virt-get-kernel(1) | Virtualization Support | virt-get-kernel(1) |
virt-get-kernel - Extract kernel and ramdisk from guests
virt-get-kernel [--options] -d domname virt-get-kernel [--options] -a disk.img
This option extracts the kernel and initramfs from a guest.
The format of the disk image is automatically detected unless you specify it by using the --format option.
In the case where the guest contains multiple kernels, the one with the highest version number is chosen. To extract arbitrary kernels from the disk image, see guestfish(1). To extract the entire "/boot" directory of a guest, see virt-copy-out(1).
ディスクイメージの形式は自動的に検出されます。強制的に特定の形式を使用するには --format オプションを使用します。
ゲストのブロックデバイスを直接指定していると((-a))、libvirt は何も使用されません。
仮想マシンのディスクイメージが信頼できない raw 形式である場合、 ディスク形式を指定するためにこのオプションを使用すべきです。 これにより、悪意のある仮想マシンにより起こり得る セキュリティ問題を回避できます (CVE-2010-3851)。
If not specified, the default output is the current directory.
If a prefix is specified, then there will be a dash ("-") after the prefix and before the rest of the file name; for example, a kernel in the guest like "vmlinuz-3.19.0-20-generic" is saved as "mydistro-vmlinuz-3.19.0-20-generic" when the prefix is "mydistro".
See also --unversioned-names.
If enabled, files will be saved locally just with the base name; for example, kernel and ramdisk in the guest like "vmlinuz-3.19.0-20-generic" and "initrd.img-3.19.0-20-generic" are saved respectively as "vmlinuz" and "initrd.img".
See also --prefix.
The --machine-readable option can be used to make the output more machine friendly, which is useful when calling virt-get-kernel from other programs, GUIs etc.
Use the option on its own to query the capabilities of the virt-get-kernel binary. Typical output looks like this:
$ virt-get-kernel --machine-readable virt-get-kernel
A list of features is printed, one per line, and the program exits with status 0.
It is possible to specify a format string for controlling the output; see "ADVANCED MACHINE READABLE OUTPUT" in guestfs(3).
For other environment variables which affect all libguestfs programs, see "ENVIRONMENT VARIABLES" in guestfs(3).
このプログラムは、成功すると 0 を、エラーがあると 0 以外を返します。
guestfs(3), guestfish(1), guestmount(1), virt-copy-out(1), http://libguestfs.org/.
Richard W.M. Jones http://people.redhat.com/~rjones/
Copyright (C) 2013-2019 Red Hat Inc.
To get a list of bugs against libguestfs, use this link: https://bugzilla.redhat.com/buglist.cgi?component=libguestfs&product=Virtualization+Tools
To report a new bug against libguestfs, use this link: https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Virtualization+Tools
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2019-02-07 | libguestfs-1.40.2 |