ZFS to support chflags?

Eric Anderson anderson at freebsd.org
Thu Apr 12 17:30:59 UTC 2007

On 04/12/07 12:28, Kris Kennaway wrote:
> On Thu, Apr 12, 2007 at 11:42:37AM +0100, Robert Watson wrote:
>> 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).
> Yeah, historical intentions notwithstanding, the real benefit of schg
> flags on critical pieces is anti foot-shooting.  e.g. you really don't
> want to accidentally delete ld-elf.so.1 or libc.so.7 or init.
> You can usually recover from this, but it can mess up your whole day
> :)
> Kris

Yea, all I have to say is: thank you to <SOMEBODY> for /rescue!!!


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