[Mageia-dev] Why is AHCI statically compiled into kernel?

Tue Mar 5 16:41:38 CET 2013

R James skrev 5.3.2013 17:20:
+> I remember when PATA (IDE) drivers were statically compiled into the
+> kernel, then we went to modular IDE which I liked because modprobe
+> ordering could be controlled. (When dealing with parity RAID, its nice
+> to have logical drive enumeration because SATA ports don't have UUID
+> labels.)
+>
+> But now it seems we've come full circle:
+>
+> [root at localhost ~]# grep SATA_AHCI /boot/config-3.8.1-desktop-1.mga3
+> CONFIG_SATA_AHCI=y
+> CONFIG_SATA_AHCI_PLATFORM=y
+>
+> Is there a compelling reason to do this (other than AHCI is popular)?
+>
+
+
+It's needed to be able to boot new hw without need for initrd.
+
+https://wiki.mageia.org/en/Feature:BootSansRamdisk
+
+
+
+> I'm putting together a home-brewed a file server using an old
+> motherboard plus a couple of add-in SATA controllers. With the Mageia
+> stock kernel, the enumeration looks like:
+>
+> sda = RAID disk 08 (ahci)
+> sdb = RAID disk 09 (ahci)
+> sdc = RAID disk 10 (ahci)
+> sdd = RAID disk 11 (ahci)
+> sde = Mageia OS (sata_nv) (1st port on mobo)
+> sdf = RAID disk 01 (sata_nv)
+> sdg = RAID disk 02 (sata_nv)
+> sdh = RAID disk 03 (sata_nv)
+> sdi = RAID disk 04 (sata_sil)
+> sdj = RAID disk 05 (sata_sil)
+> sdk = RAID disk 06 (sata_sil)
+> sdl = RAID disk 07 (sata_sil)
+>
+> Of course its no problem to re-compile the kernel with AHCI as a module
+> so I can modprobe it last. Just wondering why AHCI is now the exception
+> to modular sata...?
+>
+
+--
+Thomas
+
+
+