Re: FAT32 superiority over ext2 :-)

[Juri Haberland <juri@koschikode.com>]

In article <0106250203070J.00430@starship> you wrote:
> On Monday 25 June 2001 01:49, Albert D. Cahalan wrote:
>> Daniel Phillips writes:
>> > On Monday 25 June 2001 00:54, Albert D. Cahalan wrote:
>> >> By dumb luck (?), FAT32 is compatible with the phase-tree algorithm
>> >> as seen in Tux2. This means it offers full data integrity.
>> >> Yep, it whips your typical journalling filesystem. Look at what
>> >> we have in the superblock (boot sector):
>> >>
>> >>     __u32  fat32_length;  /* sectors/FAT */
>> >>     __u16  flags;         /* bit 8: fat mirroring, low 4: active fat */
>> >>     __u8   version[2];    /* major, minor filesystem version */
>> >>     __u32  root_cluster;  /* first cluster in root directory */
>> >>     __u16  info_sector;   /* filesystem info sector */
>> >>
>> >> All in one atomic write, one can...
>> >>
>> >> 1. change the active FAT
>> >> 2. change the root directory
>> >> 3. change the free space count
>> >>
>> >> That's enough to atomically move from one phase to the next.
>> >> You create new directories in the free space, and make FAT
>> >> changes to an inactive FAT copy. Then you write the superblock
>> >> to atomically transition to the next phase.

[--snip--]

> When can we expect the patch?

Don't! Blasphemy!!!

Juri ;-) 

-- 
Juri Haberland  <juri@koschikode.com>