On 01/13/2011 03:11 PM, Tejun Heo wrote: > So, as a general rule, when in doubt, just create an attribute. Let's > refrain from custom symlinkery in sysfs, please. In this case too, a > holder attribute containing strings like ext[3|4], md, dm or whatnot > would have been _much_ simpler and actually more useful. Maybe, but this was not invented in DM/MD camp:-) Probably Kay or Greg can answer why it was done this way? For DM it just added links to be proper user of it, see http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=f165921df46a977e3561f1bd9f13a348441486d1 Anyway, it is /sys/block - so it represents block devices. If btrfs internally creates some virtual _block_ device for its pool, it should present it here too with slaves/holders. If not, why it should create any links there? Milan -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
