Date: Thu, 17 Jan 2013 07:57:01 -0800 From: Devin Teske <devin.teske@fisglobal.com> To: =?iso-8859-1?Q?Ali_Okan_Y=DCKSEL?= <kaox.gen@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: disadvantages of running 8.3 kernel on freebsd 8.2 system Message-ID: <9A20C472-593A-4AAB-A0C0-FE6375011DAD@fisglobal.com> In-Reply-To: <CANiJOX3Q7e1q7=4yvF6Hy%2BLRGZMqpyVrim7nxefeQViO86CvgQ@mail.gmail.com> References: <CANiJOX3Q7e1q7=4yvF6Hy%2BLRGZMqpyVrim7nxefeQViO86CvgQ@mail.gmail.com>
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On Jan 17, 2013, at 4:06 AM, Ali Okan Y=DCKSEL wrote: > I know for UPDATING, it s not correct way, but i tried and 8.2 system wor= ks > with 8.3 kernel (copied 8.3 /boot/kernel directory to freebsd 8.2 > /boot/kernel) and it s not good solution but i want to know; >=20 >=20 > - What are specific disadvantages that i can see clearly, running 8.3 > kernel on freebsd 8.2? A couple user land tools might barf on you (listed below). Other than that, it's generally considered very safe. The quintessential test-case is running an 8.2 jail under an 8.3 host. We do this all the time with various releases (again, most-problematic util= ities listed below). > - What are user land tools those not match with 8.3 kernel on freebsd > 8.2 system=85? >=20 top and ps might complain about procsize mismatch. netstat has been known to have problems if the gap is too wide. That's about all that I can think off the top of my head. The quick solution is to just grab the 8.3-R copies of top, ps, and netstat= *IFF* they cause problems (e.g., ps immediately dies with "procsize mismat= ch" error). --=20 Devin P.S. Been doing this kind of mismatching of kernel/userland for YEARS (all = the way back to 4.4/4.8) and top and ps always prove to be problematic. _____________ The information contained in this message is proprietary and/or confidentia= l. If you are not the intended recipient, please: (i) delete the message an= d all copies; (ii) do not disclose, distribute or use the message in any ma= nner; and (iii) notify the sender immediately. In addition, please be aware= that any message addressed to our domain is subject to archiving and revie= w by persons other than the intended recipient. Thank you.
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