Date: Wed, 21 Mar 2007 15:58:42 -0500 (CDT) From: "Jonathan Horne" <freebsd@dfwlp.com> To: freebsd-questions@freebsd.org Subject: Re: started playing with jails Message-ID: <49413.167.246.36.14.1174510722.squirrel@webmail.dfwlp.org> In-Reply-To: <4601626B.1070702@scls.lib.wi.us> References: <42991.167.246.36.14.1174490156.squirrel@webmail.dfwlp.org> <4601501C.3060605@gmail.com> <10072.167.246.36.14.1174492472.squirrel@webmail.dfwlp.org> <20070321121031.d95cadf6.wmoran@potentialtech.com> <46015BFD.4060806@scls.lib.wi.us> <20070321122852.8eaa2663.wmoran@potentialtech.com> <4601626B.1070702@scls.lib.wi.us>
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> Bill Moran wrote: >> In response to Greg Barniskis <nalists@scls.lib.wi.us>: >> >>> Bill Moran wrote: >>> >>>> I've had trouble getting programs that use shared memory (such as Postgres) >>>> to run inside a jail, but it's been a while since I've tried. >>> Postgres needs this in the host rc.conf: >>> >>> jail_sysvipc_allow="YES" >> >> My experiments with Postgres in jail predate the existence of that setting. >> When I was working with it, you had to frob a sysctl via /etc/sysctl.conf >> >> But even then, I couldn't seem to get it to work -- the Postgres in the >> jail would corrupt the shared memory of the postgres outside the jail. >> It was ugly. Imagine big, wet tears rolling down my cheeks. >> >> I haven't had the need to try it in a while, so it might work OK now, I >> just don't know. >> > > Ah, now that you mention it I do recall discussions of multiple > instances peeing in each others pools so to speak. I also thought > there was discussion of how to fix it, but have no idea where that > went if anywhere... > > A single instance inside a jail does work quite happily if the knob > above is set. > > -- > Greg Barniskis, Computer Systems Integrator > South Central Library System (SCLS) > Library Interchange Network (LINK) > <gregb at scls.lib.wi.us>, (608) 266-6348 what is the best method for backup? just back up the whole thing as if it were "files" on my host? thanks, jonathan
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