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On 4/18/2014 1:38 PM, Joost Roeleveld wrote: |
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> On Friday 18 April 2014 10:01:35 Brian Hesdorfer wrote: |
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>> On 4/18/2014 9:05 AM, Joost Roeleveld wrote: |
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>>> On Friday 18 April 2014 12:02:01 Thomas Mueller wrote: |
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>>>> Is there a way to make Gentoo or other Linux allow extra time when root |
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>>>> is |
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>>>> on a USB device? Any way to say "just a second" or more like 15 seconds |
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>>>> before aborting with the message that root partition does not exist? |
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>>>> |
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>>>> In this case it's an IDE hard drive in a USB enclosure. |
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>>>> |
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>>>> FreeBSD seems to handle this situation better. I would get a |
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>>>> mountroot> |
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>>>> prompt, to which I would respond |
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>>>> ufs:/dev/ada0p3 |
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>>>> and be good. |
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>>>> |
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>>>> I could avoid this situation with /boot/loader.conf |
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>>>> |
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>>>> legal.realtek.license_ack=1 |
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>>>> rsu-rtl8712fw_load="YES" |
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>>>> kern.cam.scsi_delay="13000" # Delay (in ms) before probing SCSI |
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>>>> kern.cam.boot_delay="16000" # Delay (in ms) of root mount for CAM bus |
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>>>> hint.re.0.disabled="1" |
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>>>> |
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>>>> but don't know if Linux has anything like this. |
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>>>> |
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>>>> Only lines 3 and 4 are relevant to this issue; other lines are for |
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>>>> different issues. |
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>>>> |
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>>>> Tom |
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>>> Try adding " rootdelay = 15 " to the kernel commandline. |
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>>> This should make the kernel wait 15 seconds before trying to access the |
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>>> root- device. |
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>>> |
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>>> See: |
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>>> http://www.linuxtopia.org/online_books/linux_kernel/kernel_configuration/r |
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>>> e58.html |
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>>> |
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>>> I used this myself in the past when booting from USB-devices. |
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>>> |
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>>> Kind regards, |
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>>> |
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>>> Joost |
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>> Tiny Core linux, which is primarily booted over usb, does something |
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>> similar. If I'm understanding this right, they have a loop in their |
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>> initrd that just waits a maximum of X seconds until it shows up. |
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>> |
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>> I'm not sure how easy this would be to move into something else. |
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>> |
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>> Lines 114-128: |
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>> http://git.tinycorelinux.net/index.cgi?url=Core-scripts.git/tree/etc/init.d/ |
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>> tc-config |
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> " rootdelay " is a standard linux kernel option. No need to use a special |
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> script. |
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> |
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> -- |
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> Joost |
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|
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Agreed! Hadn't heard of that option until you mentioned it. Learn a new |
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thing everyday :) |
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