Re: cubox i4x4 hard drive seen in D-I but not in installed system.
On 13/12/16 19:59, peter green wrote:
I have just bought a cubox i4x4 and installed Debian Jessie on it
using D-I (concatenatable netboot). I am using a SD card for the
rootfs and plan to use a hard drive to store chroots.
Unfortunately while I can see the hard drive in D-I I can't see it
after installing. The ahci_imx module seems to be loaded but sda
doesn't appear in /dev.
I upgraded to the kernel from backports. This made no difference.
Any idea how to go about troubleshooting this issue? the box isn't
much use to me if I can't make the hard drive work.
Ok, after some discussions on irc I discovered some more.
It seems that the system sees the port but fails to detect the drive.
[ 2.694758] ahci-imx 2200000.sata: fsl,transmit-level-mV value 1104,
using 00000044
[ 2.694778] ahci-imx 2200000.sata: fsl,transmit-boost-mdB value 0,
using 00000000
[ 2.694791] ahci-imx 2200000.sata: fsl,transmit-atten-16ths value 9,
using 00002000
[ 2.694802] ahci-imx 2200000.sata: fsl,receive-eq-mdB not specified,
using 05000000
[ 2.698172] ahci-imx 2200000.sata: SSS flag set, parallel bus scan
disabled
[ 2.698208] ahci-imx 2200000.sata: AHCI 0001.0300 32 slots 1 ports 3
Gbps 0x1 impl platform mode
[ 2.698223] ahci-imx 2200000.sata: flags: ncq sntf stag pm led clo
only pmp pio slum part ccc apst
[ 2.699973] scsi host0: ahci-imx
[ 3.014679] ahci-imx 2200000.sata: no device found, disabling link.
[ 3.014690] ahci-imx 2200000.sata: pass .hotplug=1 to enable hotplug
However if I unload and reload the driver then it sees the drive
successfully.
I would guess at this point either a race condition or a power glitch
(maybe powering the HDD off one of the USB ports wasn't such a good idea).
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