[mythtv-users] Linux software raid question

Yan-Fa Li yanfali at gmail.com
Thu Jun 5 00:21:13 UTC 2008

On Tue, Jun 3, 2008 at 11:00 AM, Yan-Fa Li <yanfali at gmail.com> wrote:
> I'm about to try something like that out in the next couple of weeks.
> I have a sil 3124 based controller on it's way to see if it's
> compatible with my file server PCI-X implementation and then I've been
> looking at these:
> http://addonics.com/products/host_controller/extpm.asp
> According to the research I've done at http://linux-ata.org/ support
> for both the 3124 and the 3726 PMP is good as of kernel 2.6.25, which
> is bleeding edge and beyond most mainstream distributions, but I'm on
> gentoo so it's not really an issue.  Using this sort of solution it's
> possible to get to 20 ports of eSATA which should scale for quite some
> time; 18TB RAID6 array anyone?  Then your problem becomes finding a
> filesystem that will scale to that.  Though with mythtv that's no
> longer an issue thanks to storage groups assuming you can stand losing
> some TV.

Well the sil 3124 arrived today and seems to work beautifully on the
motherboard.  Came up as 4 ports of SCSI in 66/64 mode.

01:02.0 RAID bus controller: Silicon Image, Inc. SiI 3124 PCI-X Serial
ATA Controller (rev 02)
        Subsystem: Silicon Image, Inc. Device 7124
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop-
ParErr- Stepping+ SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium
>TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 64, Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 22
        Region 0: Memory at f7800000 (64-bit, non-prefetchable) [size=128]
        Region 2: Memory at f7000000 (64-bit, non-prefetchable) [size=32K]
        Region 4: I/O ports at 6800 [size=16]
        Capabilities: [64] Power Management version 2
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
                Status: D0 PME-Enable- DSel=0 DScale=1 PME-
        Capabilities: [40] PCI-X non-bridge device
                Command: DPERE- ERO+ RBC=512 OST=12
                Status: Dev=ff:1f.0 64bit+ 133MHz+ SCD- USC- DC=simple
DMMRBC=2048 DMOST=12 DMCRS=128 RSCEM- 266MHz- 533MHz-
        Capabilities: [54] Message Signalled Interrupts: Mask- 64bit+
Queue=0/0 Enable-
                Address: 0000000000000000  Data: 0000
        Kernel driver in use: sata_sil24

Now to get a port multiplier...

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