Date: Sat, 19 Feb 2005 17:45:12 +0800 From: Xin LI <delphij@delphij.net> To: Rong-En Fan <rafan@csie.org> Cc: scsi@freebsd.org Subject: Re: Problem with mpt(4) and Infortrend RAID Message-ID: <1108806312.602.17.camel@spirit> In-Reply-To: <20050219092300.GA95182@svm.csie.ntu.edu.tw> References: <20050204102558.GA2001@svm.csie.ntu.edu.tw> <1108667040.656.20.camel@spirit> <20050218071746.GA41419@svm.csie.ntu.edu.tw> <20050218202901.GA71842@svm.csie.ntu.edu.tw> <20050219061517.GA92149@svm.csie.ntu.edu.tw> <1108803317.602.13.camel@spirit> <20050219092300.GA95182@svm.csie.ntu.edu.tw>
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--=-NcBKV70H48hOQqD1g/9T Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Would you please try: camcontrol tags da1 To see how many tags are actually allowed for the device, at the host side? It comes to my mind that: =E5=9C=A8 2005-02-19=E5=85=AD=E7=9A=84 17:23 +0800=EF=BC=8CRong-En Fan=E5= =86=99=E9=81=93=EF=BC=9A > Maximum Queued I/O Count - 256 =20 > LUNs per Host SCSI ID - 8 =20 > Max Number of Concurrent Host-LUN Connection - Def(4) =20 > Number of Tags Reserved for each Host-LUN Connection - Def(32)=20 Here: You have allowed only 32, and if the host has exceeded the limitation, then something strange *may* happen. My bet is to decrease the tags allowed at host side, to something like 32: camcontrol tags da1 -N 32. It's also possible to modify cam_xpt.c to set the default number. > I'm not that similar with SCSI, if it possible some parameters > here need to tune? If you have a spare box, try to decrease the tag depth :-) Please be sure to decrease tag depth on every device. Cheers, --=20 Xin LI <delphij delphij net> http://www.delphij.net/ --=-NcBKV70H48hOQqD1g/9T Content-Type: application/pgp-signature; name=signature.asc Content-Description: =?UTF-8?Q?=E8=BF=99=E6=98=AF=E4=BF=A1=E4=BB=B6=E7=9A=84=E6=95=B0?= =?UTF-8?Q?=E5=AD=97=E7=AD=BE=E5=90=8D=E9=83=A8?= =?UTF-8?Q?=E5=88=86?= -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQBCFwqn/cVsHxFZiIoRAoDOAJ4hChNXsV6pxOS+zqQqXHrxP/RJmgCeKuRI 4HqG84LkJudWQ5pwOSbrh6U= =SNo3 -----END PGP SIGNATURE----- --=-NcBKV70H48hOQqD1g/9T--
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