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Some documentation changes.

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Identation changes.
This commit is contained in:
Andrea Mazzoleni 2011-05-02 20:35:28 +02:00
parent cfbe9343ae
commit 42ece4eb59
3 changed files with 20 additions and 10 deletions
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20
HISTORY
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@ -5,17 +5,25 @@ SnapRAID HISTORY
==========
* Fixed a bug in the check command when detecting garbage data over the
expected end of the file. No special action is required to update.
* Added RAID6 support, and allow to specify multiple content files.
* Added a filtering include logic, where anything not explicitely included
is excluded.
* Changed the default checksum to Murmur3 hash. It's a lot faster than MD5.
You can check the speed with the "snapraid -T" command.
You can check its speed with the "snapraid -T" command.
MD5 is still supported for backward compatibility.
To convert to the new Murmur3 hash, simply remove the 'content' file,
and start a new whole 'sync'.
* Added RAID6 support. It's used the very good RAID6 library made by H. Peter Anvin
also used in the Linux Kernel. It contains optimized implementations for SSE2
and MMX.
* Added support for multiple 'content' files. You can save extra copy to be able
to verify the checksums also if you lose all the 'content' files in the parity
drives.
* Added a filtering include logic, where anything not explicitely included
is excluded. For example, it allow to include only the files in a predefined
set of directories.
* The check command returns with an error code if any kind of error is present.
Previously it was returning an error only if unrecoverable errors were
present.
* Opening the files in sequential mode in Windows. This should give a light
speedup in Windows.
* Opening the files in sequential mode in Windows. This should give a speedup
in Windows.
1.0 2011/4
==========

2
TODO
View file

@ -7,6 +7,8 @@ This is a list of possible TODO for SnapRAID. The order is not relevant.
* Easy way to find files using a specified block.
* Implement a restore command to recover files, without the integrity check.
* When fixing, overwrite the present file only if the backuped one can be
completely restored.

8
murmurhash3.c
View file

@ -81,19 +81,19 @@ void MurmurHash3_x86_128(const void * key, unsigned len, uint32_t seed, void* ou
uint32_t k3 = swap32(blocks[2]);
uint32_t k4 = swap32(blocks[3]);
k1 *= c1; k1 = rotl32(k1,15); k1 *= c2; h1 ^= k1;
k1 *= c1; k1 = rotl32(k1,15); k1 *= c2; h1 ^= k1;
h1 = rotl32(h1,19); h1 += h2; h1 = h1*5+0x561ccd1b;
k2 *= c2; k2 = rotl32(k2,16); k2 *= c3; h2 ^= k2;
k2 *= c2; k2 = rotl32(k2,16); k2 *= c3; h2 ^= k2;
h2 = rotl32(h2,17); h2 += h3; h2 = h2*5+0x0bcaa747;
k3 *= c3; k3 = rotl32(k3,17); k3 *= c4; h3 ^= k3;
k3 *= c3; k3 = rotl32(k3,17); k3 *= c4; h3 ^= k3;
h3 = rotl32(h3,15); h3 += h4; h3 = h3*5+0x96cd1c35;
k4 *= c4; k4 = rotl32(k4,18); k4 *= c1; h4 ^= k4;
k4 *= c4; k4 = rotl32(k4,18); k4 *= c1; h4 ^= k4;
h4 = rotl32(h4,13); h4 += h1; h4 = h4*5+0x32ac3b17;