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From: Terry Lambert <terry@lambert.org>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Recovering files from FreeBSD
Date: 14 Feb 1996 01:59:37 GMT
Organization: Utah Valley State College, Orem, Utah
Lines: 37
Message-ID: <4frfm9$19t@park.uvsc.edu>
References: <3119D156.387E@host.bemarnet.es> <4foobe$a4j@park.uvsc.edu> <4fq0l4$10v@agate.berkeley.edu>
NNTP-Posting-Host: hecate.artisoft.com
nickkral@parker.EECS.Berkeley.EDU (Nick Kralevich) wrote:
]
] In article <4foobe$a4j@park.uvsc.edu>,
] Terry Lambert <terry@lambert.org> wrote:
] >It is possible to implement this type of thing at the FS level,
] >but doing so would require a "purge" facility, and probably an
] >"auto-purge" mechanism for auto-recovery of disk space (LRU
] >based).
]
] Linux EXT2 supports undelete, both in the filesystem
] and using a tool called midnight commander.
What does it do for a file system containing nothing by deleted
files?
It needs either a "purge" facility or an "auto-purge" facility,
or both.
Or it will report "no free space".
The recoverability in Linux via an external tool os related to
the use of extents.
None of this contradicts my statement of the issues involved in
implementing a recovery facility. Those issues dictate tradeoffs
that were made in Ext2fs but not in UFS to achieve the capability.
The "rm replacement" style utilities don't require a trade-off.
Terry Lambert
terry@cs.weber.edu
---
Any opinions in this posting are my own and not those of my present
or previous employers.