On Wed, 2009-09-16 at 19:59 -0700, Eddie wrote: > > > >> How much memory does your system have? > >> > >> Best guess in the 64 bit case is that the physical memory the kernel is > >> doing DMA to isn't within the range of the card. You might be able to > >> test this by booting with the max_addr=4G parameter in the 64 bit case. > >> > >> If it is, we'll have to get the DMA mask for this thing set up > >> correctly. > >> > >> James > >> > > > > James, > > > > It's got 8Gig. > > > > I'll try your suggestion tonight, when I get home. > > > > Cheers, > > Eddie > > > OK, adding addappend = " max_addr=4G" to my lilo.conf made no > difference. It still booted with all 8G. :( > > But, changing it to addappend = " mem=4G" seemed to do the trick. > > And, your guess might be correct. I now see the correct messages for > the MegaRAID: > > scsi 4:4:0:0: Direct-Access MegaRAID LD 0 RAID5 1430G N661 PQ: 0 ANSI: 2 > sd 4:4:0:0: [sda] 2930307072 512-byte hardware sectors: (1.50 TB/1.36 TiB) > sd 4:4:0:0: [sda] Write Protect is off > sd 4:4:0:0: [sda] Mode Sense: 00 00 00 00 > sd 4:4:0:0: [sda] Asking for cache data failed > sd 4:4:0:0: [sda] Assuming drive cache: write through > sd 4:4:0:0: [sda] 2930307072 512-byte hardware sectors: (1.50 TB/1.36 TiB) > sd 4:4:0:0: [sda] Write Protect is off > sd 4:4:0:0: [sda] Mode Sense: 00 00 00 00 > sd 4:4:0:0: [sda] Asking for cache data failed > sd 4:4:0:0: [sda] Assuming drive cache: write through > sda: sda1 > sd 4:4:0:0: [sda] Attached SCSI disk > sd 4:4:0:0: Attached scsi generic sg1 type 0 Hmm, so the driver looks to do this correctly. By default it sets a 32 bit DMA mask but it raises it to 64 bits for certain boards which can support that (based on the PCI ids). Can you do an lspci -n -v and send the output? That will tell me whether the board got a 64 bit mask. Thanks, James -- 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
