Date: Tue, 04 Aug 1998 21:51:25 -0700 From: Mike Smith <mike@smith.net.au> To: Brett Taylor <brett@peloton.physics.montana.edu> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: couple of questions Message-ID: <199808050451.VAA00618@antipodes.cdrom.com> In-Reply-To: Your message of "Tue, 04 Aug 1998 14:05:31 MDT." <Pine.BSF.3.96.980804135200.25224A-100000@peloton.physics.montana.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
> > - maximum file/partition size: > > - I've seen files (from an ls -l emailed to me) of ~ 7 GB, but > I'm not sure what the absolute maximum file size is. Is there > a hard limit? > - digging through the -current mailing list archive I found a note > from John Dyson saying the maximum partition size was 512 GB. > Is this still true (the note was from 97) and if so does it also > apply to 2.2.7? As previously discussed, the current cap is at 512GB. > - swap partitions > > - what's the maximum swap partition size? I seem to recall > reading on -current about someone w/ a 1 GB swap partition, but > my memory has been known to be faulty. Swap calculations are generally performed using signed integers to contain block numbers, so total swap appears limited to about 2^31 * 512 bytes (1TB if my mental shifting is correct). The partition limit size is the same for swap partitions. > - what's the maximum number of swap partitions you can have? The system default is to support 4 swap partitions, however this can be tuned with the NSWAPDEV kernel option. There does not appear to be a trivial limit; the hard limit would be around 2^31 again. > - multi-disk file systems > > - in the chart he references Caldera having "md" - I'm not sure > what this is. Any ideas? My interpretation was say /usr on > 1 disk, /tmp on another or something, but I'm still waiting for > an answer. If it helps he has "volume sets" listed under NT and > ODM under SCO Unixware FreeBSD supports the 'ccd' software RAID0/1 implementation, and a new implementation of same named Vinum is under development. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199808050451.VAA00618>