Date: Wed, 9 Feb 2011 00:09:36 +0530 From: Shivaram Upadhyayula <shivaram.u@quadstor.com> To: freebsd-scsi@freebsd.org Subject: aac, and CAM Message-ID: <AANLkTimQJ71S_eO8Dha_t-oamnk1oquEtycRP%2BUS7oC=@mail.gmail.com>
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Hi All, One of our VTL users has the following setup using a Adaptec 2410SA SATA RAID card. aacd0: <Volume> on aac0 aacd0: 238417MB (488279040 sectors) aacd1: <RAID 5> on aac0 aacd1: 476835MB (976558080 sectors) This is on FreeBSD 8.1 m/c unchanged and aacp would have been built into the kernel (as per the GENERIC conf file). camcontrol however fails to list the devices. camcontrol devlist -v scbus0 on ahc0 bus 0: <>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0 at scbus0 target -1 lun -1 () scbus-1 on xpt0 bus 0: <>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0 at scbus-1 target -1 lun -1 (xpt0) Interestingly when the user created a Simple Volume he was able to use the disk for the VTL purpose. Within our software we depend on a disk to be detected by the CAM subsystem. If camcontrol devlist can see it we can use the disk. Unfortunately we don't have the hardware the user has to debug the problem. Reading the manpage of aac "The aacp device enables the SCSI pass-thru interface and allows devices connected to the card such as CD-ROMs to be available via the CAM scsi(4) subsystem. Note that not all cards allow this interface to be enabled." Does this mean that i can get device files like (da0,pass0) and if so is it advisable to use the da0 for IO rather than using say aacd0 Any help is greatly appreciated. Regards, Shivaram -- QUADStor - Free VTL, NAS, Deduplication and Replication backup solution on FreeBSD http://www.quadstor.com
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