>>>> On Wed, Sep 16, 2015 at 10:00 PM, Robert Moskowitz <rgm@xxxxxxxxxxxxxxx> >>>> wrote: >>>>> >>>>> I went searching for information on sata port multiplier and found: >>>>> >>>>> http://www.spinics.net/lists/arm-kernel/msg377619.html >>>>> >>>>> Is this still the status of this and if so how do I set >>>>> AHCI_HFLAG_NO_PMP to >>>>> true? >>>> >>>> Well if you read the message you reference it states: >>>> >>>> "So add a module parameter to enable pmp usage, and default this to off, >>>> so >>>> that directly attached disks keep working normally." >>>> >>>> So it seems if you use a multiple you need to do a different option >>>> than without so it indicates it would need it. If you do "modinfo >>>> ahci_sunxi" you'll see that actually the patch has landed and there is >>>> a enable_pmp parameter. So you'll need to create something like >>>> /etc/modprobe.d/sunxi.conf and add a line "options ahci_sunxi >>>> enable_pmp=1" line (no I've not verified that is correct so you'll >>>> need to check it) and reboot. >>> >>> >>> Ah, thanks! I will try that. I was looking at: >>> /boot/extlinux/extlinux.conf and adding to the append line something like: >>> >>> AHCI_HFLAG_NO_PMP=0 >>> >>> >>> So I would have been heading in the wrong direction... >>> >> Not entirely, it should also work having ahci_sunxi.enable_pmp=1 on kernel >> cmdline. >> Also, you may need to rebuild initramfs by running dracut -f after >> modifying modprobe.d files. >> >> >> So either way I may need to rebuild initramfs? I have yet to get this >> right. >> >> I boot with this option. It probably will not work; I will notice this. >> Then as root I issue 'dracut -f' then reboot? >> > No, if you modify kernel command line, you don't need to rebuild initramfs, > since module parameters are read from kernel cmdline. > But if you modify some of files in modprobe.d and impacted module is loaded > in initramfs environment, you need to rebuild initramfs to include those > modifications made in modprobe.d It only matters if he's booting the OS off the SATA, if it's rootfs is on MMC and say /home is on SATA is can load it later once root is switched. >> >>> >>>> >>>> Peter >>>> >>>>> But it seems there were more messages about this... >>>>> >>>>> >>>>> On 09/16/2015 03:34 PM, Robert Moskowitz wrote: >>>>>> >>>>>> I figured out the various ports on the muitiport card and have 2 sata >>>>>> drives I am testing with. >>>>>> >>>>>> One drive works fine. But two drives it is a bit of a guess which one >>>>>> will come in as /dev/sda (the mSD card is /dev/mmcblk0). And only one >>>>>> drive >>>>>> is visible. Or at least gparted is only seeing one. >>>>>> >>>>>> From messages back last fall? I had that this board would let me use >>>>>> multiple sata drives, so there seems to be something I am missing. >>>>>> >>>>>> Right now each item has its own power supply: Cubietruck, Multiport >>>>>> card, >>>>>> Drive1, and Drive2. So it is not a power issue (or shouldn't be). >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> arm mailing list >>>>>> arm@xxxxxxxxxxxxxxxxxxxxxxx >>>>>> https://admin.fedoraproject.org/mailman/listinfo/arm >>>>> >>>>> >>>>> _______________________________________________ >>>>> arm mailing list >>>>> arm@xxxxxxxxxxxxxxxxxxxxxxx >>>>> https://admin.fedoraproject.org/mailman/listinfo/arm >>> >>> >>> _______________________________________________ >>> arm mailing list >>> arm@xxxxxxxxxxxxxxxxxxxxxxx >>> https://admin.fedoraproject.org/mailman/listinfo/arm >> >> >> >> >> -- >> Pavel Holica >> >> > > > > -- > Pavel Holica _______________________________________________ arm mailing list arm@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/arm
