El jue, 10-08-2006 a las 08:38 -0400, William Hooper escribió: > J.J. Garcia wrote: > > Hi folks, > > > > > > Im trying to get a multi-card reader on centos (SD, MMC, and so, 4 card > > slots) and i have read (http://www.cs.sfu.ca/~ggbaker/personal/cf-linux) > > that CONFIG_SCSI_MULTI_LUN should be enabled on kernel (=Y) but current > > 34.0.2 doesn't have it enabled by default, is there any particular > > reason to not be enabled? > > IIRC scanning LUNs freaks out some (real) SCSI hardware. IIRC for Fedora > they are creating a whitelist so that known OK devices are scanned. > According to following link dated at November 98 i get this idea, don't know if anybody has last news ... this is why i raised the question http://www.uwsg.iu.edu/hypermail/linux/kernel/9811.3/0378.html "When enabling both CONFIG_SCSI_MULTI_LUN and ide-scsi emulation, the ATAPI devices will usually respond to every LUN. This can lead to an (as yet untraced) oops." And also in http://www.redhat.com/archives/rhl-beta-list/2004- May/msg00235.html Mentionning http://www.linuxjournal.com/article/6687 And http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=37935 I had no more time to check the actual patchlevel status in our kernel, feel free to do it. > > By the other hand i've also tweak the /etc/grub.conf file to boot the > > kernel with max_luns=32 and results are the same, only scsc lun=0 is > > recognized. > > > > At the same time using the workaround mentioned in the link pasted b4 > > regarding to modify the /etc/modules.conf to include 'options scsi_mod > > max_scsi_luns=8' gives the same results, no detection at all for the card > > slots. > > Shouldn't that be max_luns=8, not max_scsi_luns=8 ? > > I have no idea about it, if you follow the google links you will have options for anybody in anyway, at least what i have found about it: http://www.redhat.com/archives/rhl-beta-list/2004-May/msg00238.html And also the main link i posted from Greg Baker: http://www.cs.sfu.ca/~ggbaker/personal/cf-linux If you have a better approach to do it, feel free to post it, this mail was only my way to start up ideas with a single quick'n'dirty workaround for me in this case ... TIA Jose.