Kern Sibbald wrote:
> You should read what Linus has to say about dump! I don't remember his
> exact words but something to the effect that "yes, it seems to work, but if
> you really understood kernel caching, you would realize that it cannot work
> and that one day you will get burned." That's paraphrased. By the way,
> aside
It sounds like you're talking about this quote from Linus, regarding the fact
that dump works by reading the underlying device rather than going through the
filesystem API of the kernel:
>> Note that dump simply won't work reliably at all even in 2.4.x: the
>> buffer cache and the page cache (where all the actual data is) are not
>> coherent. This is only going to get even worse in 2.5.x, when the
>> directories are moved into the page cache as well.
>>
>> So anybody who depends on "dump" getting backups right is already playing
>> Russian roulette with their backups. It's not at all guaranteed to get
>> the right results - you may end up having stale data in the buffer cache
>> that ends up being "backed up".
>>
>> Dump was a stupid program in the first place. Leave it behind.
> from tar, dump is the major component of Amanda :-) I wonder when the
> Zmanda VCs will realize that they spent $13 million for dump technology
> that Linus says is destined to break :-) amusing (at least to me).
More fodder for a Bacula vs other programs page... =)
--
Frank Sweetser fs at wpi.edu | For every problem, there is a solution that
WPI Network Engineer | is simple, elegant, and wrong. - HL Mencken
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