diff options
| -rw-r--r-- | man/fsverity.1.md | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/man/fsverity.1.md b/man/fsverity.1.md index 8297d86..f268706 100644 --- a/man/fsverity.1.md +++ b/man/fsverity.1.md @@ -49,11 +49,16 @@ Options accepted by **fsverity digest**: **\-\-block-size**=*BLOCK_SIZE* : The Merkle tree block size (in bytes) to use. This must be a power of 2 and - at least twice the size of the hash values. However, note that currently - (as of Linux kernel v5.13), the Linux kernel implementations of fs-verity - only support the case where the Merkle tree block size is equal to the - system page size, usually 4096 bytes. The default value of this option is - 4096. + at least twice the size of the hash values. + + Note that the Linux kernel implementations of fs-verity place further + restrictions on the Merkle tree block size. Linux v6.2 and earlier require + that the Merkle tree block size be equal to both the system page size and + the filesystem block size. These values are often 4096. Linux v6.3 and + later are more flexible; they require that the Merkle tree block size be a + power of 2 that is greater than or equal to 1024 and less than or equal to + the system page size and the filesystem block size. The default value of + this option is 4096. **\-\-compact** : When printing the file digest, only print the actual digest hex string; |