Restore behind USB hub problem

[Daniel]

Hi all,

I am trying to use TCL 3.8rc2 on an usb key (with syslinux 4.04).
Boot perfectly on my machine (with backup configuration).

BUT if i put the usb key behind an usb hub, no restore is done at boot time!

I join /var/log/messages ... here : http://dl.free.fr/r7e3KNFJ9

I don't know if it is a TCL problem or a maybe BIOS problem!

Thanks
Daniel.

[Edit]
I can't see usb boot device /dev/sdxx ... impossible to mount!

[Juanito]

perhaps you need to increase the usb boot delay when your stick is behind a hub?

boot code "waitusb=x" - try x=10 for 10 seconds

[Daniel]

I do test with x=10: same results

Thanks
Daniel.

[Juanito]

Did you try referring to your stick using uuid or a label - maybe its name changes behind a hub?

see:

http://wiki.tinycorelinux.net/wiki:uuid

[Daniel]

No.
the normal syslinux command is

Code: [Select]

append boot=/ initrd=/tinycore.gz vga=789 modeset=1 kmaps=fr-latin9  quiet splash
It runs perfectly without usb hub.


I don't see my usb key in /dev/sdx ( i see /dev/sda +1 to 9 and /dev/sdb +1 to 9 ) : i have only 2 partitions.

it is as the usb boot key device is not seen on usb.

[edit]
I can't mount the device!
and if i force it, there is no file!

If i put an other usb key in the hub, it is seen.


D.

[Juanito]

You could try something like this:

Code: [Select]

label microcore
kernel /boot/bzImage
append initrd=/boot/microcore.gz quiet noswap tce=UUID=aaab6273-4a6c-4118-8eb2-e31a9b31edb3 waitusb=20:UUID=aaab6273-4a6c-4118-8eb2-e31a9b31edb3

..substituting your usb stick uuid and where "waitusb=20:UUID=.." means wait 20s or until device UUID=.. shows up on the usb bus.

Other than this, you could boot "base norestore" with your usb stick plugged directly into you machine and, once booted, remove the stick and reconnect behind the hub to check that it is recognised.

[Daniel]

First test : same results.

Second test : usb key not seen under usb HUB.
More : /dev/sda, /dev/sda1 and /dev/sda2 are missing (not /dev/sda3 to 9). (under usb HUB)
And no other usb key plugged is seen under usb HUB.

Thanks,
D.

[gerald_clark]

Maybe it is not a usb 2.x hub.  Can yo try another one?

[Juanito]

First test : same results.

I take it you mean you tried identifying the usb stick with a UUID and this didn't work with the hub, but it did work when plugged directly?

Second test : usb key not seen under usb HUB.

This would seem to indicate that this particular usb stick and the hub don't seem to work together.

And no other usb key plugged is seen under usb HUB.

..but earlier on you said "If i put an other usb key in the hub, it is seen."??

[Daniel]

D-Link USB2 Hub.

Yes, it runs without usb HUB and with UUID.
But not under usb Hub.


No. It runs with ubuntu and the same key.


Yes. it was.
It was not seen when i boot without usb Hub, and when i plug the boot device behind the ush hub after.
Then no other usb key is seen.

D.

[Edit]
syslinux.cfg param:

Code: [Select]

append boot=/ initrd=/tinycore.gz tce=UUID=2EEC-4DCC waitusb=20:UUID=2EEC-4DCC  vga=789 modeset=1 kmaps=fr-latin9 quiet splash debug syslog


[Daniel]

Be carreful : the problem may come from the BIOS.

I know there is BIOS problem with to many usb devices plugged!

But in this case, i don't know if it is that (after boot).

D.

[Rich]

Hi Daniel
What is the result of entering the following at the command line?
blkid -U 2EEC-4DCC

[maro]

Maybe it would help if we would know the fuller picture by having the complete 'dmesg' output for both boot scenarios (i.e. directly connected USB device and connected "behind" a USB bus). Something unexpected seems to happen here, so a bit more visibility might be helpful.

Daniel, would you please produce those two files and attach them here.

[Daniel]

blkid -U 2EEC-4DCC

result :

Code: [Select]

/dev/sda1

[Daniel]

directly connected USB device

http://dl.free.fr/vRO2ct2uF

connected "behind" a USB bus

http://dl.free.fr/h92iYKznR

D.