112 lines
3.0 KiB
HTML
112 lines
3.0 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<HTML>
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<META NAME="GENERATOR" CONTENT="SGML-Tools 1.0.9">
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<TITLE> Linux DPT Hardware RAID HOWTO : Features in the EATA DMA driver</TITLE>
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<LINK HREF="DPT-Hardware-RAID-HOWTO-7.html" REL=next>
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<LINK HREF="DPT-Hardware-RAID-HOWTO-5.html" REL=previous>
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<LINK HREF="DPT-Hardware-RAID-HOWTO.html#toc6" REL=contents>
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<BODY>
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<A HREF="DPT-Hardware-RAID-HOWTO-7.html">Next</A>
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<A HREF="DPT-Hardware-RAID-HOWTO.html#toc6">Contents</A>
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<HR>
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<H2><A NAME="s6">6. Features in the EATA DMA driver</A></H2>
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<P> This section describes some of the commands available under Linux
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to check on the RAID configuration. Again, while references to the
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eata_dma driver is made, this can be used to check up on any
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driver.
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<P> To see the configuration for your driver, type:
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<P>
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<BLOCKQUOTE><CODE>
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<PRE>
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% cat /proc/scsi/eata_dma/N
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</PRE>
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</CODE></BLOCKQUOTE>
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<P>where N is the host id for the controller. You should see something
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like this:
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<P>
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<BLOCKQUOTE><CODE>
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<PRE>
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EATA (Extended Attachment) driver version: 2.59b
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queued commands: 353969
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processed interrupts: 353969
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scsi0 : HBA PM2144UW
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Firmware revision: v07L.Y
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Hardware Configuration:
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IRQ: 11, level triggered
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DMA: BUSMASTER
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CPU: MC68020 20MHz
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Base IO : 0xef90
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Host Bus: PCI
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SCSI Bus: WIDE Speed: 10MB/sec.
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SCSI channel expansion Module: not present
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SmartRAID hardware: present.
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Type: integrated
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Max array groups: 7
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Max drives per RAID 0 array: 7
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Max drives per RAID 3/5 array: 7
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Cache Module: present.
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</PRE>
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</CODE></BLOCKQUOTE>
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<BLOCKQUOTE><CODE>
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<PRE>
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Type: 0
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Bank0: 16MB without ECC
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Bank1: 0MB without ECC
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Bank2: 0MB without ECC
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Bank3: 0MB without ECC
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Timer Mod.: present
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NVRAM : present
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SmartROM : enabled
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Alarm : on
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Host<->Disk command statistics:
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Reads: Writes:
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1k: 0 0
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2k: 0 0
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4k: 0 0
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8k: 0 0
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16k: 0 0
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32k: 0 0
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64k: 0 0
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128k: 0 0
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256k: 0 0
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512k: 0 0
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1024k: 0 0
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>1024k: 0 0
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Sum : 0 0
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</PRE>
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</CODE></BLOCKQUOTE>
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<P> To get advanced command statistics, type:
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<P>
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<BLOCKQUOTE><CODE>
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<PRE>
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% echo "eata_dma latency" > /proc/scsi/eata_dma/N
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</PRE>
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</CODE></BLOCKQUOTE>
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<P> Then you can do a:
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<P>
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<BLOCKQUOTE><CODE>
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<PRE>
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% cat /proc/scsi/eata_dma/N
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</PRE>
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</CODE></BLOCKQUOTE>
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<P>to get more detailed statistics.
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<P> To turn off advanced command statistics, type:
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<P>
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<BLOCKQUOTE><CODE>
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<PRE>
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% echo "eata_dma nolatency" > /proc/scsi/eata_dma/N
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</PRE>
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</CODE></BLOCKQUOTE>
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<HR>
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<A HREF="DPT-Hardware-RAID-HOWTO-7.html">Next</A>
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<A HREF="DPT-Hardware-RAID-HOWTO-5.html">Previous</A>
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<A HREF="DPT-Hardware-RAID-HOWTO.html#toc6">Contents</A>
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