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blockdev: add page #13922

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blockdev: add page #13922

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blockdev: added page for the command
DarkMatter-999 Oct 1, 2024
9715248
blockdev: updated formatting
DarkMatter-999 Oct 1, 2024
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36 changes: 36 additions & 0 deletions pages/linux/blockdev.md
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# blockdev

> Call block device ioctls from the command line.
> More information: <https://manned.org/man/blockdev>.
- Print a report for all devices:

`blockdev --report`

- Print a report for a specific device:

`blockdev --report /dev/sdX`

- Get the size of a device in 512-byte sectors:

`blockdev --getsz /dev/sdX`

- Set read-only:

`blockdev --setro /dev/sdX`

- Set read-write:

`blockdev --setrw /dev/sdX`

- Flush buffers:

`blockdev --flushbufs /dev/sdX`

- Get the physical block size:

`blockdev --getpbsz /dev/sdX`

- Set the read-ahead value to 128 sectors:

`blockdev --setra 128 /dev/sdX`
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Suggested change
`blockdev --report /dev/sdX`
- Get the size of a device in 512-byte sectors:
`blockdev --getsz /dev/sdX`
- Set read-only:
`blockdev --setro /dev/sdX`
- Set read-write:
`blockdev --setrw /dev/sdX`
- Flush buffers:
`blockdev --flushbufs /dev/sdX`
- Get the physical block size:
`blockdev --getpbsz /dev/sdX`
- Set the read-ahead value to 128 sectors:
`blockdev --setra 128 /dev/sdX`
`blockdev --report {{/dev/sdX}}`
- Get the size of a device in 512-byte sectors:
`blockdev --getsz {{/dev/sdX}}`
- Set read-only:
`blockdev --setro {{/dev/sdX}}`
- Set read-write:
`blockdev --setrw {{/dev/sdX}}`
- Flush buffers:
`blockdev --flushbufs {{/dev/sdX}}`
- Get the physical block size:
`blockdev --getpbsz {{/dev/sdX}}`
- Set the read-ahead value to 128 sectors:
`blockdev --setra 128 {{/dev/sdX}}`

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Do the device paths need to be absolute or can they be relative?

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Yeah, the paths are required to be absolute.