Re: control files on an NFS share?
On Thu, Nov 16, 2000 at 06:04:31PM -0600, Ben Beuchler wrote: I am primarily concerned about files like 'rcpthosts'. They are read on every invocation of qmail-smtpd. Am I going to be looking at significant overhead from reading a file like that over NFS? Not if you turn the NFS caching options up high enough... I tried to set up /var/qmail/control on an NFS partition at some point, and it was failing. Or was that /etc/tcpcontrol for the CDBs? I forget now... It was very unhappy though, wouldn't run at all. Sean -- Do you think reading about cowboys is sufficient to ride a horse? Like horses, real programs tend to throw you. -- John Shipman, 1997 Sean Reifschneider, Inimitably Superfluous [EMAIL PROTECTED] tummy.com - Linux Consulting since 1995. Qmail, KRUD, Firewalls, Python
Re: control files on an NFS share?
On Tue, Nov 21, 2000 at 05:10:06PM -0700, Sean Reifschneider wrote: On Thu, Nov 16, 2000 at 06:04:31PM -0600, Ben Beuchler wrote: I am primarily concerned about files like 'rcpthosts'. They are read on every invocation of qmail-smtpd. Am I going to be looking at significant overhead from reading a file like that over NFS? Not if you turn the NFS caching options up high enough... I tried to set up /var/qmail/control on an NFS partition at some point, and it was failing. Or was that /etc/tcpcontrol for the CDBs? I forget now... It was very unhappy though, wouldn't run at all. Sean I think I'll leave 'em on local disks and just rsync 'em up... Sounds like the smart way to go. Ben -- Ben Beuchler [EMAIL PROTECTED] MAILER-DAEMON (612) 321-9290 x101 Bitstream Underground www.bitstream.net
control files on an NFS share?
Our one qmail/vpopmail server is about to become a node in a load balanced pool of mail servers. I plan to mount the queue via NFS (I am now, in fact) but am wondering about the control files. It seems that at least SOME of them should be safe to share over NFS. Any thoughts or recommendations? Thanks, Ben -- Ben Beuchler [EMAIL PROTECTED] MAILER-DAEMON (612) 321-9290 x101 Bitstream Underground www.bitstream.net
Re: control files on an NFS share?
On Thu, Nov 16, 2000 at 05:40:27PM -0600, Ben Beuchler wrote: Our one qmail/vpopmail server is about to become a node in a load balanced pool of mail servers. I plan to mount the queue via NFS (I am now, in fact) but am wondering about the control files. It seems that Ouch. You will, at some stage, lose mail this way. Is it actually working? at least SOME of them should be safe to share over NFS. Any thoughts or recommendations? Anything but queue is probably ok. Regards.
Re: control files on an NFS share?
On Thu, Nov 16, 2000 at 02:49:24PM -0800, [EMAIL PROTECTED] wrote: On Thu, Nov 16, 2000 at 05:40:27PM -0600, Ben Beuchler wrote: Our one qmail/vpopmail server is about to become a node in a load balanced pool of mail servers. I plan to mount the queue via NFS (I am now, in fact) but am wondering about the control files. It seems that Ouch. You will, at some stage, lose mail this way. Is it actually working? I mis-spoke. The queue is, of course, local. The spool is on the NFS share. I slipped into "boss speak" there for a second. My boss for some reason persists in referring to the spool as the queue... at least SOME of them should be safe to share over NFS. Any thoughts or recommendations? Anything but queue is probably ok. I am primarily concerned about files like 'rcpthosts'. They are read on every invocation of qmail-smtpd. Am I going to be looking at significant overhead from reading a file like that over NFS? Ben -- Ben Beuchler [EMAIL PROTECTED] MAILER-DAEMON (612) 321-9290 x101 Bitstream Underground www.bitstream.net
Re: control files on an NFS share?
Ben Beuchler [EMAIL PROTECTED] writes: Our one qmail/vpopmail server is about to become a node in a load balanced pool of mail servers. I plan to mount the queue via NFS (I am now, in fact) but am wondering about the control files. It seems that at least SOME of them should be safe to share over NFS. Any thoughts or recommendations? We have stored all configuration files (save 'me') on NFS for about 8 months now, with no problem. It does put quite a bit of additional strain on the NFS server, though; I'm looking at moving control to a RAMdisk, and just copying from the NFS server when qmail is restarted. We also store spool on NFS with no problems. We've stored queue on NFS in the past, and while we didn't see any lost mail, we did see huge performance problems, and had to move it to local storage. --ScottG.
