[dm-devel] Should enhanced bio error state be propagated upwards to parent o f failed cloned bios?
Lars Marowsky-Bree
lmb at suse.de
Tue Apr 26 09:57:16 UTC 2005
On 2005-04-25T11:34:32, "goggin, edward" <egoggin at emc.com> wrote:
> Should the bi_error field of a failed bio clone completion be propagated
> upwards into the parent of the cloned bio, possibly in dec_pending() of
> dm.c? Doing so will allow target drivers higher than the one managing
> the bottom-most mapped device to have access to enhanced bio sense
> and error information. Otherwise, all they see is -EIO like now.
Probably yes. Good point.
Right now only dm-mpath knows about them of course, and we're very
likely to be the lowest mapped device in the stack. But propagating the
error upward might make sense.
Sincerely,
Lars Marowsky-Brée <lmb at suse.de>
--
High Availability & Clustering
SUSE Labs, Research and Development
SUSE LINUX Products GmbH - A Novell Business
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