On Mon, 20 Oct 2008, Alvaro Herrera wrote:
My Debian system (now running Linux 2.6.26) is no longer dumping core files, and I can't figure out why :-(
My guess is that you're being nailed by one of the changes related to implementing the improved capabilities interface made in 2.6.25 or 2.6.26. I know that broke some libpcap versions for example: http://lkml.org/lkml/2008/4/22/18
I haven't upgraded a Debian system to a kernel that new yet myself to know specifically what's wrong, the blog posting at http://linux-man-pages.blogspot.com/2008/05/capabilities-have-fully-arrived-finally.html is a good starter point to dig for more info. If I had to make a guess I'd suspect whatever is dumping core doesn't have the CAP_SYS_RAWIO capability needed to access /proc/kcore and you need to tweak a file related to that area rather than the ulimit stuff.
Also worth mentioning is that you may need to adjust /proc/sys/fs/suid_dumpable (see http://manpages.courier-mta.org/htmlman5/proc.5.html ) and that there have been distributions that just broke even the CAP_SYS_RAWIO interface at the kernel level; see http://vir.homelinux.org/blog/archives/30-Lost-time.html for an example.
-- * Greg Smith gsmith@xxxxxxxxxxxxx http://www.gregsmith.com Baltimore, MD -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
