Re: Does XFS prevent disk spindown?

[Thor Kristoffersen <thorkr@xxxxxxxxx>]

David Chinner <dgc@xxxxxxx> writes:
>> > What does 'xfs_logprint -t' show in these "idle" states
>> > after these writes?
>> 
>> xfs_logprint produces output like the one shown below, so it does indeed
>> look like it's writing to the journal.  But why should it need to keep
>> writing to the journal when there have been no updates to any files on that
>> partition recently?
>
> Are you using lazy-count=1? (i.e. output of 'xfs_info <mtpt>', please).

Looks like I am:

meta-data=/dev/sda3              isize=256    agcount=4, agsize=42676171 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=170704681, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096  
log      =internal               bsize=4096   blocks=32768, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

Is that what's causing it?  I have never specified any lazy-count option
when I created or mounted the filesystem.  I didn't even know it existed.


Thor