On Thu, Dec 01, 2005 at 06:50:56PM +0100, Lars Hallberg wrote:
> Xavier Montagutelli wrote:
>
> >On Wednesday 30 November 2005 18:51, Lars Hallberg wrote:
> >
> >
> >>Don't know howe much difference this make, but I using Ubuntu 5.10
> >>and the debian tools. Built my original 'guest' with somthing like:
> >>
> >># newvserver -v --hostname testname --domain "foo.bar" --ip
> >>IPADDRESS
> >This tool is not in the "util-vserver" commands. Perhaps that's why
> >you don't have any "/vservers/.pkg/<vs>" directory ?
>
> /etc/vservers/foo/apps/pkgmgmt/ contans only the empty file
> 'internal', and what i understand packetmanagment is complitle run
> inside the VServer. Waste some space, but its not a critikal problem,
> and defeitly not on top of the list right now :-)
>
> Thanks for all answers. I'm wondering about one more thing
> >>>4) modify context number automatically (if you use static context
> >>>numbers, which is preferred) ?
> >>>
> >>Don't think I do, possably I shuld... Wher can I read about pro and
> >>con?
> >
> >Mandatory if you use context tagging for files, needed to set up
> >disk limit per vserver or quota per vserver (in case you are using a
> >single partition for hosting different vservers), otherwise simply
> >recommended ?
> >
> I don't realy need those featurs right now. But I wonder what "context
> tagging for files" implie for file copying.
> Are ther any tool for changing the taging?
yes, lsxid and chxid are supposed to do that job
$ touch /vservers/{a,b,c}
$ lsxid /vservers/{a,b,c}
0 /vservers/a
0 /vservers/b
0 /vservers/c
$ chxid -c 100 /vservers/a
$ chxid -c 200 /vservers/b
$ lsxid /vservers/{a,b,c}
100 /vservers/a
200 /vservers/b
0 /vservers/c
> Will that taging survive copying? by cp? by rsync?
$ mkdir /vservers/X
$ cp -a /vservers/{a,b,c} /vservers/X/
$ lsxid /vservers/X/
0 /vservers/X/
0 /vservers/X/a
0 /vservers/X/b
0 /vservers/X/c
> Do they survive taring and untaring?
$ mkdir /vservers/Y
$ tar cfC - /vservers a b c | tar xfC - /vservers/Y
$ lsxid /vservers/Y/
0 /vservers/Y/
0 /vservers/Y/a
0 /vservers/Y/b
0 /vservers/Y/c
> Will they survive copying betwin host systems (migrating, backup)?
depends ...
inode based backup tools will preserve the
tagging (like dump/restore), other tools
(like rsync or tar) have to be 'enhanced'
to know about the xid tags.
similar is true for barrier and immutable
link inversion flags ...
> I do the copying on the host system, outside the VServers own context.
>
> Guess I realy wonder wher i can read more (allot more) about this.
some info should be on the wiki, if you need details
pay a visit to the irc channel and ask me ...
HTH,
Herbert
> Thanks /LaH
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