[nSLUG] No CPU use stat from ps running bind in chroot

Crawford, Andrew (IT) Andrew.Crawford at morganstanley.com
Tue Jul 25 11:53:02 ADT 2006

Try stracing the ps in the chroot environment and note any file accesses. Other than that, I wonder if there's a difference in your chrooted execution environment in terms of libraries etc. In any case comparing all file opens in strace in regular vs chroot should shed light.

Andrew Crawford

> -----Original Message-----
> From: nslug-bounces at nslug.ns.ca [mailto:nslug-bounces at nslug.ns.ca] On
> Behalf Of D G Teed
> Sent: Tuesday, July 25, 2006 10:11
> To: nslug
> Subject: [nSLUG] No CPU use stat from ps running bind in chroot
> Hi,
> Here is a scenario...
> Two servers: both Debian 3.1 stable.
> One runs with -t /var/lib/named while the other doesn't.
> Both work properly.
> The chrooted bind will show 0:00 for processing time from ps -aux , while
> the non-chrooted case will show some processing time has elapsed.
> (The chrooted case is far more busy, as well, so it isn't simply a case
> of an idle service.)
> I checked the bind chroot howto and don't see anything I've missed.
> googling hasn't shown anything related to it thus far.
> My feeling is that I'm missing something in named's dev
> (I've got null, random and log) or similar.
> --Donald
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