Date: Tue, 18 Dec 2012 11:26:23 -0500 From: "xenophon\\+freebsd" <xenophon+freebsd@irtnog.org> To: <freebsd-stable@freebsd.org> Subject: RE: Custom Kernel for FreeBSD Installation Message-ID: <BABF8C57A778F04791343E5601659908236D3A@cinip100ntsbs.irtnog.net> In-Reply-To: <20121211220138.1f4bea85e278eca54b074daf@getmail.no> References: <BABF8C57A778F04791343E5601659908236D35@cinip100ntsbs.irtnog.net> <20121211220138.1f4bea85e278eca54b074daf@getmail.no>
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> From: owner-freebsd-stable@freebsd.org [mailto:owner-freebsd- > stable@freebsd.org] On Behalf Of Torfinn Ingolfsen > Sent: Tuesday, December 11, 2012 4:02 PM > > Not an answer to your question, but do you need to? > Can't the DL380 G3 boot from something else, like a usb image? The issue is with the ciss(4) driver restricting the maximum number of logical drives to 15 in order to limit the driver's memory requirements. If I understand it correctly, the driver allocates a certain amount of memory (under 4 GiB) for each logical drive for DMA. If an adapter exports more than 15 logical drives, the driver refuses to attach any of them and logs an error message like "adapter claims to report absurd number of logical drives (20 > 15)". On my server, I have 20 logical drives (20 single-disk RAID-0 arrays), so the driver won't work without modification. So, to close the loop on this, I modified the value of CISS_MAX_LOGICAL in src/sys/dev/ciss/cissvar.h and ran "make buildworld buildkernel". I think I had to install sysutils/cdrecord as well. Then, to create an installation CD from the newly built world, I ran "cd release; make cdrom -D NOPORTS -D NOSRC -D NODOC". This last step resulted in a file named "release.iso" in the "release" directory. I successfully booted the FreeBSD installer using the new image, and FreeBSD was able to detect and attach all 20 logical drives. Leon Kos suggested increasing the value of the CISS_MAX_LOGICAL constant (see http://www.freebsd.org/cgi/query-pr.cgi?pr=3D151564&cat=3Dkern), = but I think a boot-time tunable is a better approach. I'm currently testing this out and will submit patches if successful. Best wishes, Matthew --=20 I FIGHT FOR THE USERS
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