Bug#524199: linux-image-2.6.26-1-686: nfs unusable
Frankly, this deserves a higher bug rating than "important".
A Unix without a working NFS is not a Unix. At least not a usable one.
I can now confirm that downgrading to 2.6.18 seems to fix it. All 3
machines I have with diskless Lenny are still up and usable. By this
time they would have been out of commission with 2.6.26.
On Wed, 2009-04-15 at 13:52 -0400, John Morrissey wrote:
> On Wed, Apr 15, 2009 at 01:30:51PM +0100, Anton Ivanov wrote:
> > Overtime any system with NFS usage grinds to a crawl. While root or /usr
> > on NFS are most affected the same problem should affect other NFS usage.
> > The symptoms are extremely high system load,
> [snip]
> > The reason seems to be: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git&a=commitdiff&h=23918b03060f6e572168fdde1798a905679d2e06
>
> FWIW, we're also seeing this, on machines mounting several large NFS volumes
> that serve virtual accounts (i.e., they all have the same UID/GID and no
> shell access).
>
> After ~two days of uptime, these moderately loaded machines (running Apache,
> ProFTPD, and Courier IMAP) start spending >90% of CPU time in system state
> and become so unresponsive that they must be rebooted. Running the 2.6.28
> that was recently in sid (which contains the commit Anton mentions) fixed
> this.
>
> john
--
Understanding is a three-edged sword:
your side, their side, and the truth. --Kosh Naranek
A. R. Ivanov
E-mail: aivanov@sigsegv.cx
WWW: http://www.sigsegv.cx/
pub 1024D/DDE5E715 2002-03-03 Anton R. Ivanov <arivanov@sigsegv.cx>
Fingerprint: C824 CBD7 EE4B D7F8 5331 89D5 FCDA 572E DDE5 E715
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