From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sf10.coceve.com (sf10.coceve.com [208.96.6.155]) by sandeen.net (Postfix) with ESMTP id 0A8771807F9D3 for ; Fri, 20 Jul 2007 11:58:56 -0500 (CDT) Received: from dev.pbwiki.com (sf6 [208.96.6.149]) by sf10.coceve.com (Postfix) with ESMTP id 2C51312A1B0E for ; Fri, 20 Jul 2007 16:58:55 +0000 (GMT) Date: Fri, 20 Jul 2007 16:58:55 +0000 From: PBwiki Changebot Subject: [PBwiki] linuxfs: EasyFsProjects edited Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="b1_cdc9c504ca96a4c88fba1edfec0eb231" To: sandeen-linuxfs@sandeen.net List-ID: --b1_cdc9c504ca96a4c88fba1edfec0eb231 Content-Type: text/plain; charset = "utf-8" Content-Transfer-Encoding: 8bit Linuxfs.pbwiki.com was just edited. Here's what was changed: someone unknown changed the page 'EasyFsProjects'. View the current version of EasyFsProjects at http://linuxfs.pbwiki.com/EasyFsProjects See a full list of changes at http://linuxfs.pbwiki.com/changes.php ------ Start your own PBwiki at http://pbwiki.com/ Change notification preferences at http://linuxfs.pbwiki.com/notification.php, unsubscribe completely with http://linuxfs.pbwiki.com/notification.php?verify=197c0&unsub=sandeen-linuxfs@sandeen.net New! -- Get better control over your notifications and wiki experience. Sign up for a PBwiki identity. It's easy and free! Start at http://linuxfs.pbwiki.com/notification.php --b1_cdc9c504ca96a4c88fba1edfec0eb231 Content-Type: text/html; charset = "utf-8" Content-Transfer-Encoding: 8bit

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A generically useful library for finding and managing contiguous areas of disk space. Getting the interface right is non-trivial, but there are a lot of concepts which are independent of on-disk file system layout which could be reused. Good starting points are the ext3 reservation code and/or the XFS extent allocation code (the ext2 preallocation code is NOT a good place to start). Short of that, finish and test the port of the ext3 reservation code to ext2, started here: http://infohost.nmt.edu/~val/patches/resv_only_patch Contact: valh
Some kind of hook into the disk EIO reporting which allows file systems to register a handler which does things like set the "fsck me now" bit. Contact: valh
Simple block bitmap sanity checking for ext2/3/4. When a new block bitmap is read from disk in read_block_bitmap() there are a few bits that should ALWAYS be set for each group. In particular, the blocks given by desc->bg_block_bitmap, desc->bg_inode_bitmap, and {desc->bg_inode_table, +sbi->s_itb_per_group}. If any of those those bits (shifted to be relative to the current group, of course) are not set then the on-disk group descriptor is corrupt, or there is some problem reading it from disk and an ext3_error() should be called (possibly making the filesystem read-only).
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