H. Peter Anvin wrote:
Bill Davidsen wrote:
DC> Easily doable in userspace, why bother with kernel programming
In userspace you can't automatically delete the files when the space
becomes needed. The LD_PRELOAD/glibc methods also have the
disadvantage of having to figure out where a file goes when it's
deleted, depending on which device it happens to reside on. Demanding
read access to /proc/mounts just to do rm could cause problems.
Userspace has had 10 years to invent a good solution. If it was so
easy, it would probably have been done.
Actually, if it were so important it WOULD have been done. I suspect
that the issue is not lack of a good solution, but lack of a good
problem. The behavior you propose requires a lot of kernel
cleverness, including make the inodes seem to go away, so the count
is "right" for what the user sees.
The real solution for it is snapshots.
Peter,
Explain what you are thinking here. What I proposed, I have already
implemented in NetWare, it's very easy to do. Snapshotting is not
complex for FS's but does require a lot of space for meta-data to manage
it. EXT is not architecteced for something this complex. A simple
hidden mv is much easier to do.
Jeff
-hpa
-
To unsubscribe from this list: send the line "unsubscribe
linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
