"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "restripe.c" between
mdadm-4.1.tar.gz and mdadm-4.2.tar.gz

About: mdadm is a tool for creating, managing and monitoring device arrays using the "md" driver in Linux, also known as Software RAID arrays.

restripe.c  (mdadm-4.1)	:	restripe.c  (mdadm-4.2)
skipping to change at line 336		skipping to change at line 336
/* Compute inverse table x^-1 == x^254 */		/* Compute inverse table x^-1 == x^254 */
for (i = 0; i < 256; i++)		for (i = 0; i < 256; i++)
raid6_gfinv[i] = gfpow(i, 254);		raid6_gfinv[i] = gfpow(i, 254);
/* Compute inv(2^x + 1) (exponent-xor-inverse) table */		/* Compute inv(2^x + 1) (exponent-xor-inverse) table */
for (i = 0; i < 256; i ++)		for (i = 0; i < 256; i ++)
raid6_gfexi[i] = raid6_gfinv[raid6_gfexp[i] ^ 1];		raid6_gfexi[i] = raid6_gfinv[raid6_gfexp[i] ^ 1];
/* Compute log and inverse log */		/* Compute log and inverse log */
/* Modified code from:		/* Modified code from:
* http://web.eecs.utk.edu/~plank/plank/papers/CS-96-332.html		* https://web.eecs.utk.edu/~plank/plank/papers/CS-96-332.html
*/		*/
b = 1;		b = 1;
raid6_gflog[0] = 0;		raid6_gflog[0] = 0;
raid6_gfilog[255] = 0;		raid6_gfilog[255] = 0;
for (log = 0; log < 255; log++) {		for (log = 0; log < 255; log++) {
raid6_gflog[b] = (uint8_t) log;		raid6_gflog[b] = (uint8_t) log;
raid6_gfilog[log] = (uint8_t) b;		raid6_gfilog[log] = (uint8_t) b;
b = b << 1;		b = b << 1;
if (b & 256) b = b ^ 0435;		if (b & 256) b = b ^ 0435;
skipping to change at line 869		skipping to change at line 869
if (!tables_ready)		if (!tables_ready)
make_tables();		make_tables();
for ( i = 0 ; i < raid_disks ; i++)		for ( i = 0 ; i < raid_disks ; i++)
stripes[i] = stripe_buf + i * chunk_size;		stripes[i] = stripe_buf + i * chunk_size;
while (length > 0) {		while (length > 0) {
int disk;		int disk;
for (i = 0 ; i < raid_disks ; i++) {		for (i = 0 ; i < raid_disks ; i++) {
lseek64(source[i], offsets[i]+start, 0);		if ((lseek64(source[i], offsets[i]+start, 0) < 0) ||
read(source[i], stripes[i], chunk_size);		(read(source[i], stripes[i], chunk_size) !=
		chunk_size)) {
		free(q);
		free(p);
		free(blocks);
		free(stripes);
		free(stripe_buf);
		return -1;
		}
}		}
for (i = 0 ; i < data_disks ; i++) {		for (i = 0 ; i < data_disks ; i++) {
int disk = geo_map(i, start/chunk_size, raid_disks,		int disk = geo_map(i, start/chunk_size, raid_disks,
level, layout);		level, layout);
blocks[i] = stripes[disk];		blocks[i] = stripes[disk];
printf("%d->%d\n", i, disk);		printf("%d->%d\n", i, disk);
}		}
switch(level) {		switch(level) {
case 6:		case 6:
qsyndrome(p, q, (uint8_t**)blocks, data_disks, chunk_size );		qsyndrome(p, q, (uint8_t**)blocks, data_disks, chunk_size );
End of changes. 2 change blocks.
3 lines changed or deleted		11 lines changed or added

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