Messages in this thread | | | Subject | Re: max_scsi_luns and 2.4.19-pre10. | From | Austin Gonyou <> | Date | 26 Jun 2002 12:50:19 -0500 |
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On Wed, 2002-06-26 at 11:07, Kurt Garloff wrote: > Hi Austin, > > On Wed, Jun 26, 2002 at 09:18:45AM -0500, Austin Gonyou wrote: > > On Wed, 2002-06-26 at 07:33, Kurt Garloff wrote: > > > enough guesses have been there not answering your questions ... > > > > Sure I hear that. But I posted an earlier question about QLA2200 and a > > You don't think that somebody who reads your message and tries to post a > helpful comment scans the list for earlier messages of yours, do you? > Well, I do, especially if someone says it's an urgent thing to try and get the whole story. If I don't have time, I'll ask someone to give more info, which you did and I respect that and thank you.
> > PV 660F and not seeing > 8 luns with 2.4.19-pre10. > ^^^^^^^ > > This device needs BLIST_LARGELUN.
I got that from your earlier post and addressed it directly. Thanks for the pointer. I didn't know the 660 was defined explicitly in the scsi_scan.c I've since recompiled several kernel versions to assert this as being true with the BLIST_LARGELUN option and it's definitely fixed my problems there.
> > I'll take a look at that, and see if I can merge it into -aa4. > > The patch should be in there, just not the additional devices that need > BLIST_LARGELUN. > > > > The flag does allow a device to use more than 8 LUNs despite it reporting > > > as SCSI Version 2 devices (which can not support more than 8 LUNs normally > > > ...) > > > The flag also needs to be set for some more devices, look for DGC, DELL, CMD > > > and CNSi/CNSI devices that already have the BLIST_SPARSELUN flag. > > > > This would be a DELL device, so I'll see about changing it from > > SPARESLUN to LARGELUN? > > No. Add " | BLIST_LARGELUN" .
Yep, Did that. Again Thanks!
> > > But as you did not post the output of /proc/scsi/scsi nor the syslog > > > meesages from your SCSI subsystem nobody knows what devices you're using or > > > what actually happens. Just speculations ... > > > > There's nothing to post from /proc/scsi/scsi or the syslog other than > > there's no more than 8 devices on my FC chain. I guess the real point > > here is that if you're using FC, you're probably going to use more than > > 8 luns, even if not immediately. Especially for large Databases. > > People could have seen what SCSI device you're using. > So I could have told you instead of guessing and risking to add to the noise > myself.
I hear you loud and clear. I wouldn't have made so much noise myself had it not been a *top* priority item that I couldn't find info on anywhere else, plus the boss putting pressure too. Soon, this system will be a 6650 with PV 660F, 8GB RAM, using Linux with Oracle8.1.7.2, XFS, 0(1) scheduler and nearly a TB of total DB.
I have some results from my benchmarking which are quite astounding too.
> Regards, > -- > Kurt Garloff <garloff@suse.de> Eindhoven, NL > GPG key: See mail header, key servers Linux kernel development > SuSE Linux AG, Nuernberg, DE SCSI, Security -- Austin Gonyou <austin@digitalroadkill.net> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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