Lines Matching defs:layout
220 * raid set level, layout and chunk sectors backup/restore
298 {"raid4", "raid4 (dedicated first parity disk)", 1, 2, 5, ALGORITHM_PARITY_0}, /* raid4 layout = raid5_0 */
429 static bool __is_raid10_far(int layout);
525 #define RAID10_FAR_COPIES_SHIFT 8 /* raid10 # far copies shift (2nd byte of layout) */
527 /* Return md raid10 near copies for @layout */
528 static unsigned int __raid10_near_copies(int layout)
530 return layout & 0xFF;
533 /* Return md raid10 far copies for @layout */
534 static unsigned int __raid10_far_copies(int layout)
536 return __raid10_near_copies(layout >> RAID10_FAR_COPIES_SHIFT);
539 /* Return true if md raid10 offset for @layout */
540 static bool __is_raid10_offset(int layout)
542 return !!(layout & RAID10_OFFSET);
545 /* Return true if md raid10 near for @layout */
546 static bool __is_raid10_near(int layout)
548 return !__is_raid10_offset(layout) && __raid10_near_copies(layout) > 1;
551 /* Return true if md raid10 far for @layout */
552 static bool __is_raid10_far(int layout)
554 return !__is_raid10_offset(layout) && __raid10_far_copies(layout) > 1;
557 /* Return md raid10 layout string for @layout */
558 static const char *raid10_md_layout_to_format(int layout)
566 if (__is_raid10_offset(layout))
569 if (__raid10_near_copies(layout) > 1)
572 if (__raid10_far_copies(layout) > 1)
591 /* Return md raid10 copies for @layout */
592 static unsigned int raid10_md_layout_to_copies(int layout)
594 return max(__raid10_near_copies(layout), __raid10_far_copies(layout));
635 static bool __got_raid10(struct raid_type *rtp, const int layout)
641 return __is_raid10_near(layout);
643 return __is_raid10_offset(layout);
645 return __is_raid10_far(layout);
666 /* Return raid_type for @name based derived from @level and @layout */
667 static struct raid_type *get_raid_type_by_ll(const int level, const int layout)
672 /* RAID10 special checks based on @layout flags/properties */
674 (__got_raid10(rtp, layout) || rtp->algorithm == layout))
716 mddev->new_layout = mddev->layout;
729 mddev->layout = mddev->new_layout;
763 rs->md.layout = raid_type->algorithm;
764 rs->md.new_layout = rs->md.layout;
1512 rs->ti->error = "Failed to recognize new raid10 layout";
1752 if (__is_raid10_offset(mddev->layout))
1755 near_copies = __raid10_near_copies(mddev->layout);
1769 __raid10_far_copies(mddev->layout) > 1)
1777 max(near_copies, __raid10_far_copies(mddev->layout)) == mddev->raid_disks)
1816 mddev->layout == ALGORITHM_PARITY_N)
1823 mddev->layout == ALGORITHM_PARITY_N)
1828 mddev->layout == ALGORITHM_PARITY_N)
1838 ((mddev->layout == ALGORITHM_PARITY_N && mddev->new_layout == ALGORITHM_PARITY_N) ||
1846 mddev->layout == ALGORITHM_PARITY_N)
1851 mddev->layout == ALGORITHM_PARITY_N)
1856 ((mddev->layout == ALGORITHM_PARITY_N && mddev->new_layout == ALGORITHM_PARITY_N) ||
1874 /* True if layout is set to reshape. */
1878 rs->md.new_layout != rs->md.layout ||
1952 __le32 layout;
1983 * them from old to new layout
2120 sb->layout = cpu_to_le32(mddev->layout);
2232 mddev->layout = le32_to_cpu(sb->layout);
2240 /* Superblock is authoritative wrt given raid set layout! */
2261 rs->raid_type = get_raid_type_by_ll(mddev->level, mddev->layout);
2268 struct raid_type *rt_cur = get_raid_type_by_ll(mddev->level, mddev->layout);
2279 DMERR("Reshaping raid sets not yet supported by metadata. (raid layout change keeping level)");
2280 if (mddev->layout != mddev->new_layout) {
2282 DMERR(" current layout %s vs new layout %s",
2285 DMERR(" current layout 0x%X vs new layout 0x%X",
2286 le32_to_cpu(sb->layout), mddev->new_layout);
2295 DMERR(" Old layout: %s w/ %u copies",
2296 raid10_md_layout_to_format(mddev->layout),
2297 raid10_md_layout_to_copies(mddev->layout));
2298 DMERR(" New layout: %s w/ %u copies",
2400 if (rs_is_raid10(rs) && __is_raid10_near(mddev->layout)) {
2401 if (mddev->raid_disks % __raid10_near_copies(mddev->layout) ||
2645 * Changing RAID layout or chunk size -> toggle offsets
2720 /* raid0 -> raid10_far layout */
2721 mddev->layout = raid10_format_to_md_layout(rs, ALGORITHM_RAID10_FAR,
2724 /* raid1 -> raid10_near layout */
2725 mddev->layout = raid10_format_to_md_layout(rs, ALGORITHM_RAID10_NEAR,
2760 __is_raid10_near(mddev->layout) &&
2762 rs->raid10_copies != __raid10_near_copies(mddev->layout)) {
2776 mddev->layout = raid10_format_to_md_layout(rs, ALGORITHM_RAID10_NEAR,
2778 mddev->new_layout = mddev->layout;
2830 * - change raid layout
2846 /* Ignore impossible layout change whilst adding/removing disks */
2848 mddev->layout != mddev->new_layout) {
2849 DMINFO("Ignoring invalid layout change with delta_disks=%d", rs->delta_disks);
2850 mddev->new_layout = mddev->layout;
2900 /* Change layout and/or chunk size */
2903 * Reshape layout (e.g. raid5_ls -> raid5_n) and/or chunk size:
2905 * keeping number of disks and do layout change ->
2916 * case of layout/chunksize change (for disk
2940 * at the end of a reshape but not (yet) reset the layout configuration
3075 * Backup any new raid set level, layout, ...
3106 /* Restore any requested new layout for conversion decision */
3289 /* Restore new, ctr requested layout to perform check */
3558 * changing the raid layout or the number of
3654 raid10_md_layout_to_copies(mddev->layout));
3657 raid10_md_layout_to_format(mddev->layout));