Re: 2.4.22-pre3 and reiserfs boot problem - Carl-Daniel Hailfinger

From: Carl-Daniel Hailfinger <c-d.hailfinger.kernel.2003@gmx.net>
To: Stephan von Krawczynski <skraw@ithnet.com>
Cc: Marcelo Tosatti <marcelo@conectiva.com.br>,
	Oleg Drokin <green@namesys.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.22-pre3 and reiserfs boot problem
Date: Thu, 10 Jul 2003 16:20:14 +0200	[thread overview]
Message-ID: <3F0D761E.2050702@gmx.net> (raw)

Having read the whole thread, I came up with a few ideas.

The following patches in -pre3 could perhaps have to do something with
your problems:
  o (resend) collected semaphore fixes and semtimedop
  o Fix potential IO hangs and increase interactiveness during heavy IO
  o fix false sharing of mm info
  o fix up semops and return, allow timedop
  o mremap VM_LOCKED move_vma
  o remove io_apic_modify - this doesnt work on some APICs
  o small setup-pci cleanups

Since your hangs are not even traceable with SysRq, please try to boot
with nmi_watchdog=1 and if that doesn't work (dmesg will complain)
nmi_watchdog=2. About 15 seconds after the hang your box should print a
backtrace.

As a last resort you could mount the fs from UML.

I suggest you try the nmi_watchdog thing first.

Carl-Daniel
-- 
http://www.hailfinger.org/