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Fix up-convert when mirror activation is controled by volume_list and tags.

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When mirrors are up-converted, a transient mirror layer is put in so that
only the new devices are sync'ed.  That transient layer must carry the tags
of the original mirror LV, otherwise it will fail to activate when activation
is regulated by lvm.conf:activation/volume_list.  The conversion would then
fail.

The fix is to do exactly the same thing that is being done for linear ->
mirror converting (lib/metadata/mirror.c:_init_mirror_log()).  We copy the
tags temporarily for the new LV and remove them after the activation.
This commit is contained in:
Jonathan Earl Brassow 2012-05-05 02:08:46 +00:00
parent 8322deefee
commit 679f946dd9
3 changed files with 29 additions and 2 deletions
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1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.96 -
================================
Fix up-convert when mirror activation is controled by volume_list and tags.
Disallow snapshots of mirror segment type.
Fix bug in cmirror that caused incorrect status info to print on some nodes.
Remove statement that snapshots cannot be tagged from lvm man page.

16
lib/metadata/lv_manip.c
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@ -3682,9 +3682,10 @@ struct logical_volume *insert_layer_for_lv(struct cmd_context *cmd,
const char *layer_suffix)
{
int r;
struct logical_volume *layer_lv;
char *name;
size_t len;
struct str_list *sl;
struct logical_volume *layer_lv;
struct segment_type *segtype;
struct lv_segment *mapseg;
unsigned exclusive = 0;
@ -3722,6 +3723,14 @@ struct logical_volume *insert_layer_for_lv(struct cmd_context *cmd,
return NULL;
}
/* Temporary tags for activation of the transient LV */
dm_list_iterate_items(sl, &lv_where->tags)
if (!str_list_add(cmd->mem, &layer_lv->tags, sl->str)) {
log_error("Aborting. Unable to tag"
" transient mirror layer.");
return NULL;
}
if (!vg_write(lv_where->vg)) {
log_error("Failed to write intermediate VG %s metadata for mirror conversion.", lv_where->vg->name);
return NULL;
@ -3744,6 +3753,11 @@ struct logical_volume *insert_layer_for_lv(struct cmd_context *cmd,
name, lv_where->vg->name);
return NULL;
}
/* Remove the temporary tags */
dm_list_iterate_items(sl, &lv_where->tags)
str_list_del(&layer_lv->tags, sl->str);
}
log_very_verbose("Inserting layer %s for %s",

14
test/shell/lvconvert-mirror.sh
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@ -15,16 +15,28 @@ wait_for_mirror_in_sync_() {
while test $(get lv_field $1 copy_percent) != "100.00"; do sleep 1; done
}
# convert from linear to 2-way mirror
aux prepare_pvs 5 10
# FIXME - test fails with extent size < 512k
vgcreate -c n -s 512k $vg $(cat DEVICES)
# convert from linear to 2-way mirror
lvcreate -l2 -n $lv1 $vg "$dev1"
lvconvert -i1 -m+1 $vg/$lv1 "$dev2" "$dev3:0-1"
check mirror $vg $lv1 "$dev3"
lvremove -ff $vg
# convert from linear to 2-way mirror - with tags and volume_list (bz683270)
lvcreate -l2 -n $lv1 $vg --addtag hello
lvconvert -i1 -m+1 $vg/$lv1 \
--config 'activation { volume_list = [ "@hello" ] }'
lvremove -ff $vg
# convert from 2-way to 3-way mirror - with tags and volume_list (bz683270)
lvcreate -l2 -m1 -n $lv1 $vg --addtag hello
lvconvert -i1 -m+1 $vg/$lv1 \
--config 'activation { volume_list = [ "@hello" ] }'
lvremove -ff $vg
# convert from 2-way mirror to linear
lvcreate -l2 -m1 -n $lv1 $vg "$dev1" "$dev2" "$dev3:0-1"
lvconvert -m-1 $vg/$lv1