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Filipe Manana
315e6b4ed4
Verify that when a fitrim operation is made against a btrfs filesystem, the ranges [0, 64Kb[ and [68Kb, 1Mb[ of the device are not discarded, they remain with the content they had before the fitrim operation. These regions of the device are reserved for a boot loader to use at its will. In the 4.3 linux kernel we got a regression that allowed a fitrim operation to discard these reserved ranges of the device, resulting in the filesystem becoming unbootable after a fitrim. The issue is fixed by the following patch (targeted for 4.5 and 4.3/4.4 stable releases): "Btrfs: fix fitrim discarding device area reserved for boot loader's use" Signed-off-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
13 lines
415 B
Plaintext
13 lines
415 B
Plaintext
QA output created by 116
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wrote 65536/65536 bytes at offset 0
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 978944/978944 bytes at offset 69632
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XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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Content of the ranges [0, 64Kb] and [68Kb, 1Mb[ after fitrim:
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0000000 fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
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*
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0200000
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0210000 fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
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*
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4000000
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