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    SubjectRe: Switching from (deprecated) IDE driver -> SATA (PATA support)
    Date
    On Sunday 25 January 2009, Justin Piszcz wrote:
    >
    > On Sun, 25 Jan 2009, Bartlomiej Zolnierkiewicz wrote:
    >
    > > On Sunday 25 January 2009, Justin Piszcz wrote:
    > >> When switching (removing IDE support) in favor of the new PATA support
    > >> under the SATA menu, is there any best practice/or method of knowing what
    > >> the new root hdd will be upon reboot?
    > >>
    > >> Example:
    > >> If I have 10 sata disks and 2 IDE disks on various cards/controllers, how
    > >> do I know /dev/hda will become /dev/sda? In one test on a system I have
    > >> here, /dev/hda became /dev/sdb2 after reboot, not an issue if the box is
    > >> local, but if the box is remote, how do you cope with this? I ask now
    > >> because some IDE drivers have been removed (nvidia I believe? in 2.6.28)
    > >> and I cannot upgrade the kernel anymore unless I move to the
    > >> PATA-supported SATA driver, but I have no idea what the root disk will be
    > >> after a reboot and there is a high probability it will not come back after
    > >> a reboot..
    > >
    > > Hmmm? That's news to me and I wonder where did you hear that?
    > >
    > > The only driver that got removed recently was HPT34X (for very, very
    > > old HPT controllers) which was broken for ages. In reality we are
    > > adding new IDE host drivers and not removing them.
    > >
    > > In 2.6.28 we got support for TX4938 and TX4939 chipsets. 2.6.29-rc1
    > > contains a new driver for IT8172 and 2.6.29-final will hopefully have
    > > drivers for AT91 and CS5536 chipsets. Moreover except CS5536 all of
    > > above chipsets are not support in other ways under Linux...
    > >
    > > While we are at it 2.6.29 also got a whole bunch of updates to the core
    > > IDE code -- this includes complete rewrite of locking scheme (which
    > > is now superior to some other solutions), latency improvements for IRQ
    > > handling and port of ide-cd over generic ATAPI support (not to mention
    > > whole stack of bugfixes and cleanups).
    > >
    > > Thanks,
    > > Bart
    > >
    > > PS as usual I encourage people to try different solutions and choose
    > > whatever works best for them (please also remember that giving feedback
    > > is very important if you want to see some things improved).
    > >
    >
    > Correction, it was the HPT controller as you noted, broken? Was working
    > for me in 2.6.26.3 :)
    >
    > CONFIG_BLK_DEV_HPT34X=y
    > # CONFIG_HPT34X_AUTODMA is not set
    > CONFIG_BLK_DEV_HPT366=y

    HPT34X driver got removed not HPT366.

    However if you need we can bring support for HPT34x hardware back. :)


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