Alex Tomas wrote:
JG> "ext3" will become more and more meaningless. It could mean _any_ of
JG> several filesystem metadata variants, and the admin will have no clue
JG> which variant they are talking to until they try to mount the blkdev
JG> (and possibly fail the mount).
debugfs <dev> -R stats | grep features ?
The question is, do you
a) expect users to run this magic command, and DTRT or
b) watch users boot w/ extents, accidentally do something silly like
writing data to a file, and become locked into a new subset of kernels?
The simple act of writing data to a file has become an _irrevocable
filesystem upgrade event_.
Jeff
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