shaba/lvm2
1
0
Fork 0
mirror of git://sourceware.org/git/lvm2.git synced 2024-12-21 13:34:40 +03:00
Code Releases Activity

cleanup: stripes_extents

Browse Source 
Simplify calculation of extents rounding needed for
segment size.

Segment size has to divisible by 'extent count' needed to contain
whole stripe. LVM currently does not support stripes across segment.

In case the stripe size is bigger then extent size,
require bigger rounding.
This commit is contained in:
Zdenek Kabelac 2016-01-22 16:11:29 +01:00
parent 740d27f9fe
commit acf7815aca
1 changed files with 11 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
lib/metadata/lv_manip.c
View File

@ -4822,7 +4822,7 @@ static int _lvresize_adjust_extents(struct cmd_context *cmd, struct logical_volu
uint32_t seg_logical_extents;
uint32_t seg_physical_extents;
uint32_t area_multiple;
uint32_t stripesize_extents;
uint32_t stripes_extents;
uint32_t size_rest;
uint32_t existing_logical_extents = lv->le_count;
uint32_t existing_physical_extents, saved_existing_physical_extents;
@ -5053,22 +5053,24 @@ static int _lvresize_adjust_extents(struct cmd_context *cmd, struct logical_volu
return 0;
}
if (!(stripesize_extents = lp->stripe_size / vg->extent_size))
stripesize_extents = 1;
/* Segment size in extents must be divisible by stripes */
stripes_extents = lp->stripes;
if (lp->stripe_size > vg->extent_size)
/* Strip size is bigger then extent size needs more extents */
stripes_extents *= (lp->stripe_size / vg->extent_size);
size_rest = seg_size % (lp->stripes * stripesize_extents);
size_rest = seg_size % stripes_extents;
/* Round toward the original size. */
if (size_rest &&
((lp->extents < existing_logical_extents) ||
!lp->percent ||
(vg->free_count >= (lp->extents - existing_logical_extents - size_rest +
(lp->stripes * stripesize_extents))))) {
stripes_extents)))) {
log_print_unless_silent("Rounding size (%d extents) up to stripe "
"boundary size for segment (%d extents)",
lp->extents, lp->extents - size_rest +
(lp->stripes * stripesize_extents));
lp->extents = lp->extents - size_rest +
(lp->stripes * stripesize_extents);
lp->extents,
lp->extents - size_rest + stripes_extents);
lp->extents = lp->extents - size_rest + stripes_extents;
} else if (size_rest) {
log_print_unless_silent("Rounding size (%d extents) down to stripe "
"boundary size for segment (%d extents)",