On Mon, Aug 15, 2011 at 6:02 PM, Derrick Brashear <[email protected]> wrote:
> On Mon, Aug 15, 2011 at 4:26 PM, Aaron Knister <[email protected]> wrote: > > On Fri, Aug 12, 2011 at 12:01 PM, Andrew Deason <[email protected]> > > wrote: > >> > >> On Thu, 11 Aug 2011 10:11:27 -0400 > >> Aaron Knister <[email protected]> wrote: > >> > >> > I know everyone's busy, but out of curiosity has anybody had a chance > >> > to look at this? Could it be that it's not even an AFS bug, but a > >> > linux kernel issue? I'm getting ready to put a webserver into > >> > production and am concerned because I can reliably trigger the > >> > mentioned kernel panic using "ab". > >> > >> I don't think it's likely that it's a linux kernel issue. If you want > >> something to try, you can try applying these two patches: > >> > >> > >> > http://git.openafs.org/?p=openafs.git;a=commitdiff_plain;h=910f3d4cbba4cd78a8e6afa0b32e37ed7f292d18 > >> > >> > http://git.openafs.org/?p=openafs.git;a=commitdiff_plain;h=35835af9bb85b358e4bdd11113b637ac0e52c56b > >> > >> Those fix what may be a similar issue, but I'm not really sure if it's > >> the same thing as here. If that doesn't do it (it's good that you have a > >> reliable way of reproducing this), we'll need to look more closely at > >> the core (if you don't want to provide it since it probably contains > >> file data, instructions can probably be provided, though it's a lot more > >> detailed than what we've done so far). Or we can proably go the route of > >> giving you debug patches, but I'm not quite sure what to add quite yet. > >> > > > > Hi Andrew, > > Those patches do prevent it from crashing, but also results in a number > of > > "permission denied" errors from the apache processes under heavy load > from > > ab. The permission denied errors don't occur with 1.6.0pre7. > > is there a reason 1.6.0pre7 isn't suitable, incidentally? > Not really, other than some of my colleagues had reservations about using a pre-release in production. > > -- > Derrick > -- Aaron Knister Systems Administrator Division of Information Technology University of Maryland, Baltimore County [email protected]
