Gitweb:
https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=dee104668ea5b39518a...
Commit: dee104668ea5b39518a3a220d360d4624c3f3575
Parent: 02978e1f0135b75789669ee4042855b08f57f8b4
Author: Zdenek Kabelac <zkabelac(a)redhat.com>
AuthorDate: Tue Feb 9 22:31:31 2021 +0100
Committer: Zdenek Kabelac <zkabelac(a)redhat.com>
CommitterDate: Wed Feb 17 12:14:54 2021 +0100
snapshot: create origin of virtual snap read only
When creating old fashioned way thick virtual snapshot,
use read-only 'zero' _vorigin device.
---
lib/metadata/lv_manip.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/metadata/lv_manip.c b/lib/metadata/lv_manip.c
index 8dd3e7140..11fab6d7b 100644
--- a/lib/metadata/lv_manip.c
+++ b/lib/metadata/lv_manip.c
@@ -8273,7 +8273,7 @@ static struct logical_volume *_lv_create_an_lv(struct volume_group
*vg,
/* Create zero origin volume for spare snapshot */
if (lp->virtual_extents &&
!(origin_lv = _create_virtual_origin(cmd, vg, lv->name,
- lp->permission,
+ (lp->permission & ~LVM_WRITE),
lp->virtual_extents)))
goto revert_new_lv;