Messages in this thread | | | Date | Thu, 24 Jun 2004 18:58:40 +0300 | From | Oleg Drokin <> | Subject | Re: Strange NOTAIL inheritance behaviour in Reiserfs 3.6 |
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Hello!
On Thu, Jun 24, 2004 at 04:27:44PM +0200, Michael Kerrisk wrote: > > > > MK> # mount -t reiserfs /dev/hda12 /testfs > > Does it work as expected if you add "-o attrs" to the mount command? > Yes! Thanks. However, it is a little unfortunate that if one fails > to use this option, then: > 1. "chattr +t" (and I suppose underlying ioctl()s) can still be used to > set this attribute on a directory, without any error resulting. > It would be better if an error is reported.
Well, initial idea was to allow people to at least reset attributes in case of operationg with disabled attributes processing.
> 2. The attribute is then inherited by files created in that directory, > but has no effect.
Yes, attribute inheritance is working. The only part that is disabled by default is copying from fs-specific attribute storage to actual VFS inode attributes.
> 3. A later explicit "chattr + t" on the files themselves DOES result in > unpacking of the tails. Why?
There is a check in attributes setting code (and attributes setting/cleaning is enabled), that tests if NOTAIL attribute is set, that calls tails unpacking if so. Next time you write to that file it will be packed back (if possible).
I agree that all of this is not very intuitive, though.
Bye, Oleg - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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