Unable to mount XFS volume

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Issue

When trying to boot the operating system, the following error message is thrown:
```
Failed to mount /sysroot
```
When tried to execute xfs_repair /dev/sda2, got the error:
```
xfs_repair: error - read only 0 of 512 bytes
```

Environment

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
XFS Filesystem

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