Johan,
This is what is happening...
1. You rebooted
2. The raid volume is started, and since it isn't clean (bad shutdown)
it starts resyncing at the default 1024 byte buffer size
3. Your filesystem is mounted, and it seems to be using 4096 byte blocks.
This changes the buffer block sizes to 4096.
4. The resync process was in the middle of doing 1024 byte transfers
when the block size was changed, thus, you get all the error messages
as noted.
6. The resync process notices the block size change and re-issues
the request.
7. Eventually the 1K buffers get too old and are reclaimed for something
else (I think).
This is not a problem, just a bunch of messages.
<>< Lance.
> After crashes I see a lot of these messages (RAID5):
>
> www3 kernel: ll_rw_block: device 09:00: only 4096-char blocks implemented
> (1024)
> www3 last message repeated 226 times
> www3 kernel: md0: blocksize changed during write
>
> What do they actually mean?
> The first one (only 4096-char blocks implemented)
> totally fills my dmesg output.
>
> /Johan Ekenberg
>
>
