diff options
| author | Andy Grover <agrover@redhat.com> | 2013-11-11 08:59:17 -0800 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-11-12 13:44:54 -0800 |
| commit | 7f7caf6aa74a4f4ad21ebe08bf23b594fce45ca7 (patch) | |
| tree | 058c55e859712486b9f6a8a20f3ea46add3a30eb /drivers/target/target_core_stat.c | |
| parent | f01b9f73392b48c6cda7c2c66594c73137c776da (diff) | |
target: Pass through I/O topology for block backstores
In addition to block size (already implemented), passing through
alignment offset, logical-to-phys block exponent, I/O granularity and
optimal I/O length will allow initiators to properly handle layout on
LUNs with 4K block sizes.
Tested with various weird values via scsi_debug module.
One thing to look at with this patch is the new block limits values --
instead of granularity 1 optimal 8192, Lio will now be returning whatever
the block device says, which may affect performance.
Signed-off-by: Andy Grover <agrover@redhat.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_stat.c')
0 files changed, 0 insertions, 0 deletions