68 lines
3.3 KiB
Bash
Executable file
68 lines
3.3 KiB
Bash
Executable file
#!/bin/sh
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. support.sh
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# The following commented-out examples of how to run blocktest for certain
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# driver and device pairs. The syntax of the calls is:
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#
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# block_test <device> <parameters>
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#
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# <device> is the path to a device to run blocktest on. This may be a full
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# disk, a partition, or a subpartition. If possible, give blocktest the whole
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# disk; otherwise preferably the first partition with a size of slightly over
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# 8GB (for ATA) (better yet: slightly over 128GB); even fewer tests can be done
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# if you give it only a subpartition.
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#
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# <parameters> is a comma-separated list of parameters for blocktest. The
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# following parameters are supported and in fact expected:
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#
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# rw (or) ro Specifying "rw" will let blocktest write to the target
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# partition. This allows for a lot more tests, but keep in mind
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# that any data on the partition (and, if the driver misbehaves,
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# on other partitions and possibly other disks) WILL BE DESTROYED.
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# Use "ro" for read-only mediums, such as CD-ROMs.
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# sector Sector size, in bytes. This should be 512 for ATA devices, and
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# 2048 for ATAPI devices. The default is 512.
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# min_read Minimum size of a read request. This must be at least 1 and at
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# most the sector size, and the sector size must be divisible by
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# it. A value other than the sector size allows blocktest to test
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# sub-sector reads.
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# min_write Minimum size of a write request. This must be at least 1 and at
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# most the sector size. Sub-sector write support is not common in
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# drivers, and therefore not yet well tested by blocktest. This
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# parameter is optional; if omitted, the sector size is used.
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# element Minimum size of a vector element within a larger I/O request.
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# This must be at least 1 and at most min_read, and min_read must
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# be divisible by this value. The idea is that several small
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# elements may add up to the minimum read size.
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# max Maximum size of any request. This should be a multiple of the
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# sector size. Blocktest will not test what happens when this
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# value is exceeded, but it will generate large requests up to
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# this value. For drivers that do not have a maximum request size,
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# simply use some large value (typically several megabytes).
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#
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# Before commenting out any entry, you MUST edit the device name for that
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# entry, or you WILL risk losing arbitrary data. You may run multiple tests in
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# parallel, on different devices. Note that at_wini has no maximum request
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# size, so an arbitray size is used. Finally, a disclaimer: a buggy device
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# driver may destroy any data it has access to, so use at your own risk.
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# AT_WINI ATA TEST (for IDE disk devices)
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#block_test /dev/c0d1 "rw,sector=512,min_read=512,element=2,max=16777216"
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# AT_WINI ATAPI TEST (for IDE CD-ROM devices)
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#block_test /dev/c0d2 "ro,sector=2048,min_read=2,element=2,max=16777216"
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# AHCI ATA TEST (for SATA disk devices)
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#block_test /dev/c2d0 "rw,sector=512,min_read=2,element=2,max=4194304"
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# AHCI ATAPI TEST (for SATA CD-ROM devices)
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#block_test /dev/c2d1 "ro,sector=2048,min_read=2,element=2,max=4194304"
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# VND TEST (for configured vnode disk devices)
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#block_test /dev/vnd0 "rw,min_read=1,min_write=1,element=1,max=16777216"
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