[dm-devel] dm-rdac not working?
Tore Anderson
tore at linpro.no
Tue Aug 28 06:28:41 UTC 2007
* Chandra Seetharaman
> In RDAC mode, tur will always fail on the passive path. You do not see
> that ?
No, TUR works completely fine on the passive paths. Only thing that
distinguishes a passive path from an active one is that all actual I/O
fails. All "meta"-I/O, like TEST UNIT READY, INQUIRY, READ CAPACITY,
and so on, works fine.
> You mean mpath_prio_tpc from 0.4.7 ? I use it all the time in both RDAC
> and AVT mode with no issues.
It works fine, it just prints an error message to stderr "Auto-volume
Transfer not enabled", which kind of messed up the output from
multipath -ll. So there's just cosmetic reasons for using
mpath_prio_rdac over mpath_prio_tpc.
root at atalanta:~# /sbin/mpath_prio_tpc /dev/sdg
Auto-volume Transfer not enabled6
root at atalanta:~# /usr/local/sbin/mpath_prio_rdac /dev/sdg
3
> oops :)... attached
Since my problem is fixed by the patch pointed to by Brian De Wolf I
assume you're no longer interested in this debug. Tell me if you are.
Thanks for your help!
Regards
--
Tore Anderson
More information about the dm-devel
mailing list