On Thu, 5 May 2011, Karel Zak wrote:
> On Wed, May 04, 2011 at 11:16:05AM -0400, Martin K. Petersen wrote:
> > >>>>> "Lukas" == Lukas Czerner <lczerner@xxxxxxxxxx> writes:
> >
> > I got tired of poking around in sysfs to find the discard topology.
> > Here's a patch against lsblk that adds a -D option to present this
> > information in a human-readable form:
>
> Applied, thanks.
>
> > # lsblk -D
> > NAME DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO
> > sda 0 0B 0B 0
> > ââsda1 0 0B 0B 0
> > sdb 0 512B 2G 1
> > ââsdb1 0 512B 2G 1
>
> I have a question, 2.6.35 on my ThinkPad, non-SSD disk:
>
> NAME DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO
> sda 0 0B 0B 0
> ââsda1 4294935040 0B 0B 0
> ââsda2 4188038656 0B 0B 0
> ââsda3 1346205184 0B 0B 0
> ââsda4 3231165440 0B 0B 0
> ââsda5 4188006400 0B 0B 0
> â ââkzak-home (dm-0) 0 0B 0B 0
> ââsda6 2035725312 0B 0B 0
>
>
> Does is make sense? The DISC-ALN is non-zero but DISC-GRAN is zero.
>
> Note that cat /sys/block/sda/sda*/discard_alignment returns the same
> numbers.
>
> Karel
>
>
That is fixed by the kernel patch posted above :)
-Lukas
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel
