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Date: Thu, 19 Feb 2009 23:58:43 -0800 From: "Nicholas A. Bellinger" <nab@...ux-iscsi.org> To: LKML <linux-kernel@...r.kernel.org>, linux-scsi <linux-scsi@...r.kernel.org> Cc: Douglas Gilbert <dgilbert@...erlog.com>, James Bottomley <James.Bottomley@...senPartnership.com>, "Martin K. Petersen" <martin.petersen@...cle.com>, Matthew Wilcox <matthew@....cx>, Alan Stern <stern@...land.harvard.edu>, Mike Christie <michaelc@...wisc.edu>, FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>, Hannes Reinecke <hare@...e.de>, Andrew Morton <akpm@...ux-foundation.org> Subject: [PATCH 0/7] [Target_Core_Mod]: Add support for 4k physical/virtual sector/block size devices Greetings all, This patch series adds support for 4k, 2k, 1k (eg: all non 512 byte) sector/block size usage in Target_Core_Mod subsystem plugins. None 512-byte sector/block size emulation has been added for virtual objects provided by IBLOCK, FILEIO and RAMDISK subsystem plugins. 4k sector support SHOULD be working with pSCSI (passthrough to Linux/SCSI and struct scsi_device) as well, but has not been tested on real 4k sector capable SAS or SATA SSD hardware just yet. If anyone would like to test their 4k capable drives against the current code, please let me know your interest! Here is things look like so far: *) IBLOCK echo 4096 > /sys/kernel/config/target/core/iblock_0/lvm_test0/attrib/block_size cat /sys/kernel/config/target/core/iblock_0/lvm_test0/attrib/*block_size 4096 512 [ 4539.311153] scsi 8:0:0:0: Direct-Access LIO-ORG IBLOCK v3.0 PQ: 0 ANSI: 5 [ 4539.421510] sd 8:0:0:0: [sdg] 128000 4096-byte hardware sectors (524 MB) [ 4539.533309] sd 8:0:0:0: [sdg] Write Protect is off [ 4539.533316] sd 8:0:0:0: [sdg] Mode Sense: 2f 00 00 00 *) FILEIO echo 4096 > /sys/kernel/config/target/core/fileio_0/fileio/attrib/block_size cat /sys/kernel/config/target/core/fileio_0/fileio/attrib/*block_size 4096 512 [ 4539.975546] scsi 8:0:0:3: Direct-Access LIO-ORG FILEIO v3.0 PQ: 0 ANSI: 5 [ 4539.978280] sd 8:0:0:3: [sdj] 32768 4096-byte hardware sectors (134 MB) [ 4539.984753] sd 8:0:0:3: [sdj] Write Protect is off [ 4539.984760] sd 8:0:0:3: [sdj] Mode Sense: 2f 00 00 00 *) RAMDISK echo 4096 > /sys/kernel/config/target/core/rd_mcp_0/ramdisk/attrib/block_size cat /sys/kernel/config/target/core/rd_mcp_0/ramdisk/attrib/*block_size 4096 512 [ 4539.655242] scsi 8:0:0:2: Direct-Access LIO-ORG RAMDISK-MCP v3.0 PQ: 0 ANSI: 5 [ 4539.752674] sd 8:0:0:2: [sdi] 32768 4096-byte hardware sectors (134 MB) [ 4539.757628] sd 8:0:0:2: [sdi] Write Protect is off [ 4539.757633] sd 8:0:0:2: [sdi] Mode Sense: 2f 00 00 00 This patch series was tested using badblocks -vswf against IBLOCK, FILEIO and RAMDISK storage objects connected to an Open/iSCSI initiator. This patch is made against lio-core-2.6.git/master and tested on v2.6.29-rc5 x86 32-bit HVM. The lio-core-2.6.git tree can be found at: http://git.kernel.org/?p=linux/kernel/git/nab/lio-core-2.6.git;a=summary [PATCH 1/7] [Target_Core_Mod]: Add hw_block_size and block_size device attributes [PATCH 2/7] [Target_Core_Mod]: Update core logic to use DEV_ATTRIB(dev)->block_size [PATCH 3/7] [Target_Core_Mod]: Add div64.o to Makefile for target_core_mod [PATCH 4/7] [Target_Core_Mod/IBLOCK]: Add 4k sector/block size emulation support [PATCH 5/7] [Target_Core_Mod/FILEIO]: Add 4k sector/block size emulation support [PATCH 6/7] [Target_Core_Mod/RAMDISK]: Add 4k sector/block size emulation support [PATCH 7/7] [Target_Core_Mod/ConfigFS]: Add hw_block_size and block_size configfs attributes drivers/lio-core/Makefile | 1 + drivers/lio-core/iscsi_target_configfs.c | 6 ++ drivers/lio-core/target_core_base.h | 2 + drivers/lio-core/target_core_configfs.c | 8 +++ drivers/lio-core/target_core_device.c | 37 +++++++++++ drivers/lio-core/target_core_device.h | 1 + drivers/lio-core/target_core_file.c | 58 +++++++++-------- drivers/lio-core/target_core_iblock.c | 101 ++++++++++++++++++++++++++++-- drivers/lio-core/target_core_iblock.h | 1 - drivers/lio-core/target_core_rd.c | 31 ++++++--- drivers/lio-core/target_core_seobj.c | 12 +++- drivers/lio-core/target_core_transport.c | 48 +++++++++------ drivers/lio-core/target_core_transport.h | 4 +- 13 files changed, 241 insertions(+), 69 deletions(-) Comments..? --nab -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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