Date: Thu, 26 Feb 2015 15:42:02 -0700 From: "Kenneth D. Merry" <ken@FreeBSD.ORG> To: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> Cc: current@freebsd.org, scsi@freebsd.org Subject: Re: sa(4) driver changes available for test Message-ID: <20150226224202.GA14015@mithlond.kdm.org> In-Reply-To: <54EEEE1E.7020007@omnilan.de> References: <20150214003232.GA63990@mithlond.kdm.org> <20150219001347.GA57416@mithlond.kdm.org> <54EEEE1E.7020007@omnilan.de>
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On Thu, Feb 26, 2015 at 10:57:50 +0100, Harald Schmalzbauer wrote: > Bez?glich Kenneth D. Merry's Nachricht vom 19.02.2015 01:13 (localtime): > > I have updated the patches. > > > > I have removed the XPT_DEV_ADVINFO changes from the patches to head, since > > I committed those separately. > > > > I have (hopefully) fixed the build for the stable/10 patches by MFCing > > dependencies. (One of them mav did for me, thanks!) > > > > Rough draft commit message: > > > > http://people.freebsd.org/~ken/sa_changes_commitmsg.20150218.1.txt > > > > The patches against FreeBSD/head as of SVN revision 278975: > > > > http://people.freebsd.org/~ken/sa_changes.20150218.1.txt > > > > And (untested) patches against FreeBSD stable/10 as of SVN revision 278974: > > > > http://people.freebsd.org/~ken/sa_changes.stable_10.20150218.1.txt > > Ken, > > thank you very much for your work! > Last sa(4) overhaul (with 10.0 I guess) was a great success and I highly > appreciate your work on tape support for FreeBSD! > I compiled your 10-stable patchset for one machine with LTO2 and DDS5 > drives, but haven't done much testing since I'll replace the adaptec > (39160) because it's maxio is limited to 64k (while 53c1020 has 128k). > sa(4) seems to work just fine with both drives, mt(1) showing "Reported > File/Record Number" :-) No EOM tests done so far? I'm glad it is working well for you! You can do larger I/O sizes with the Adaptec by changing your MAXPHYS and DFLTPHYS values in your kernel config file. e.g.: options MAXPHYS=(1024*1024) options DFLTPHYS=(1024*1024) If you set those values larger, you won't be able to do more than 132K with the sym(4) driver on an x86 box. (It limits the maximum I/O size to 33 segments * PAGE_SIZE.) > I'll archive zfs streams, therefore I needed some kind of forward error > correction. Probably people following this thread also have found to > need this, therefore I'd like to point to the new port misc/vdmfec > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197950 > Perhaps someone want's to take this bug report. That looks cool. :) I'm not a ports committer, but hopefully one of them will pick it up. Ken -- Kenneth Merry ken@FreeBSD.ORG
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