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lv_manip: improve should_wipe reporting

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We want to print smarter warning message only when
the zeroing was not provided on the first zeroable segment
of newly created LV.

Put warning within _should_wipe_lv function to avoid reevaluation
of same conditions twice.
This commit is contained in:
Zdenek Kabelac 2014-10-22 13:29:25 +02:00
parent 2fc403b0fc
commit be3f666ef3
2 changed files with 26 additions and 15 deletions
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1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.112 -
=====================================
Improve _should_wipe_lv() to warn with message.
Inform about temporarily created volumes only in verbose mode.
Better support for --test mode with pool creation.
Query lock holding LV when replacing and converting raid volumes.

40
lib/metadata/lv_manip.c
View File

@ -6530,14 +6530,31 @@ int lv_activation_skip(struct logical_volume *lv, activation_change_t activate,
return 1;
}
static int _should_wipe_lv(struct lvcreate_params *lp, struct logical_volume *lv) {
int r = lp->zero | lp->wipe_signatures;
static int _should_wipe_lv(struct lvcreate_params *lp,
struct logical_volume *lv, int warn)
{
/* Unzeroable segment */
if (first_seg(lv)->segtype->flags & SEG_CANNOT_BE_ZEROED)
return 0;
if (!seg_is_thin(lp) && !seg_is_cache_pool(lp))
return r;
/* Thin snapshot need not to be zeroed */
/* Thin pool with zeroing doesn't need zeroing or wiping */
if (lv_is_thin_volume(lv) &&
(first_seg(lv)->origin ||
first_seg(first_seg(lv)->pool_lv)->zero_new_blocks))
return 0;
if (lv_is_thin_volume(lv))
return r && !lp->snapshot && !first_seg(first_seg(lv)->pool_lv)->zero_new_blocks;
/* Cannot zero read-only volume */
if ((lv->status & LVM_WRITE) &&
(lp->zero || lp->wipe_signatures))
return 1;
if (warn && (!lp->zero || !(lv->status & LVM_WRITE)))
log_warn("WARNING: Logical volume %s not zeroed.",
display_lvname(lv));
if (warn && (!lp->wipe_signatures || !(lv->status & LVM_WRITE)))
log_verbose("Signature wiping on logical volume %s not requested.",
display_lvname(lv));
return 0;
}
@ -7017,7 +7034,7 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg,
}
/* Do not scan this LV until properly zeroed/wiped. */
if (_should_wipe_lv(lp, lv))
if (_should_wipe_lv(lp, lv, 0))
lv->status |= LV_NOSCAN;
if (lp->temporary)
@ -7073,14 +7090,7 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group *vg,
return NULL;
}
if (!seg_is_thin(lp) && !lp->snapshot) {
if (!lp->zero)
log_warn("WARNING: \"%s/%s\" not zeroed", lv->vg->name, lv->name);
if (!lp->wipe_signatures)
log_verbose("Signature wiping on \"%s/%s\" not requested", lv->vg->name, lv->name);
}
if (_should_wipe_lv(lp, lv)) {
if (_should_wipe_lv(lp, lv, 1)) {
if (!wipe_lv(lv, (struct wipe_params)
{
.do_zero = lp->zero,