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204 lines
6.9 KiB
204 lines
6.9 KiB
commit 8aa13d867d8c707450bb1de1479e18a3bbbc324a |
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Author: Peter Rajnoha <prajnoha@redhat.com> |
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Date: Tue Dec 1 13:10:31 2015 +0100 |
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bz1274676 |
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--- |
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lib/activate/dev_manager.c | 11 ++++-- |
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libdm/.exported_symbols.Base | 1 - |
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libdm/.exported_symbols.DM_1_02_107 | 1 + |
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libdm/libdevmapper.h | 5 +++ |
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libdm/libdm-deptree.c | 25 ++++++++++++-- |
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test/shell/lvextend-thin-bz1274676.sh | 63 +++++++++++++++++++++++++++++++++++ |
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6 files changed, 100 insertions(+), 6 deletions(-) |
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diff --git a/lib/activate/dev_manager.c b/lib/activate/dev_manager.c |
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index c8e9589..e1f547f 100644 |
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--- a/lib/activate/dev_manager.c |
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+++ b/lib/activate/dev_manager.c |
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@@ -3277,7 +3277,7 @@ static int _tree_action(struct dev_manager *dm, const struct logical_volume *lv, |
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break; |
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case SUSPEND: |
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dm_tree_skip_lockfs(root); |
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- if (!dm->flush_required && lv_is_mirror(lv) && !lv_is_pvmove(lv)) |
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+ if (!dm->flush_required && !lv_is_pvmove(lv)) |
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dm_tree_use_no_flush_suspend(root); |
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/* Fall through */ |
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case SUSPEND_WITH_LOCKFS: |
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@@ -3296,7 +3296,14 @@ static int _tree_action(struct dev_manager *dm, const struct logical_volume *lv, |
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if (!dm_tree_preload_children(root, dlid, DLID_SIZE)) |
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goto_out; |
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- if (dm_tree_node_size_changed(root)) |
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+ if ((dm_tree_node_size_changed(root) < 0)) |
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+ dm->flush_required = 1; |
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+ |
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+ /* Currently keep the code require flush for any |
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+ * non 'thin pool/volume, mirror' or with any size change */ |
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+ if (!lv_is_thin_volume(lv) && |
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+ !lv_is_thin_pool(lv) && |
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+ (!lv_is_mirror(lv) || dm_tree_node_size_changed(root))) |
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dm->flush_required = 1; |
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if (action == ACTIVATE) { |
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diff --git a/libdm/.exported_symbols.Base b/libdm/.exported_symbols.Base |
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index f9c3cb1..27fef53 100644 |
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--- a/libdm/.exported_symbols.Base |
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+++ b/libdm/.exported_symbols.Base |
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@@ -262,7 +262,6 @@ dm_tree_node_set_thin_external_origin |
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dm_tree_node_set_thin_pool_discard |
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dm_tree_node_set_thin_pool_error_if_no_space |
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dm_tree_node_set_udev_flags |
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-dm_tree_node_size_changed |
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dm_tree_preload_children |
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dm_tree_retry_remove |
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dm_tree_set_cookie |
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diff --git a/libdm/.exported_symbols.DM_1_02_107 b/libdm/.exported_symbols.DM_1_02_107 |
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index 89d3464..0c7b7af 100644 |
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--- a/libdm/.exported_symbols.DM_1_02_107 |
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+++ b/libdm/.exported_symbols.DM_1_02_107 |
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@@ -13,3 +13,4 @@ dm_stats_create_region |
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dm_stats_driver_supports_histogram |
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dm_stats_get_histogram |
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dm_stats_get_region_nr_histogram_bins |
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+dm_tree_node_size_changed |
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diff --git a/libdm/libdevmapper.h b/libdm/libdevmapper.h |
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index 098fa85..8d4b096 100644 |
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--- a/libdm/libdevmapper.h |
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+++ b/libdm/libdevmapper.h |
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@@ -1252,6 +1252,11 @@ const char *dm_tree_node_get_name(const struct dm_tree_node *node); |
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const char *dm_tree_node_get_uuid(const struct dm_tree_node *node); |
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const struct dm_info *dm_tree_node_get_info(const struct dm_tree_node *node); |
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void *dm_tree_node_get_context(const struct dm_tree_node *node); |
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+/* |
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+ * Returns 0 when node size and its children is unchanged. |
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+ * Returns 1 when node or any of its children has increased size. |
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+ * Rerurns -1 when node or any of its children has reduced size. |
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+ */ |
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int dm_tree_node_size_changed(const struct dm_tree_node *dnode); |
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/* |
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diff --git a/libdm/libdm-deptree.c b/libdm/libdm-deptree.c |
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index fc79e33..0584079 100644 |
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--- a/libdm/libdm-deptree.c |
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+++ b/libdm/libdm-deptree.c |
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@@ -220,7 +220,7 @@ struct load_properties { |
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uint32_t read_ahead_flags; |
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unsigned segment_count; |
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- unsigned size_changed; |
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+ int size_changed; |
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struct dm_list segs; |
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const char *new_name; |
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@@ -2768,7 +2768,8 @@ static int _load_node(struct dm_tree_node *dnode) |
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existing_table_size = dm_task_get_existing_table_size(dmt); |
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if ((dnode->props.size_changed = |
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- (existing_table_size == seg_start) ? 0 : 1)) { |
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+ (existing_table_size == seg_start) ? 0 : |
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+ (existing_table_size > seg_start) ? -1 : 1)) { |
