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| author | Max Reitz <mreitz@redhat.com> | 2019-05-07 22:35:03 +0200 |
|---|---|---|
| committer | Max Reitz <mreitz@redhat.com> | 2019-06-14 14:16:57 +0200 |
| commit | 8eaac025fb43b16a38671e6b80e7059cd8af3403 (patch) | |
| tree | f437fa3bf14089b130284fa9f305a50632283c9c /qemu-img.texi | |
| parent | 3d96cb91d7812c27142e0c722482bfd35661e50c (diff) | |
qemu-img: Add salvaging mode to convert
This adds a salvaging mode (--salvage) to qemu-img convert which ignores
read errors and treats the respective areas as containing only zeroes.
This can be used for instance to at least partially recover the data
from terminally corrupted qcow2 images.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20190507203508.18026-3-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
Diffstat (limited to 'qemu-img.texi')
| -rw-r--r-- | qemu-img.texi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/qemu-img.texi b/qemu-img.texi index e8bc0fd7a2..c8e9bba515 100644 --- a/qemu-img.texi +++ b/qemu-img.texi @@ -175,6 +175,10 @@ improve performance if the data is remote, such as with NFS or iSCSI backends, but will not automatically sparsify zero sectors, and may result in a fully allocated target image depending on the host support for getting allocation information. +@item --salvage +Try to ignore I/O errors when reading. Unless in quiet mode (@code{-q}), errors +will still be printed. Areas that cannot be read from the source will be +treated as containing only zeroes. @end table Parameters to dd subcommand: |