Date: Thu, 30 Jan 1997 19:37:49 -0800 From: David Greenman <dg@root.com> To: Simon Shapiro <Shimon@i-Connect.Net> Cc: Julian Elischer <julian@whistle.com>, freebsd-scsi@freebsd.org Subject: Re: NewComer Questions... Message-ID: <199701310337.TAA27509@root.com> In-Reply-To: Your message of "Thu, 30 Jan 1997 12:44:23 PST." <XFMail.970130154549.Shimon@i-Connect.Net>
next in thread | previous in thread | raw e-mail | index | archive | help
>> > 2. Naming conventions for /dev entries for such beasts. >> /dev/{r}sd[0-9][0-9] >> there is a limit at the moment to about 32 drives per machine >> (I think) but it's a rather artificial limit >> and could be removed relativly easily. > >Good. How is this limit imposed? I need to know. >We can have sd0-sdf. What we need is either sd00-sdff or (better?) >c[0-f]b[0-f]d[00-ff]s[0-400][a-h]. This gives you exactly 32 bits >minors which I noticed FreeBSD to use already. The "-current" limit is 512 disk devices...sd0 through sd511. I plan to bring this change into the 2.2 branch perhaps as early as tonight. >When the initializing routines are running, are interrupts enabled? That's a difficult question. It depends on which version of FreeBSD and what type of device (PCI/ISA) it is. Bruce might know the answer more specifically. >Is the VM totally functional? Yes, the VM system is initialized prior to any device probes/attaches. > Can one sleep in the initializing? No, but you can DELAY(). -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199701310337.TAA27509>