ZFS to support chflags?

Oliver Fromme olli at lurza.secnetix.de
Thu Apr 12 12:38:40 UTC 2007

Ed Schouten wrote:
 > Bernd Walter wrote:
 > > E.g. hardlink system binaries over multiple jails flaged immuteable.
 > > No jail can compromise the data in other jails, while still allowing
 > > the kernel to share memory pages for it.
 > There are nicer ways to do that as far as I know. Just read-only
 > nullmount some kind of base install to another directory.

Memory pages are not shared across different mounts,
including nullmounts (AFAIK), which was Bernd's point.
So Bernd's solution is much better in terms of memory
usage, which is significant if you run a large number
of jails.

Best regards

Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M.
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