Am 26.08.2011 20:24, schrieb Gerardo Exequiel Pozzi: >> Those are kernel modules, not block devices. Depending on kernel >> configuration, they might be present or not. > Sure those are an abstraction of block devices that you have (real or > virtual). >> >> What I am looking for is a counter for the block device itself (LVM >> shows the "open count", I would hope that is not dm-specific). > Not per device, but for the whole abstraction: > > Again /sys/module/$blk/refcnt, but seems that needs an example to trust me:
No, they are not. They are modules, random pieces of code that you can load and unload. They are not an abstraction of anything.
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