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Message-ID: <20150615040542.GE15793@thunk.org> Date: Mon, 15 Jun 2015 00:05:42 -0400 From: Theodore Ts'o <tytso@....edu> To: Andreas Dilger <adilger@...ger.ca> Cc: Richard Yao <ryao@...too.org>, linux-ext4@...r.kernel.org, Richard Yao <richard.yao@...sterhq.com> Subject: Re: [PATCH] e2fsprogs: misc: Remove broken whole device check On Mon, Jun 01, 2015 at 04:56:45PM -0600, Andreas Dilger wrote: > On Jun 1, 2015, at 4:39 PM, Richard Yao <ryao@...too.org> wrote: > > > > From: Richard Yao <richard.yao@...sterhq.com> > > > > Modern Linux major/minor numbering on block devices no longer conform to > > the divisible by 64 rule for minor numbering. On my development system, > > the correct number is 16. Consequently, this applies only to every 4th > > drive on a modern system, which is inconsistent. That caused the > > following bug to be filed against Flocker: > > > > https://clusterhq.atlassian.net/browse/FLOC-2041 > > > > We could unconditionally pass -F to override this check whenever it > > triggers, but that it would also override the libblkid check that > > determines whether there are existing partitions, logical volumes or > > filesystems on the disk, which seems unwise. > > > > I propose that this check be removed because passing a whole disk to > > mke2fs is a valid use case and given how long this has been broken, > > users are already accustomed to the behavior where -F is not necessary > > to format a whole disk as ext4. > > I totally agree - we've been overriding this check for years, and > I'm glad to see it go. We have other mechanisms today to avoid > users accidentally formatting the wrong device (O_EXCL, check for > existing filesystems in interactive mode, etc.) > > Reviewed-by: Andreas Dilger <adilger@...ger.ca> Thanks, applied. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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