On Wed, Jul 04, 2012 at 11:15:32AM +0200, Alain Spineux wrote: > Hi > > I'm trying to unregister disks to unload the bcache module and reuse > the disk for other tests. > > Can someone tell me how to unload module bcache after having run these command ? You'd use either unregister or stop (in the various bcache directories, depending on whether you just wanted to stop/unregister a backing device or cache set) and then you ought to be able to rmmod it. I should test that though, I wouldn't be surprised if something isn't completely working. > > Thanks. > > #first load module > # modprobe bcache > > I created a cache device on /dev/sdb1 > # ./make-bcache -C -b512k -w4k --writeback /dev/sdb1 > > and a backing device on /dev/sdz. > # ./make-bcache -B /dev/sdz > > # ./probe-bcache /dev/sdb1 > 5f42bdd1-4342-4ab6-8dda-855989a09604: UUID="" TYPE="bcache" > > # ./probe-bcache /dev/sdz > 6bbac9a4-afbd-4d40-9562-cdd290622c5d: UUID="" TYPE="bcache" > > > I then registered them by: > # echo /dev/sdb1 >/sys/fs/bcache/register > # echo /dev/sdz >/sys/fs/bcache/register > > I have /dev/bcache0. > /dev/bcache0 maps /dev/sdz except the first blocks > /dev/bcache0 is not yet cached by anything > > # ls /sys/fs/bcache/ > 887d3bb6-0161-4e54-b9d8-801de9f7df83 register register_quiet > > "887d3bb6-0161-4e54-b9d8-801de9f7df83" > is the id of the bcache "pool" composed by the only caching device /dev/sdb1 > > # now I attach /dev/sdz to this pool > echo "887d3bb6-0161-4e54-b9d8-801de9f7df83" > /sys/block/sdz/bcache/attach > > > > -- > Alain Spineux | aspineux gmail com > Monitor your iT & Backups | http://www.magikmon.com > Free Backup front-end | http://www.magikmon.com/mksbackup > Your email 100% available | http://www.emailgency.com > -- > 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
