[DRBD-user] Re: Oops after upgrading kernel

Eugene Crosser crosser at rol.ru
Mon Jan 24 15:45:19 CET 2005

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Helmut Wollmersdorfer wrote:
> Lars Marowsky-Bree wrote:
> 
>> Ah damn, so drbd is also affected by this. This is a recent semantic
>> change in the bio handling which is also present in 2.6.10-ac10 and up.
> 
> 
>> The cause is probably in drbd_actlog.c:_drbd_md_sync_page_io(), where a
>> bio is allocated on the stack and then initialized via bio_init(),
>> instead of being allocated as a struct bio * via bio_alloc().
> 
> 
> Hmm ... I wanted to upgrade from Kernel 2.6.8 to 2.6.10 because of the 
> 30% performance downgrade of my IDE/UDMA HDDs since upgrade from Kernel 
> 2.4. Does this mean, that I should wait?

I've put a reasonably loaded system (.5 Mb/sec read, 2+ Mb/sec write) 
based on kernel 2.6.10 (kernel.org) and drbd 0.7.6 in production four 
days ago.  So far, so good (knocking the wood)...

Eugene
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