[dm-devel] [Report] crash tool cannot resolve struct dm_table properly

[Eric Ren]

Hey!


On 04/13/2017 06:29 PM, Steffen Maier wrote:
> On 04/13/2017 12:22 PM, Steffen Maier wrote:
>> [...snip...]
>>
>> Does this help somewhat?:
>>
>> https://www.redhat.com/archives/dm-devel/2015-December/msg00042.html
Thanks, I didn't notice that thread. Yes, it will help!
>>
>> As workaround for eppic scripts in crash, we currently re-define struct
>> dm_table in eppic scripts, because "set scope dm_table_create" has not
>> always worked as we liked. Sometimes "whatis dm_table_create" and again
>> "set scope dm_table_create" worked and we put this in .crashrc, but
>> eventually gave up and kept our struct re-define.
>
> Before we wrote above posting, we tried this; maybe it helps in your 
> case:
>
> crash> set gdb on
> gdb: on
> gdb> ptype struct dm_table
> type = struct dm_table {
>     int undefined__;
> }
> gdb> ptype 'drivers/md/dm-table.c'::dm_table
> No symbol "dm_table" in specified context.
> gdb: gdb request failed: ptype 'drivers/md/dm-table.c'::dm_table
> gdb> ptype struct dm_table
> type = struct dm_table {
>     uint64_t features;
>     struct mapped_device *md;
>     unsigned int type;
> ...
>
Great! thanks for your sharing:-)

Regards,
Eric