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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-09 22:34:26 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-09 22:34:26 +0300 |
commit | e9a83bd2322035ed9d7dcf35753d3f984d76c6a5 (patch) | |
tree | 66dc466ff9aec0f9bb7f39cba50a47eab6585559 /Documentation/device-mapper/striped.txt | |
parent | 7011b7e1b702cc76f9e969b41d9a95969f2aecaa (diff) | |
parent | 454f96f2b738374da4b0a703b1e2e7aed82c4486 (diff) | |
download | linux-e9a83bd2322035ed9d7dcf35753d3f984d76c6a5.tar.xz |
Merge tag 'docs-5.3' of git://git.lwn.net/linux
Pull Documentation updates from Jonathan Corbet:
"It's been a relatively busy cycle for docs:
- A fair pile of RST conversions, many from Mauro. These create more
than the usual number of simple but annoying merge conflicts with
other trees, unfortunately. He has a lot more of these waiting on
the wings that, I think, will go to you directly later on.
- A new document on how to use merges and rebases in kernel repos,
and one on Spectre vulnerabilities.
- Various improvements to the build system, including automatic
markup of function() references because some people, for reasons I
will never understand, were of the opinion that
:c:func:``function()`` is unattractive and not fun to type.
- We now recommend using sphinx 1.7, but still support back to 1.4.
- Lots of smaller improvements, warning fixes, typo fixes, etc"
* tag 'docs-5.3' of git://git.lwn.net/linux: (129 commits)
docs: automarkup.py: ignore exceptions when seeking for xrefs
docs: Move binderfs to admin-guide
Disable Sphinx SmartyPants in HTML output
doc: RCU callback locks need only _bh, not necessarily _irq
docs: format kernel-parameters -- as code
Doc : doc-guide : Fix a typo
platform: x86: get rid of a non-existent document
Add the RCU docs to the core-api manual
Documentation: RCU: Add TOC tree hooks
Documentation: RCU: Rename txt files to rst
Documentation: RCU: Convert RCU UP systems to reST
Documentation: RCU: Convert RCU linked list to reST
Documentation: RCU: Convert RCU basic concepts to reST
docs: filesystems: Remove uneeded .rst extension on toctables
scripts/sphinx-pre-install: fix out-of-tree build
docs: zh_CN: submitting-drivers.rst: Remove a duplicated Documentation/
Documentation: PGP: update for newer HW devices
Documentation: Add section about CPU vulnerabilities for Spectre
Documentation: platform: Delete x86-laptop-drivers.txt
docs: Note that :c:func: should no longer be used
...
Diffstat (limited to 'Documentation/device-mapper/striped.txt')
-rw-r--r-- | Documentation/device-mapper/striped.txt | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/Documentation/device-mapper/striped.txt b/Documentation/device-mapper/striped.txt deleted file mode 100644 index 07ec492cceee..000000000000 --- a/Documentation/device-mapper/striped.txt +++ /dev/null @@ -1,57 +0,0 @@ -dm-stripe -========= - -Device-Mapper's "striped" target is used to create a striped (i.e. RAID-0) -device across one or more underlying devices. Data is written in "chunks", -with consecutive chunks rotating among the underlying devices. This can -potentially provide improved I/O throughput by utilizing several physical -devices in parallel. - -Parameters: <num devs> <chunk size> [<dev path> <offset>]+ - <num devs>: Number of underlying devices. - <chunk size>: Size of each chunk of data. Must be at least as - large as the system's PAGE_SIZE. - <dev path>: Full pathname to the underlying block-device, or a - "major:minor" device-number. - <offset>: Starting sector within the device. - -One or more underlying devices can be specified. The striped device size must -be a multiple of the chunk size multiplied by the number of underlying devices. - - -Example scripts -=============== - -[[ -#!/usr/bin/perl -w -# Create a striped device across any number of underlying devices. The device -# will be called "stripe_dev" and have a chunk-size of 128k. - -my $chunk_size = 128 * 2; -my $dev_name = "stripe_dev"; -my $num_devs = @ARGV; -my @devs = @ARGV; -my ($min_dev_size, $stripe_dev_size, $i); - -if (!$num_devs) { - die("Specify at least one device\n"); -} - -$min_dev_size = `blockdev --getsz $devs[0]`; -for ($i = 1; $i < $num_devs; $i++) { - my $this_size = `blockdev --getsz $devs[$i]`; - $min_dev_size = ($min_dev_size < $this_size) ? - $min_dev_size : $this_size; -} - -$stripe_dev_size = $min_dev_size * $num_devs; -$stripe_dev_size -= $stripe_dev_size % ($chunk_size * $num_devs); - -$table = "0 $stripe_dev_size striped $num_devs $chunk_size"; -for ($i = 0; $i < $num_devs; $i++) { - $table .= " $devs[$i] 0"; -} - -`echo $table | dmsetup create $dev_name`; -]] - |