lkml.org 
[lkml]   [1998]   [Mar]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectSYN flood = VFS: No free inodes - contact Linus?

We've got a beefy server here that's crashed twice today. I dont know what
the cause of the crash, but syslog reported "VFS: No free inodes - contact
Linus" then a mix of SYN cookie warnings and inode warnings.

Specs:
ALR revolution 6x6 (6x ppro200)
2.0.30
tulip.c 0.77 (only one stable with smp, locked in at 100bT/FD)
DPT 3334UW controller
BusLogic BT-950

syn/rst cookies on
always defrag
filehandles patch
ip_fragment.c patch (alan cox's and mount's)


It looks like the VFS error came first, then the spew of SYN warnings and
more VFS errors. Is this a problem with the filesyste? syn/rst cookies?

This system hosts ~3500 web sites and has _800_ ip aliases, so its a
regular target of attacks (any one of 800 ips), but this is the most nasty
crash it has experienced. This specific crash has happened twice in a
month.

Any ideas what could be going on?


I'm not a subscriber to this list, so please respond directly

- liem
============================================================================
Liem Bahneman roland@cobaltgroup.com
Senior Systems Administrator http://www.cobaltgroup.com/~roland
The Cobalt Group (206) 269-6363 x300
Seattle, Washington F(206) 269-6350

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu

\
 
 \ /
  Last update: 2005-03-22 13:41    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site