NAS box. # Dynamically adjust write limit based on previous txg commits to attempt # to maintain a 2-second commit time vfs.zfs.txg.synctime_ms=”2000″ # Set a minimum write limit of 50MB which is slightly more than the default vfs.zfs.write_limit_min=”50M” # Default vfs.zfs.write_limit_shift appears to be “3” which on a …

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Testing the benchmark scripts – 1

I’m getting very slow throughput on these drives during my first set of tests. I have no idea why… The drive in question is: $ grep ada2 /var/run/dmesg.boot ada2 at ahcich4 bus 0 scbus5 target 0 lun 0 ada2: <ST2000DM001-1CH164 CC24> ATA-8 SATA 3.x device ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada2: Command …

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New benchmarks coming

I think y’all should consider the benchmarks to date as prototypes. Tonight I wrote some scripts which will make my tasks easier and faster. It’s great not to have to manually enter all the commands. It also makes for consistencies between each run. We’ll concentrate on just two tests: bonnie++ and fio. These tests will …

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How I upgrade my WordPress installations

I have three blogs run on WordPress. Each runs on its own installation of WordPress. Why? Because all the single-install solutions I’ve seen were not very attractive. Convince me otherwise. Following the official instructions, I drew up this set of instructions which work for me. Hopefully, they work for you too. But I’m sure it’d …

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