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/* |
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* Kernel usually skips size validation on zero-length devices |
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* now so no need to preload them. |
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@@ -2864,8 +2865,10 @@ int dm_tree_preload_children(struct dm_tree_node *dnode, |
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} |
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/* Propagate device size change change */ |
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- if (child->props.size_changed) |
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+ if (child->props.size_changed > 0 && !dnode->props.size_changed) |
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dnode->props.size_changed = 1; |
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+ else if (child->props.size_changed < 0) |
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+ dnode->props.size_changed = -1; |
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/* Resume device immediately if it has parents and its size changed */ |
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if (!dm_tree_node_num_children(child, 1) || !child->props.size_changed) |
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@@ -4190,3 +4193,19 @@ void dm_tree_node_set_callback(struct dm_tree_node *dnode, |
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dnode->callback = cb; |
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dnode->callback_data = data; |
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} |
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+ |
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+/* |
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+ * Backward compatible dm_tree_node_size_changed() implementations. |
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+ * |
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+ * Keep these at the end of the file to avoid adding clutter around the |
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+ * current dm_tree_node_size_changed() version. |
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+ */ |
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+#if defined(__GNUC__) |
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+int dm_tree_node_size_changed_base(const struct dm_tree_node *dnode); |
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+DM_EXPORT_SYMBOL_BASE(dm_tree_node_size_changed); |
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+int dm_tree_node_size_changed_base(const struct dm_tree_node *dnode) |
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+{ |
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+ /* Base does not make difference between smaller and bigger */ |
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+ return dm_tree_node_size_changed(dnode) ? 1 : 0; |
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+} |
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+#endif |
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diff --git a/test/shell/lvextend-thin-bz1274676.sh b/test/shell/lvextend-thin-bz1274676.sh |
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new file mode 100644 |
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index 0000000..facace0 |
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--- /dev/null |
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+++ b/test/shell/lvextend-thin-bz1274676.sh |
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@@ -0,0 +1,63 @@ |
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+#!/bin/bash |
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+# Copyright (C) 2015 Red Hat, Inc. All rights reserved. |
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+# |
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+# This copyrighted material is made available to anyone wishing to use, |
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+# modify, copy, or redistribute it subject to the terms and conditions |
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+# of the GNU General Public License v.2. |
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+# |
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+# You should have received a copy of the GNU General Public License |
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+# along with this program; if not, write to the Free Software Foundation, |
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+# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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+ |
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+# ensure there is no data loss during thin-pool resize |
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+ |
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+export LVM_TEST_THIN_REPAIR_CMD=${LVM_TEST_THIN_REPAIR_CMD-/bin/false} |
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+ |
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+. lib/inittest |
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+ |
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+test -e LOCAL_LVMPOLLD && skip |
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+ |
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+which md5sum || skip |
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+ |
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+aux have_thin 1 0 0 || skip |
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+ |
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+aux prepare_pvs 2 20 |
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+ |
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+vgcreate -s 512K $vg $(< DEVICES) |
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+ |
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+lvcreate -L1M -V2M -n $lv1 -T $vg/pool |
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+ |
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+# just ensure we check what we need to check |
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+check lv_field $vg/pool size "1.00m" |
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+check lv_field $vg/$lv1 size "2.00m" |
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+ |
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+# prepare 2097152 file content |
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+seq 0 315465 > 2M |
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+md5sum 2M | cut -f 1 -d ' ' | tee MD5 |
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+dd if=2M of="$DM_DEV_DIR/mapper/$vg-$lv1" bs=512K conv=fdatasync 2>&1 >log & |
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+#dd if=2M of="$DM_DEV_DIR/mapper/$vg-$lv1" bs=2M oflag=direct & |
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+ |
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+# give it some time to fill thin-volume |
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+# eventually loop to wait for 100% full pool... |
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+sleep .1 |
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+lvs -a $vg |
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+ |
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+# this must not 'block & wait' on suspending flush |
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+# if it waits on thin-pool's target timeout |
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+# it will harm queued data |
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+lvextend -L+512k $vg/pool |
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+lvextend -L+512k $vg/pool |
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+ |
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+# collect 'dd' result |
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+wait |
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+cat log |
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+ |
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+lvs -a $vg |
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+ |
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+dd if="$DM_DEV_DIR/mapper/$vg-$lv1" of=2M-2 iflag=direct |
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+md5sum 2M-2 | cut -f 1 -d ' ' | tee MD5-2 |
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+ |
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+# these 2 are supposed to match |
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+diff MD5 MD5-2 |
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+ |
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+vgremove -f $vg
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