[Bug 551879] [NEW] Boot speed 20+ minutes, system in continuous I/O wait

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Binary package hint: ureadahead

I upgraded to 10.04 beta from 9.10 as soon as i could using "update-
manager -d". the install went fine, rebooted remarkably fast, and ran
beautifully. I restarted my system after applying updates, loaded into
plymouth, at which point the boot hung with all the little lights on
under the plymouth emblem red and not cycling. my hdd access light was
on, so i figured i'd restart once the light went out. 20 mins later, the
system actually loaded. I didn't like the 20 boot time, and figured it
may have been an error in the update, so i downloaded the live cd.
again, loaded beautifully, installed fine, restarted quickly, installed
updates, rebooted again and again the system hung at plymouth. the drive
seems to make a *CLICK,click* sound. I was not having any luck finding
anybody else on the forums with these same or similar symptoms, so i
assumed maybe it was the cd, so i downloaded the alt install cd with the
same exact effect. I have tried loading grub2 without the "quiet" and
"splash" options, with the same basic results (hang after text boot, no
splash). Funny thing is, no matter how long the boot actually takes, the
bootchart shows under 400 secs.

Ubuntu lucid (development branch) 10.04 beta1
ureadahead ver. 0.100.0-4.1
kernel 2.6.32-18.27

here are links to the boot charts from the ureadahead test suggested by
keybuk in the "all about ureadahead" sticky;

test 1 with ureadahead.conf disabled:
http://yfrog.com/1abenderlucid201003301wp

test 2 reprofiling:
http://yfrog.com/12benderlucid201003302p

test 3 standard:
http://yfrog.com/jcbenderlucid201003303p

I also saved a copy of "sudo ureadahead --dump":
http://docs.google.com/leaf?id=0B-qU_ryw50fpMTdkMzVmODEtNWRlNi00ZDFmLTk3OTMtZGVlY2VmNTU5ZThh&hl=en

Thank you for your time on this -BEER!!!

** Affects: linux (Ubuntu)
     Importance: Medium
         Status: Incomplete

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Boot speed 20+ minutes, system in continuous I/O wait
https://bugs.edge.launchpad.net/bugs/551879
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