On Thu, 30 Dec 2010 17:33:17 +0200 Alexander Nezhinsky <alexandern@xxxxxxxxxxxx> wrote: > Added support for user-defined block size. > > The rationale is for using with devices (notably SSDs) that allow > formatting with sector size different from 512B. If such device > is formatted to a greater value, but tgt reports its sector size > to be 512B, all commands referencing device sectors and/or extents > will address wrong locations, some of which will be even out of > the device's capacity. > > This patch follows the patch posted here: > http://lists.wpkg.org/pipermail/stgt/2009-December/003469.html > and elaborates the suggested functionality a bit further. > > The default block size is maintained by sbc (block devices). > It is set to 512B. After this all block devices will report > the passed block sz value during scsi inquiries. > > Block size can be set for individual luns as well using > --params blocksize=4096,... > among the parameters of new logical unit through tgtadm. > > This may be used in scripts as follows: > --params blocksize=`blockdev --getss /dev/sdd` > In this case lun specific setting overrides sbc default. > > Tha actual per lun is displayed through -m target -o show. > > Signed-off-by: Alexander Nezhinsky <alexandern@xxxxxxxxxxxx> > --- > usr/sbc.c | 25 +++++++++++++++++-------- > usr/target.c | 35 +++++++++++++++++++++++++++++++---- > usr/tgtd.h | 1 + > usr/util.c | 19 +++++++++++++++++++ > usr/util.h | 1 + > 5 files changed, 69 insertions(+), 12 deletions(-) Thanks, merged. -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
