Alvaro Herrera wrote:
> Bruce Momjian wrote:
> >
> > Added to TODO:
> >
> > * Improve detection of shared memory segments being used by other
> > FreeBSD jails
> >
> > http://archives.postgresql.org/pgsql-hackers/2008-01/msg00656.php
>
> There's a bit more than that to it -- see
> http://ar
Bruce Momjian wrote:
>
> Added to TODO:
>
> * Improve detection of shared memory segments being used by other
> FreeBSD jails
>
> http://archives.postgresql.org/pgsql-hackers/2008-01/msg00656.php
There's a bit more than that to it -- see
http://archives.postgresql.org/pgsql-hackers/2008-01/
Added to TODO:
* Improve detection of shared memory segments being used by other
FreeBSD jails
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00656.php
---
Mischa Sandberg wrote:
> Here (@sophos.com) we run m
[EMAIL PROTECTED] (Mischa Sandberg) writes:
>Unfortunately, with multiple jails running PG servers and (due to app
>limitations) all servers having same PGPORT, you get the situation that
>when jail#2 (,jail#3,...) server comes up, it:
>- detects that there is a shm seg with ipc key 5432001
>- che
Stephen Frost <[EMAIL PROTECTED]> writes:
> I've got a couple of concerns about this-
> #1: Having the shared memory be global is a rather large problem when it
> comes to something like PG which can have a fair bit of data going
> through that area that could be sensitive.
Well, you'd
* Mischa Sandberg ([EMAIL PROTECTED]) wrote:
> Here (@sophos.com) we run machine cluster tests using FreeBSD jails. A
> jail is halfway between a chroot and a VM. Jails blow a number of
> assumptions about a unix environment: sysv ipc's are global to all
> jails; but a process can only "see" other
Mischa Sandberg <[EMAIL PROTECTED]> writes:
> Quoting Tom Lane <[EMAIL PROTECTED]>:
>> Mischa Sandberg <[EMAIL PROTECTED]> writes:
>>> + if (kill(1,0) && errno == ESRCH &&
>>> PGSharedMemoryIsInUse(0,NextShmemSegID))
>>> + continue;
>>
>> Isn't the last part of
Quoting Tom Lane <[EMAIL PROTECTED]>:
> Mischa Sandberg <[EMAIL PROTECTED]> writes:
> > + /* In a FreeBSD jail, you can't "kill -0" a
> postmaster
> > +* running in a different jail, so the shm seg
> might
> > +* still be in use. Safer to test nattch ?
Mischa Sandberg <[EMAIL PROTECTED]> writes:
> + /* In a FreeBSD jail, you can't "kill -0" a postmaster
> +* running in a different jail, so the shm seg might
> +* still be in use. Safer to test nattch ?
> +*/
> + if (kill(1
Here (@sophos.com) we run machine cluster tests using FreeBSD jails. A
jail is halfway between a chroot and a VM. Jails blow a number of
assumptions about a unix environment: sysv ipc's are global to all
jails; but a process can only "see" other processes also running in the
jail. In fact, the quic
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