Date: Thu, 12 Apr 2007 11:42:37 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: ticso@cicely.de Cc: John Nielsen <lists@jnielsen.net>, current@freebsd.org Subject: Re: ZFS to support chflags? Message-ID: <20070412114135.C64803@fledge.watson.org> In-Reply-To: <20070412021645.GQ30772@cicely12.cicely.de> References: <200704112004.03903.lists@jnielsen.net> <20070412021645.GQ30772@cicely12.cicely.de>
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On Thu, 12 Apr 2007, Bernd Walter wrote: > On Wed, Apr 11, 2007 at 08:04:03PM -0400, John Nielsen wrote: > >> I just moved /usr over to a zpool on my -CURRENT system. Performance and >> stability are both excellent so far. (Thanks Pawel!) However I noticed that >> setting FS flags on files with chflags is not supported. Would it be >> feasible to add support for flags on ZFS, and if so are there plans to do >> so? >> >> If not (and/or in the meantime), are there any places in the base system >> where flags are required for normal operation? (/var maybe?) > > Some binaries have such flags set, but it is not required, otherwise > diskless NFS wouldn't work. I often see installworld warnings about beeing > unable to set extended flags on ld.so and others on my diskless boxes. I'm not a big fan of setting these flags -- I fairly frequently run into problems when I installworld an NFS root on the NFS host, then try to work with it over NFS from the NFS-booted system, as the flags can't be removed via NFS. They don't offer a security benefit as-installed, and perhaps offer a benefit with respect to preventing people from shooting themselves in the foot (or perhaps not). Robert N M Watson Computer Laboratory University of Cambridge
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