On Wed, 2007-01-17 at 16:04 -0500, Douglas Gilbert wrote: > Thayne Harmon wrote: > >>>> On Thu, Jan 11, 2007 at 1:15 PM, in message <45A69AD6.60207@xxxxxxxxxx>, > > Douglas Gilbert <dougg@xxxxxxxxxx> wrote: > >> Thayne Harmon wrote: > >>> Gentlemen, > >>> > >>> hwinfo, lshal, sysfs do not show the relationship for non- sg BLOCK devices > >> with there > >>> associated Host Bus Adapter. > >> All devices (i.e. logical units) have a 4 element tuple > >> associated with them and the first element is the host > >> number. A HBA contains one or more hosts. Then you can > >> datamine in /sys/class/scsi_host/host<n> for whatever > >> information you want. > >> > >>> Do you know of a utility or method that can show this? > >> May I suggest lsscsi. That won't help you in the lk 2.4 > >> series and earlier though There are other methods by > >> which the sg device corresponding to a "non- sg" block > >> device (e.g. /dev/sdc) can be found. > > > > [context - Linux testserver 2.6.16.21-0.8-smp i586] > > > > There is no corresponding sg device. The device file is > > /dev/cciss/c0d1. > > Ok, I'm not familiar with the cciss driver. It looks like > it lives outside the linux scsi subsystem but according > to Documentation/cciss.txt it can subsequently "engage" > the scsi subsystem?? > > If it is outside the scsi subsystem then it doesn't > get corresponding sg devices. However as part of the > block subsystem it might accept the SG_IO ioctl (if > it accepts SCSI commands and it is implemented). > Cciss is a block driver mostly outside of SCSI. It does interface into the SCSI system for tape drives. > > I tried lsscsi, however it would not print out the non-sg block devices. > > > > I have attached the output of tree /sys and the output of lsscsi and uname. > > One can search for cciss to find the devices and the driver. > > I still cannot see a relationship. > > <snip sysfs dump> > > > [0:0:0:0] storage COMPAQ MSA1000 4.32 - > > [0:0:0:3] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sda > > [0:0:0:4] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sdb > > [0:0:0:5] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sdc > > [0:0:0:6] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sdd > > [0:0:0:7] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sde > > [1:0:0:0] storage COMPAQ MSA1000 4.32 - > > [1:0:0:3] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sdf > > [1:0:0:4] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sdg > > [1:0:0:5] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sdh > > [1:0:0:6] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sdi > > [1:0:0:7] disk COMPAQ MSA1000 VOLUME 4.32 /dev/sdj > > Well this looks like output from lsscsi. And those devices look > like they could be associated with cciss, especially the > compaq "storage" devices. These devices should have corresponding > sg device nodes. Try "lsscsi -g". These are Fibre-Channel Storage arrays, probably going through a QLogic HBA. > > Still a bit unclear as hosts 0 and 1 are Fibre Channel > judging from the sysfs output for them. > > Doug Gilbert > > > - > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Andrew Patterson Hewlett-Packard Company - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
