| Date | Thu, 11 Apr 2013 16:25:51 -0400 | From | Steven Rostedt <> | Subject | [ 048/171 ] target/file: Bump FD_MAX_SECTORS to 2048 to handle 1M sized I/Os |
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3.6.11.2 stable review patch. If anyone has any objections, please let me know.
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From: Nicholas Bellinger <nab@linux-iscsi.org>
[ Upstream commit f002a24388cc460c8a9be7d446a9871f7c9d52b6 ]
This patch bumps the default FILEIO backend FD_MAX_SECTORS value from 1024 -> 2048 in order to allow block_size=512 to handle 1M sized I/Os.
The current default rejects I/Os larger than 512K in sbc_parse_cdb():
[12015.915146] SCSI OP 2ah with too big sectors 1347 exceeds backend hw_max_sectors: 1024 [12015.977744] SCSI OP 2ah with too big sectors 2048 exceeds backend hw_max_sectors: 1024
This issue is present in >= v3.5 based kernels, introduced after the removal of se_task logic.
Reported-by: Viljami Ilola <azmulx@netikka.fi> Cc: <stable@vger.kernel.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> --- drivers/target/target_core_file.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/target/target_core_file.h b/drivers/target/target_core_file.h index 876ae53..291f66e 100644 --- a/drivers/target/target_core_file.h +++ b/drivers/target/target_core_file.h @@ -7,7 +7,7 @@ #define FD_DEVICE_QUEUE_DEPTH 32 #define FD_MAX_DEVICE_QUEUE_DEPTH 128 #define FD_BLOCKSIZE 512 -#define FD_MAX_SECTORS 1024 +#define FD_MAX_SECTORS 2048 #define RRF_EMULATE_CDB 0x01 #define RRF_GOT_LBA 0x02 -- 1.7.10.4
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