-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 04/18/2014 01:49 PM, Brian Hesdorfer wrote: > On 4/18/2014 1:38 PM, Joost Roeleveld wrote: >> On Friday 18 April 2014 10:01:35 Brian Hesdorfer wrote: >>> On 4/18/2014 9:05 AM, Joost Roeleveld wrote: >>>> On Friday 18 April 2014 12:02:01 Thomas Mueller wrote: >>>>> Is there a way to make Gentoo or other Linux allow extra time when root >>>>> is on a USB >>>>> device? Any way to say "just a second" or more like 15 seconds before >>>>> aborting with >>>>> the message that root partition does not exist? >>>>> >>>>> In this case it's an IDE hard drive in a USB enclosure. >>>>> >>>>> FreeBSD seems to handle this situation better. I would get a mountroot> >>>>> prompt, to >>>>> which I would respond ufs:/dev/ada0p3 and be good. >>>>> >>>>> I could avoid this situation with /boot/loader.conf >>>>> >>>>> legal.realtek.license_ack=1 rsu-rtl8712fw_load="YES" >>>>> kern.cam.scsi_delay="13000" # >>>>> Delay (in ms) before probing SCSI kern.cam.boot_delay="16000" # Delay >>>>> (in ms) of >>>>> root mount for CAM bus hint.re.0.disabled="1" >>>>> >>>>> but don't know if Linux has anything like this. >>>>> >>>>> Only lines 3 and 4 are relevant to this issue; other lines are for >>>>> different issues. >>>>> >>>>> Tom >>>> Try adding " rootdelay = 15 " to the kernel commandline. This should make >>>> the kernel >>>> wait 15 seconds before trying to access the root- device. >>>> >>>> See: >>>> http://www.linuxtopia.org/online_books/linux_kernel/kernel_configuration/r >>>> e58.html >>>> >>>> I used this myself in the past when booting from USB-devices. >>>> >>>> Kind regards, >>>> >>>> Joost >>> Tiny Core linux, which is primarily booted over usb, does something >>> similar. If I'm >>> understanding this right, they have a loop in their initrd that just waits >>> a maximum of X >>> seconds until it shows up. >>> >>> I'm not sure how easy this would be to move into something else. >>> >>> Lines 114-128: >>> http://git.tinycorelinux.net/index.cgi?url=Core-scripts.git/tree/etc/init.d/ >>> tc-config >> " rootdelay " is a standard linux kernel option. No need to use a special >> script. >> >> -- Joost > > Agreed! Hadn't heard of that option until you mentioned it. Learn a new thing > everyday :) > >
There is also a "rootwait" option, which simply waits until the root device is available, no matter how long that takes. (So you don't end up waiting longer than required "just in case"). - -- Jonathan Callen -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCgAGBQJTUuiUAAoJELHSF2kinlg4qOIQALBaZwqhCpDAoPuDB2uKGoQB pOfoSJUYuP/XEsQJSOp3sjeMrJnlclGqe2KgFtVFZPZ7qYBthhqWY+c3q1Bnuggu HfJUD7W0R7H5AqvzFKltKPuTJ+3pvhV8C+QxuanV/vZdrqbiiLblOQvi7+ymUKfH Myfe3ogMKX4YPgqVoFw/1MlvxMDx+7a5nRlh4lqtJQgHR8294L7k9XUaSuk9NMT3 lflAjapgPx/0Ly3Nqcf/ilXjUaE6ND6hIEDsRCAMCrRU/E/1SVDvQra1w/wsuET1 VzoLvZGvnwINXhPeIJZshczeRlDmXOXJqegykjvfPWwJRx4CMcFghiNNSjrj9yoo YmnpSkRXpnzQZjJUIXVvFN1k+mThZsOj73FPkkOw9RF49KMvHT6zuxuCjAOzmP9I FmuA6qNP0ucaEzqzV8VyHeZcFCXk7afYc6izPAMkiq9h227hV6wCwKsNnc84Mgbw W96pEwrri5ZEaRF3aGfy99L4ciq17DiZRjwN7BBvLsJt2lP5NWxT8roXeoXQJoXc hav6xpd8fLTYZanyM5a9RKqCc40UHgq1gbzJegSnuiduBU8m6VtnqSMOtMGTWP9u ddqKafbtE/Niaf/OKLay6BsYemOLoyKGzJNLQ868GDtwDaxgapFHcqbqC6sMymmd v3s5D4d0DCbNtfi5WCYo =S+Ff -----END PGP SIGNATURE-----
