Date: Thu, 12 Apr 2007 15:55:24 +0300 From: Kostik Belousov <kostikbel@gmail.com> To: freebsd-current@freebsd.org, ed@fxq.nl, ticso@cicely12.cicely.de Subject: Re: ZFS to support chflags? Message-ID: <20070412125524.GZ308@deviant.kiev.zoral.com.ua> In-Reply-To: <200704121238.l3CCcX9v070904@lurza.secnetix.de> References: <20070412120341.GE45949@hoeg.nl> <200704121238.l3CCcX9v070904@lurza.secnetix.de>
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--O2g7+miYGsIKoR9l Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Apr 12, 2007 at 02:38:33PM +0200, Oliver Fromme wrote: > 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. > >=20 > > There are nicer ways to do that as far as I know. Just read-only > > nullmount some kind of base install to another directory. >=20 > 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. Pages are shared for file mmaped from different null mounts. --O2g7+miYGsIKoR9l Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGHiw7C3+MBN1Mb4gRAgYlAKDWL3q9DS0H0R5Jcze9YB5sEYL3LACgm18F yi+fDpyOB845bLs+mbx/TUU= =FGQZ -----END PGP SIGNATURE----- --O2g7+miYGsIKoR9l--
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