[mythtv-users] Quick-boot linux?
Yan Seiner
yan at seiner.com
Tue Feb 19 04:36:27 UTC 2008
Brian Wood wrote:
> Yan Seiner wrote:
>
>> Andy Burns wrote:
>>
>>> On 19/02/2008 00:11, Yan Seiner wrote:
>>>
>>>
>>>
>>>> The SCSI subsystem seems to be the headache for S3.
>>>>
>>>> Basically, the SCSI subsystem needs a bus reset on boot. I can reset it
>>>> just fine with sg_reset - but that utility is not accessible without
>>>> resetting the scsi bus.
>>>>
>>>>
>>> Mount a little ramdisk with a copy of sg_reset before sending it to sleep?
>>>
>>>
>> Thought of that. It's not statically linked; it needs libc6. Anyone
>> know how I go about stuffing both libc6 and a user program into a
>> ramdisk and deal with the linker correctly?
>>
>> (I guess I could also build a static version.... Or I could just drop
>> an IDE drive into the box and be done with it?)
>>
>
> Building static would be a lot less failure-prone than an IDE drive.
>
> I saw a 60 terrabyte compact-flash unit advertised, thought about it but
> the $32,000 price tag made me hesitate :-)
>
> Maybe they would trade for my truck ?
>
Got it!
Set up a tmpfs, populate it with sg_reset and libc6, and invoke it from
ususpend-ram.conf
OnResume 99 LD_LIBRARY_PATH=/mnt/tmpfs /mnt/tmpfs/sg_reset -b /dev/sda
Works like a charm. Full start in ~15 seconds, of which 5 or so is SCSI
related.
--Yan
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