NAME
nbdkit-full-plugin - nbdkit plugin which is always full
SYNOPSIS
nbdkit full [size=]SIZE
DESCRIPTION
"nbdkit-full-plugin" is a plugin for nbdkit(1). Reads from this virtual disk return zeroes. All writes and similar operations like zero and trim fail with "ENOSPC" (No space left on device) error.
In other words this behaves like a sparse (thin-provisioned) virtual disk which has run out of space on the host.
Equivalent
filters
Although this is a standalone plugin, it is equivalent to
using either nbdkit-readonly-filter(1):
nbdkit --filter=readonly null SIZE
nbdkit
--filter=error null SIZE \
error-pwrite=ENOSPC error-pwrite-rate=100% \
error-trim=ENOSPC error-trim-rate=100% \
error-zero=ENOSPC error-zero-rate=100%
Those filters may be more flexible because you can place them on top of other plugins and you can control when to inject errors.
PARAMETERS
[size=]SIZE
Specify the virtual size of the disk image.
This parameter is required.
"size=" is a magic config key and may be omitted in most cases. See "Magic parameters" in nbdkit(1).
FILES
$plugindir/nbdkit-full-plugin.so
The plugin.
Use "nbdkit --dump-config" to find the location of $plugindir.
VERSION
"nbdkit-full-plugin" first appeared in nbdkit 1.10.
SEE ALSO
nbdkit(1), nbdkit-plugin(3), nbdkit-error-filter(1), nbdkit-null-plugin(1), nbdkit-ones-plugin(1), nbdkit-pattern-plugin(1), nbdkit-random-plugin(1). nbdkit-readonly-filter(1), nbdkit-sparse-random-plugin(1), nbdkit-zero-plugin(1).
AUTHORS
Richard W.M. Jones
COPYRIGHT
Copyright Red Hat
LICENSE
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. | ||
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Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. | ||
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Neither the name of Red Hat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. |
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