On Tue, 6 Jun 2006 14:55:50 -0700 (PDT) dean gaudet wrote: > On Tue, 6 Jun 2006, Jonas Smedegaard wrote: > > > It is wrong to assume a purely no-older-than-etch system: Imagine > > the process of upgrading from sarge to etch... > > aha... now i understand :) > > what you really need is some sort of weak dependency which implies > that if the package is already installed then it must be a specific > rev.
Correct. But such hinting would probably be too seldom needed to warrant the added complexity. > > Can someone come up with a test command that does not mess with > > actual devices, and returns true for versions of mdadm that > > properly supports "-Ac partitions"? Or even better, a complete > > patch for yaird? > > ok cool... > > well according to the mdadm changelog the -Ac partitions bug was fixed > in 1.10.0 ... so we'd want to stick something like this into > Templates.cfg > > !case "`mdadm --version 2>&1`" in > ! mdadm\ -\ v1.[1-9][^0-9]*) > ! mdadm --assemble <TMPL_VAR NAME=target> --uuid > <TMPL_VAR NAME=uuid> \ ! <TMPL_LOOP > NAME=components> <TMPL_VAR NAME=dev></TMPL_LOOP> ! ;; > ! *) > ! mdadm -Ac partitions <TMPL_VAR NAME=target> --uuid > <TMPL_VAR NAME=uuid> ! ;; > !esac > > hmm well i need to handle mdadm v0.x too i guess... i'm trying to > avoid added grep to the initrd. > > let me know if the above is generally what you're looking for -- an > alternative is to test the mdadm version at mkinitrd time but i > didn't see a way to do that without mucking in the perl (which i > don't mind doing either). Well, the above puts the test at boot time. That's ugly IMHO. I'd prefer resolving mdadm features at build time. Something like this: * Resolve mdadm capabilities in Plan.pm * Set some variable (not the version, but flags each capability) * Use TMPL_IF in mdadm template > i probably won't be able to test a patch for a week or two though. Just take your time :-) - Jonas -- * Jonas Smedegaard - idealist og Internet-arkitekt * Tlf.: +45 40843136 Website: http://dr.jones.dk/ - Enden er nær: http://www.shibumi.org/eoti.htm
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