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authorMike Snitzer <snitzer@redhat.com>2009-12-10 23:52:22 +0000
committerAlasdair G Kergon <agk@redhat.com>2009-12-10 23:52:22 +0000
commit1d0f3ce83200edc5d43723c77c62b09ad6560294 (patch)
treedd7f0306c14334d8cb2fbcabe18243c94da4b869 /include
parent12fc0f49dc994d8d90dcf3df13f5b1ee5441288d (diff)
downloadop-kernel-dev-1d0f3ce83200edc5d43723c77c62b09ad6560294.zip
op-kernel-dev-1d0f3ce83200edc5d43723c77c62b09ad6560294.tar.gz
dm ioctl: retrieve status from inactive table
Add the flag DM_QUERY_INACTIVE_TABLE_FLAG to the ioctls to return infomation about the loaded-but-not-yet-active table instead of the live table. Prior to this patch it was impossible to obtain this information until the device had been 'resumed'. Userspace dmsetup and libdevmapper support the flag as of version 1.02.40. e.g. dmsetup info --inactive vg1-lv1 Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/dm-ioctl.h13
1 files changed, 10 insertions, 3 deletions
diff --git a/include/linux/dm-ioctl.h b/include/linux/dm-ioctl.h
index 2ab84c8..aa95508 100644
--- a/include/linux/dm-ioctl.h
+++ b/include/linux/dm-ioctl.h
@@ -1,6 +1,6 @@
/*
* Copyright (C) 2001 - 2003 Sistina Software (UK) Limited.
- * Copyright (C) 2004 - 2005 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004 - 2009 Red Hat, Inc. All rights reserved.
*
* This file is released under the LGPL.
*/
@@ -266,9 +266,9 @@ enum {
#define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl)
#define DM_VERSION_MAJOR 4
-#define DM_VERSION_MINOR 15
+#define DM_VERSION_MINOR 16
#define DM_VERSION_PATCHLEVEL 0
-#define DM_VERSION_EXTRA "-ioctl (2009-04-01)"
+#define DM_VERSION_EXTRA "-ioctl (2009-11-05)"
/* Status bits */
#define DM_READONLY_FLAG (1 << 0) /* In/Out */
@@ -309,4 +309,11 @@ enum {
*/
#define DM_NOFLUSH_FLAG (1 << 11) /* In */
+/*
+ * If set, any table information returned will relate to the inactive
+ * table instead of the live one. Always check DM_INACTIVE_PRESENT_FLAG
+ * is set before using the data returned.
+ */
+#define DM_QUERY_INACTIVE_TABLE_FLAG (1 << 12) /* In */
+
#endif /* _LINUX_DM_IOCTL_H */
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