Re: [GENERAL] [HACKERS] urgent: upgraded to 8.2, getting kernel panics
On Fri, Feb 23, 2007 at 18:14:25 -0500, Tom Lane [EMAIL PROTECTED] wrote: Merlin Moncure [EMAIL PROTECTED] writes: On friday we upgraded a critical backend server to postgresql 8.2 running on fedora core 4. Umm ... why that particular choice of OS? Red Hat dropped update support for FC4 some time ago, and AFAIK the Fedora Legacy project is not getting things done. How old is the kernel you're using? The Fedora Legacy project is officially gone now. ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [GENERAL] [HACKERS] urgent: upgraded to 8.2, getting kernel panics
On Mon, Feb 26, 2007 at 15:57:02 +0200, Devrim GUNDUZ [EMAIL PROTECTED] wrote: Upgrading OS will probably solve your problem; since there is no way to upgrade FC4 kernel unless you want to compile kernel source on your system. And good luck with that. Fedora still back patches stuff from later kernels than the one you think you have based on the name. Building a Linus kernel and getting the right mix of versions to work on a particular version of Fedora might be hard to do. If you can find the patch that fixes the problem, your best bet (assuming you have to use FC4) would be to try to apply that fix to the latest Fedora kernel for FC4. ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
Re: [GENERAL] [HACKERS] urgent: upgraded to 8.2, getting kernel panics
Hi, On Mon, 2007-02-26 at 08:24 -0500, Merlin Moncure wrote: we tried update to the latest via yum update with no help. As Tom stated, FC4 is no more supported; therefore you won't be able to get newer kernel via yum. as promised, here is the best photo of the panic we could get: http://img144.imageshack.us/my.php?image=dumpic6.jpg ...bad locking... The picture reminded me a SCSI driver bug in older kernels -- I google'd again now and I saw a post that says native drivers are being used in FC5+ kernels. If this is the real case, you may hit the problem sometime later. Upgrading OS will probably solve your problem; since there is no way to upgrade FC4 kernel unless you want to compile kernel source on your system. Regards, -- Devrim GÜNDÜZ PostgreSQL Replication, Consulting, Custom Development, 24x7 support Managed Services, Shared and Dedicated Hosting Co-Authors: plPHP, ODBCng - http://www.commandprompt.com/ signature.asc Description: This is a digitally signed message part
Re: [GENERAL] [HACKERS] urgent: upgraded to 8.2, getting kernel panics
On 2/23/07, Tom Lane [EMAIL PROTECTED] wrote: Merlin Moncure [EMAIL PROTECTED] writes: On friday we upgraded a critical backend server to postgresql 8.2 running on fedora core 4. Umm ... why that particular choice of OS? Red Hat dropped update support for FC4 some time ago, and AFAIK the Fedora Legacy project is not getting things done. How old is the kernel you're using? At this juncture we are going to downgrade the postmaster back to 8.1 and see if that fixes the panics. Even assuming that Postgres is related to the panics, I don't think you will find anyone maintaining that a kernel panic is not the kernel's problem. If an application *is* able to provoke a kernel panic, the standard description of the problem would be critical kernel security flaw. I vaguely remember running into spinlock problems with FC4 and it wasn't due to PostgreSQL. We didn't have database running on FC4. If you are running a critical server you should switch to atleast CentOS.