On 12/5/14, 12:36 PM, Ryan Dunlop wrote: Yea I read this and was hoping they would import as ata devices.. but i can't see them atacontrol either. > aren't they xen block device naming? > > > Block Device Naming > > Xen hijacks the Linux block device major/minor numbering scheme and > stuffs it into the block devices available for the DomU's. So if you > use "sda1" for your Xen jail, The Linux Xen DomU block device driver > would hijack the major number from the scsi device driver and use it. > > FreeBSD/Xen used to simply create an "xbd" device with the raw device > number after it. This changed recently (thanks to dfr?) to somewhat > emulate what Linux was doing. From what I can tell, using hdX and > partitions (hdXa, hdXb, etc) will result in the relevant ATA devices > being created in the kernel (ad0s1, ad1s1, etc.) Simiarly for SCSI - > sdX became daX in FreeBSD. > > To get "xbd" (which I was using to make sure I had separately named > devices that absolutely didn't look like they should deserve a normal > DOS label) I need to use the major "202" (0xCA) with unit numbers > being minor >> 4. So 0xCA00 is xbd0, 0xCA10 is xbd1, 0xCA20 is xbd2, > etc. This gives me xbd0 -> xbd15 before I run out of "xbd" slices. > (Actually that isn't true but I won't assume I'll get any more. Those > who are interested should read > sys/dev/xen/blkfront/blkfront.c:blkfront_vdevice_to_unit() to see.) > > On Fri, Dec 5, 2014 at 12:24 PM, Linda Kateley <lkateley at kateley.com > <mailto:lkateley at kateley.com>> wrote: > > Hey, > > Does anyone happen to run freebsd on xen or use ec2? I just ran > into this weird thing that the disks come up as xbd, but not sure > what kind of disks they are? can't see them with camcontrol. > > linda > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org <mailto:tclug-list at mn-linux.org> > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20141205/f245d113/attachment.html>