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thin: validate mapped size of thin volume

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Never show we map more then 100% for a volume.
But show warning when there could be some consistency problems.
This commit is contained in:
Zdenek Kabelac 2015-09-03 22:52:21 +02:00
parent a01eb9c451
commit df110bccbe
1 changed files with 9 additions and 0 deletions
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9
lib/thin/thin.c
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@ -620,6 +620,15 @@ static int _thin_target_percent(void **target_state __attribute__((unused)),
/* Pool allocates whole chunk so round-up to nearest one */ /* Pool allocates whole chunk so round-up to nearest one */
csize = first_seg(seg->pool_lv)->chunk_size; csize = first_seg(seg->pool_lv)->chunk_size;
csize = ((seg->lv->size + csize - 1) / csize) * csize; csize = ((seg->lv->size + csize - 1) / csize) * csize;
if (s->mapped_sectors > csize) {
log_warn("WARNING: LV %s maps %s while the size is only %s.",
display_lvname(seg->lv),
display_size(cmd, s->mapped_sectors),
display_size(cmd, csize));
/* Don't show nonsense numbers like i.e. 1000% full */
s->mapped_sectors = csize;
}
*percent = dm_make_percent(s->mapped_sectors, csize); *percent = dm_make_percent(s->mapped_sectors, csize);
*total_denominator += csize; *total_denominator += csize;
} else { } else {