Hi Greg, Sorry - guess I misunderstood. That is exactly what I did and I had /sys/fs/bcache immediately. Maybe double check in 'make menuconfig' that bcache support is actually enabled? (I think it's under block devices) I remember I had some troubles compiling at one point and had to disable one of the sub-entries under bcache in menuconfig. (cgroups I think it was) I was actually getting compile errors though so it is probably not this since your compile sounds like it went through. Maybe kern.log (or the boot log) might show a useful error somewhere. Sorry if that's no help - you might have to wait for Kent or someone with more experience to show up. Best of luck, James -----Original Message----- From: Greg Zapp [mailto:greg.zapp@xxxxxxxxx] Sent: 12 March 2013 01:53 To: James Sefton Subject: Re: Missing /sys/fs/bcache Hi James, Thank you for your response. I have actually checked out Kent's bcache-3.2 branch which includes the the entire kernel. I compiled that and booted it up. Cheers, Greg On Tue, Mar 12, 2013 at 2:42 PM, James Sefton <james@xxxxxxxxxxxx> wrote: > Hi Greg, > > I may well be wrong but I think bcache requires the patched kernel to run. I don't think it can simply be compiled as a loadable module. > > I have not used the latest versions so I could well be wrong here. > > If building a modules is supported now and you have compiled a module for bcache then maybe it is not loaded? > > Check the output of 'lsmod' for a bcache entry. > > If it is not listed then you can probably load the module with: > > insmod <module name> > > Like I said above tho, to my knowledge you have to patch the kernel. > > I am sure someone more knowledgeable will be around soon enough to > give you a proper answer. (They are usually pretty decent at > answering) > > Hope this helps a bit, > > James > > -----Original Message----- > From: linux-bcache-owner@xxxxxxxxxxxxxxx > [mailto:linux-bcache-owner@xxxxxxxxxxxxxxx] On Behalf Of Greg Zapp > Sent: 12 March 2013 01:36 > To: linux-bcache@xxxxxxxxxxxxxxx > Subject: Missing /sys/fs/bcache > > Hello All, > > I have decided to just test the bcache-3.2 branch for now without patching the Ubuntu Kernel. I've built and installed it successfully but for some reason /sys/fs/bcache is not present: > root@server:~# uname -a > Linux server.local 3.2.28+ #1 SMP Tue Mar 12 01:28:27 NZDT 2013 x86_64 > x86_64 x86_64 GNU/Linux > root@server:~# ls /sys/fs > cgroup ecryptfs ext4 fuse > > I'm sure I've done something wrong, would anybody be able to point me in the right direction? > > Thanks, > Greg > -- > To unsubscribe from this list: send the line "unsubscribe > linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
