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r: 148784
b: refs/heads/master
c: e74cc06
h: refs/heads/master
v: v3
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Louis Rilling authored and Joel Becker committed Apr 30, 2009
1 parent 456586a commit c864ab3
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: d645727bdc2aed8e2e0e9496248f735481b5049a
refs/heads/master: e74cc06df3b05e2b2c1611a043f6e6dcadaab1eb
59 changes: 0 additions & 59 deletions trunk/Documentation/ABI/testing/sysfs-block
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Expand Up @@ -60,62 +60,3 @@ Description:
Indicates whether the block layer should automatically
generate checksums for write requests bound for
devices that support receiving integrity metadata.

What: /sys/block/<disk>/alignment_offset
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Storage devices may report a physical block size that is
bigger than the logical block size (for instance a drive
with 4KB physical sectors exposing 512-byte logical
blocks to the operating system). This parameter
indicates how many bytes the beginning of the device is
offset from the disk's natural alignment.

What: /sys/block/<disk>/<partition>/alignment_offset
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Storage devices may report a physical block size that is
bigger than the logical block size (for instance a drive
with 4KB physical sectors exposing 512-byte logical
blocks to the operating system). This parameter
indicates how many bytes the beginning of the partition
is offset from the disk's natural alignment.

What: /sys/block/<disk>/queue/logical_block_size
Date: May 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
This is the smallest unit the storage device can
address. It is typically 512 bytes.

What: /sys/block/<disk>/queue/physical_block_size
Date: May 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
This is the smallest unit the storage device can write
without resorting to read-modify-write operation. It is
usually the same as the logical block size but may be
bigger. One example is SATA drives with 4KB sectors
that expose a 512-byte logical block size to the
operating system.

What: /sys/block/<disk>/queue/minimum_io_size
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Storage devices may report a preferred minimum I/O size,
which is the smallest request the device can perform
without incurring a read-modify-write penalty. For disk
drives this is often the physical block size. For RAID
arrays it is often the stripe chunk size.

What: /sys/block/<disk>/queue/optimal_io_size
Date: April 2009
Contact: Martin K. Petersen <martin.petersen@oracle.com>
Description:
Storage devices may report an optimal I/O size, which is
the device's preferred unit of receiving I/O. This is
rarely reported for disk drives. For RAID devices it is
usually the stripe width or the internal block size.
33 changes: 0 additions & 33 deletions trunk/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss

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18 changes: 0 additions & 18 deletions trunk/Documentation/ABI/testing/sysfs-devices-cache_disable

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8 changes: 2 additions & 6 deletions trunk/Documentation/ABI/testing/sysfs-firmware-acpi
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Expand Up @@ -69,13 +69,9 @@ Description:
gpe1F: 0 invalid
gpe_all: 1192
sci: 1194
sci_not: 0

sci - The number of times the ACPI SCI
has been called and claimed an interrupt.

sci_not - The number of times the ACPI SCI
has been called and NOT claimed an interrupt.
sci - The total number of times the ACPI SCI
has claimed an interrupt.

gpe_all - count of SCI caused by GPEs.

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