81 lines
2.8 KiB
Diff
81 lines
2.8 KiB
Diff
From f7f73025679c5d001256d87bc47566d1db4e98c7 Mon Sep 17 00:00:00 2001
|
|
From: Kevin Wolf <kwolf@redhat.com>
|
|
Date: Tue, 4 Feb 2025 22:13:53 +0100
|
|
Subject: [PATCH 09/23] block: Allow inactivating already inactive nodes
|
|
|
|
RH-Author: Kevin Wolf <kwolf@redhat.com>
|
|
RH-MergeRequest: 339: QMP command for block device reactivation after migration
|
|
RH-Jira: RHEL-54296 RHEL-78397
|
|
RH-Acked-by: Eric Blake <eblake@redhat.com>
|
|
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
RH-Commit: [8/22] 781a749ae61e038b5b562407b01d53a1bfba598c (kmwolf/centos-qemu-kvm)
|
|
|
|
What we wanted to catch with the assertion is cases where the recursion
|
|
finds that a child was inactive before its parent. This should never
|
|
happen. But if the user tries to inactivate an image that is already
|
|
inactive, that's harmless and we don't want to fail the assertion.
|
|
|
|
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
|
Acked-by: Fabiano Rosas <farosas@suse.de>
|
|
Reviewed-by: Eric Blake <eblake@redhat.com>
|
|
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
Message-ID: <20250204211407.381505-3-kwolf@redhat.com>
|
|
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
|
(cherry picked from commit a6490ec9d56b9e95a13918813585a3a9891710bc)
|
|
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
|
---
|
|
block.c | 16 ++++++++++++----
|
|
1 file changed, 12 insertions(+), 4 deletions(-)
|
|
|
|
diff --git a/block.c b/block.c
|
|
index c94d78eefd..a2aa454312 100644
|
|
--- a/block.c
|
|
+++ b/block.c
|
|
@@ -6959,7 +6959,8 @@ bdrv_has_bds_parent(BlockDriverState *bs, bool only_active)
|
|
return false;
|
|
}
|
|
|
|
-static int GRAPH_RDLOCK bdrv_inactivate_recurse(BlockDriverState *bs)
|
|
+static int GRAPH_RDLOCK
|
|
+bdrv_inactivate_recurse(BlockDriverState *bs, bool top_level)
|
|
{
|
|
BdrvChild *child, *parent;
|
|
int ret;
|
|
@@ -6977,7 +6978,14 @@ static int GRAPH_RDLOCK bdrv_inactivate_recurse(BlockDriverState *bs)
|
|
return 0;
|
|
}
|
|
|
|
- assert(!(bs->open_flags & BDRV_O_INACTIVE));
|
|
+ /*
|
|
+ * Inactivating an already inactive node on user request is harmless, but if
|
|
+ * a child is already inactive before its parent, that's bad.
|
|
+ */
|
|
+ if (bs->open_flags & BDRV_O_INACTIVE) {
|
|
+ assert(top_level);
|
|
+ return 0;
|
|
+ }
|
|
|
|
/* Inactivate this node */
|
|
if (bs->drv->bdrv_inactivate) {
|
|
@@ -7014,7 +7022,7 @@ static int GRAPH_RDLOCK bdrv_inactivate_recurse(BlockDriverState *bs)
|
|
|
|
/* Recursively inactivate children */
|
|
QLIST_FOREACH(child, &bs->children, next) {
|
|
- ret = bdrv_inactivate_recurse(child->bs);
|
|
+ ret = bdrv_inactivate_recurse(child->bs, false);
|
|
if (ret < 0) {
|
|
return ret;
|
|
}
|
|
@@ -7039,7 +7047,7 @@ int bdrv_inactivate_all(void)
|
|
if (bdrv_has_bds_parent(bs, false)) {
|
|
continue;
|
|
}
|
|
- ret = bdrv_inactivate_recurse(bs);
|
|
+ ret = bdrv_inactivate_recurse(bs, true);
|
|
if (ret < 0) {
|
|
bdrv_next_cleanup(&it);
|
|
break;
|
|
--
|
|
2.48.1
|
|
|