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SubjectRe: Amanda VFAT Incremental Backups Broken in linux-2.2.1[12]
In <9e86d1b443edfd13@home-box.demon.co.uk> Robert de Bath (rd103983@home-box.demon.co.uk) wrote:
> DONT BACKUP VFAT INCREMENTALLY

> There is only one date on a file on a VFAT partition and as every command
> down to the DOS copy command preserves that date you cannot see what's
> been changed.

This is WRONG. VFAT (but NOT plain old MS-DOS FAT !!!) has three times as it
should be: Modification time (this is old good MS-DOS "modification time";
preserved by copy), Creation time (not preserved by copy) and "Last access
time" (date actual -- time is not stored; not preserved by copy). At least it
is on disk -- I'm not sure if Linux's VFAT driver supports them...

> Hopefully the ctime is being set to now (or now-1); this is the
> _right_ thing to do.

Why so ? Why not use existing three times ? Even if "Last access time" is not
time but date...

> There is a good feature of VFAT (I _DONT_ believe it !!! a GOOD feature in
> VFAT!!!!!!!) in the archive bit. This would provide reliable incrememtal
> backups ... but it can't be mapped onto Unix semantics.




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