From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Kay Sievers" Subject: Re: [1/4] DST: Distributed storage documentation. Date: Mon, 10 Dec 2007 13:51:43 +0100 Message-ID: <3ae72650712100451h6a84d6cfs9b3a2954c13c4612@mail.gmail.com> References: <11972872493977@2ka.mipt.ru> <11972872501664@2ka.mipt.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: lkml , netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Greg KH" To: "Evgeniy Polyakov" Return-path: Received: from wa-out-1112.google.com ([209.85.146.182]:15782 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751577AbXLJMvo (ORCPT ); Mon, 10 Dec 2007 07:51:44 -0500 Received: by wa-out-1112.google.com with SMTP id v27so3335057wah for ; Mon, 10 Dec 2007 04:51:43 -0800 (PST) In-Reply-To: <11972872501664@2ka.mipt.ru> Content-Disposition: inline Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Dec 10, 2007 12:47 PM, Evgeniy Polyakov 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/$storage_name, It's always /sys/devices/. > +which contains following files: > + > +alg - contains name of the algorithm used to created given storage > +name - name of the storage > +nodes - map of the storage (list of nodes and their sizes and starts) > +remove_all_nodes - writable file which allows to remove all nodes from given > + storage > +n-$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? Kay