On Mon, Dec 10, 2007 at 01:51:43PM +0100, Kay Sievers (kay.sievers@xxxxxxxx) wrote: > On Dec 10, 2007 12:47 PM, Evgeniy Polyakov <johnpol@xxxxxxxxxxx> wrote: > > diff --git a/Documentation/dst/sysfs.txt b/Documentation/dst/sysfs.txt > > new file mode 100644 > > index 0000000..79d79dc > > --- /dev/null > > +++ b/Documentation/dst/sysfs.txt > > @@ -0,0 +1,30 @@ > > +This file describes sysfs files created for each storage. > > + > > +1. Per-storage files. > > +Each storage has its own dir /sysfs/devices/$storage_name, > > It's always /sys/devices/. I meant that for each new device, it will be placed into /sys/devices/its_name, but it can also be accessed via /sys/bus/dst/devices/ > > +which contains following files: > > + > > +alg - contains name of the algorithm used to created given storage > > +name - name of the storage > > +nodes - map of the storage (list of nodes and their sizes and starts) > > +remove_all_nodes - writable file which allows to remove all nodes from given > > + storage > > +n-$start-$cookie - per node directory, where > > + $start - start of the given node in sectors, > > + $cookie - unique node's id used by DST > > + > > +2. Per-node files. > > +Node's files are located in /sysfs/devices/$storage_name/n-$start-$cookie > > +directory, described above. > > To which class or bus do the devices you create belong? Care to show a > "tree" or "ls -la" of the device? It is 'dst' bus. uganda:~/codes# ls -la /sys/devices/staorge/ total 0 drwxr-xr-x 4 root root 0 2007-12-10 11:46 . drwxr-xr-x 9 root root 0 2007-12-10 11:46 .. -r--r--r-- 1 root root 4096 2007-12-10 11:46 alg lrwxrwxrwx 1 root root 0 2007-12-10 11:46 bus -> ../../bus/dst drwxr-xr-x 3 root root 0 2007-12-10 11:46 n-0-ffff81003e24117 -r--r--r-- 1 root root 4096 2007-12-10 11:46 name -r--r--r-- 1 root root 4096 2007-12-10 11:46 nodes drwxr-xr-x 2 root root 0 2007-12-10 11:46 power -rw-r--r-- 1 root root 4096 2007-12-10 11:46 remove_all_nodes lrwxrwxrwx 1 root root 0 2007-12-10 11:46 subsystem -> ../../bus/dst -rw-r--r-- 1 root root 4096 2007-12-10 11:46 uevent uganda:~/codes# ls -l /sys/bus/dst/ total 0 drwxr-xr-x 2 root root 0 2007-12-10 09:52 devices drwxr-xr-x 2 root root 0 2007-12-10 09:52 drivers -rw-r--r-- 1 root root 4096 2007-12-10 11:46 drivers_autoprobe --w------- 1 root root 4096 2007-12-10 11:46 drivers_probe > Kay -- Evgeniy Polyakov - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
