On Wed, Jan 15, 2014 at 09:54:02AM -0600, Eric Sandeen wrote: > On 1/15/14, 12:37 AM, Dave Chinner wrote: > > On Tue, Jan 14, 2014 at 09:30:57PM -0800, Zachary Kotlarek wrote: > >> > >> On Jan 14, 2014, at 7:48 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote: > >> > >>> It's called *ASCII* Case Insensitivity for a reason: it doesn't > >>> support anything other than ASCII. So your usage is not actually > >>> supported at all, hence it's no surprise that it has caused > >>> breakage. > >> > >> Okay. Thanks for the explanation. > >> > >> FWIW, I read “ASCII-only case-insensitive” to mean “only case-insensitive for ASCII” as in ñ and Ñ would not match each other. If it actually means “anything other than ASCII is subject to complete breakage” a more nuanced explanation in the man page might be desirable. > > > > Sure. Can you write a patch to add explanation that explain the > > problem you've had? > > > >> I don’t suppose there’s any way to disable that setting short of creating a new file system? > > > > Not officially. Changing it means you have to change every single > > hash for every directory entry. I *think* that you could probably do > > it with a bit of xfs_db magic and and xfs_repair pass. > > > > First, A warning, some advice and a disclaimer: back up anything you > > don't want to lose, because if this screws up it'll trash the > > directory structure and you may *LOSE* *ALL* *YOUR* *DATA*. This is > > dangerous, not recommended and I take no responsibility for what > > happens if you try it and it fails. > > > > After taking a backup, use xfs_metadump to set up for a > > non-destructive trial run. take a copy of the filesystem metadata > > using xfs_metadump: > > > > # xfs_metadump <dev> scratch.metadump > > NB: You'll want to add the "-o" option to not obfuscate filenames, or > you'll probably have no idea if Dave's later steps are working or not. > > > (I haven't read the whole thread, but is there no way for ascii-ci mode > to reject non-ascii names in the first place? This seems like quite > the pitfall.) The utf-8 patches add a "is this valid utf-8" check to all the operations that care. We could probably do that for the ASCII-CI stuff if you can define what ASCII means.... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
