Re: Best File System for partitions over 600GB
Roberto C. Sanchez wrote:
On Tue, Mar 13, 2007 at 11:59:18AM -0600, Mike McCarty wrote:
Roberto C. Sanchez wrote:
[snip]
FYI, *any* filesystem has the potential to lose data on a sudden power
outage.
Umm, no. I suppose you haven't worked in telecomm. I've supported
file systems which never, ever, lost anything. If the system call
came back, and said it was on disc, then it was. If power failed,
then any writes in progress might not get committed, but no data
scrambling could take place, even if the hardware scribbled on
the disc.
You can achieve the same thing with any decent filesystem. You just
have put the hardware into writethrough instead of writeback and you
also give up a lot of performance. It depends on what you need.
This is untrue. If power fails during a write, and the drive
scribbles on the disc in a spiral pattern as the head moves
toward the parking area, that particular disc is hosed.
What are you doing, making sweeping claims about every file system
in the world, when you cannot possibly know everything about
every file system?
Except that there are conditions under which just about every filesystem
will lose data. The amounts vary. The conditions vary. The results
vary. However, no filesystem is so good that it will handle every
single possible case.
This is untrue. I have myself supported file systems which
would not ever under any circumstance corrupt a disc. If the call
came back, and said that the data were on disc and not corrupt,
then that was so.
[snip]
A good FS should not suffer corruption regardless of what the
hardware does, if we're talking *quality*, that is.
I wouldn't say regardless. If the whole disk melts down, I would wager
that there is going to be some corruption.
Not true. Read what I wrote above. Even in the face of a complete
meltdown of a disc, the systems I'm talking about would not
lose data.
Mike
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