Winnie Lacesso wrote:
Greetings,

We'll buy server hardware soon to run a critical app that requires SL3. Upgrade to SL4 later is probably a go, but initially it must be SL3.

If your new CPU supports virtualisation, then running SL3 in a virtual machine under SL5 changes the question quite a deal, and may also give you the option of running additional loads (including Windows if needed).



So SL308 would load with 2.4.21-47.0.1.ELsmp & yum update to 2.4.21-50.ELsmp.
The hardware may have Tyan S2925G2NR mobo which has nvidia nForce Pro 3400
chipset, with nvidia MCP55 SATA controller.
Some hunting shows:

. SL3.0.8 release notes: Nvidia Nforce(motherboard chipset) drivers: IDE is supported. NO SUPPORT for ethernet, audio, sata.

  That sounds bad. But:

. "Newer NVIDIA chipsets are AHCI, and use the ahci driver not sata_nv"
. both sata_nv & ahci drivers in SL3 . both sata_nv & ahci driver said "production" maturity
. "libata AHCI driver ahci became available starting 2.4.29-preX ..."
(that's later than SL308 kernel)

Questions:

. would the version of the ahci driver in SL3 be older than the version in SL4? . If it is older, would an older ahci driver version in SL3 have any problem driving the nvidia MCP55 (or possibly even newer if a newer mobo) SATA controller?

. If ahci can't or won't, will SL3 understand to use sata_nv driver instead? And would sata_nv have any problem driving the nvidia MCP55 (or possibly even newer if a newer mobo) SATA controller?


many many thanks



--

Cheers
John

-- spambait
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