I just wanted this to be somewhere , seems it s not worst a place than any other.
With ext3 you cannot undelete a file . That s right. But only if it was delete
in a proper way, for example with rm .
In case of a power failure, at reboot if the filesystem is badly broken and some
file are lost during the filesystem recovery (fsck), before mounting the
partition one can "undelete" the file deleted by fsck with the usual ext2
PS: Ext3 as it syncs data and metadata to disk every two seconds, thus benign
powerfailure does not hurt it badly.
That explains why its slower than other journalized fs which by default only
sync metadata at this rate.