Messages in this thread | | | Date | Tue, 3 Aug 2004 13:47:06 -0500 (CDT) | Subject | Re: dma problems with Serverworks CSB5 chipset | From | "Rich Wohlstadter" <> |
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> On Maw, 2004-08-03 at 19:08, Marcelo Tosatti wrote: >> ServerWorks OSB4/5 chipsets are known to not work reliably with the >> Linux >> IDE code. AFAIK its a hardware problem which we dont correctly work >> around. >> >> Have you tried disabling DMA? >> >> Bart and Alan are IDE experts, they can probably give you more useful >> information. > > CSB5 is reliable, rock solidly so in my experience. OSB4 was the older > interface with problems. Are these systems SMP, what disks are you using > and in what IDE mode ? >
Yep, they are SMP(IBM blades with 2 Xeon 2.4Ghz). The blades use 1 little 40g laptop drive( TOSHIBA MK4019GAXB ). The drive is running UDMA mode 4. Here is the output of /proc/ide/svwks:
ServerWorks OSB4/CSB5/CSB6
ServerWorks CSB5 Chipset (rev 93) ------------------------------- General Status --------------------------------- --------------- Primary Channel ---------------- Secondary Channel ------------- enabled enabled --------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------ DMA enabled: yes yes no no UDMA enabled: yes yes no no UDMA enabled: 4 4 0 0 DMA enabled: 2 2 2 2 PIO enabled: 4 4 ? ?
Let me know if you need any other specifics and thanks in advance for any advice.
Rich
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