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qcow2: Implement data-file-raw create option

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Provide an option to force QEMU to always keep the external data file
consistent as a standalone read-only raw image.

At the moment, this means making sure that write_zeroes requests are
forwarded to the data file instead of just updating the metadata, and
checking that no backing file is used.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2019-02-22 14:29:38 +01:00
parent 9b890bdcb6
commit 6c3944dc62
6 changed files with 109 additions and 3 deletions
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27
tests/qemu-iotests/082.out
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@ -49,6 +49,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -71,6 +72,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -93,6 +95,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -115,6 +118,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -137,6 +141,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -159,6 +164,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -181,6 +187,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -203,6 +210,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -240,6 +248,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -314,6 +323,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -336,6 +346,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -358,6 +369,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -380,6 +392,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -402,6 +415,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -424,6 +438,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -446,6 +461,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -468,6 +484,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -505,6 +522,7 @@ Supported options:
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -587,6 +605,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -610,6 +629,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -633,6 +653,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -656,6 +677,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -679,6 +701,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -702,6 +725,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -725,6 +749,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -748,6 +773,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'
@ -788,6 +814,7 @@ Creation options for 'qcow2':
cluster_size=<size> - qcow2 cluster size
compat=<str> - Compatibility level (0.10 or 1.1)
data_file=<str> - File name of an external data file
data_file_raw=<bool (on/off)> - The external data file must stay valid as a raw image
encrypt.cipher-alg=<str> - Name of encryption cipher algorithm
encrypt.cipher-mode=<str> - Name of encryption cipher mode
encrypt.format=<str> - Encrypt the image, format choices: 'aes', 'luks'