0d02d6c2e3
- lvm2 should use 'external_device_info_source="udev"' by default (bsc#1179691)
- add SUSE special patch to void issues in non udev env
+ bug-1179691_config-set-external_device_info_source-none.patch
OBS-URL: https://build.opensuse.org/request/show/868503
OBS-URL: https://build.opensuse.org/package/show/Base:System/lvm2?expand=0&rev=292
67 lines
2.8 KiB
Diff
67 lines
2.8 KiB
Diff
From: Martin Wilck <mwilck@suse.com>
|
|
Subject: [PATCH] config: set external_device_info_source=none if udev isn't running
|
|
Date: Wed, 27 Jan 2021 18:28:59 +0100
|
|
Message-Id: <20210127172859.956-1-mwilck@suse.com>
|
|
|
|
LVM2 has several configuration options related to device detection
|
|
and udev. In particular, we have obtain_device_list_from_udev=(0|1)
|
|
and external_device_info_source=("none"|"udev"). The two options are
|
|
obviously semantically related, but it's rather unclear if and how
|
|
they interact.
|
|
|
|
If udev is unavailable, e.g. in containers, obtain_device_list_from_udev
|
|
(which defaults to 1) will be automatically reset to 0. However,
|
|
if external_device_info_source="udev" is set, this setting is not
|
|
reset to "none", leading to error messages like
|
|
|
|
Udev database has incomplete information about device /dev/vda.
|
|
/dev/vda: Failed to get external handle [udev].
|
|
|
|
This patch changes that, treating external_device_info_source the
|
|
same way as obtain_device_list_from_udev, thereby making LVM2's
|
|
device detection more consistent.
|
|
|
|
The default for external_device_info_source is "none", but I believe
|
|
there are very good reasons to change this setting to "udev", because
|
|
LVM will get detection of multipath and md devices wrong most of the
|
|
time otherwise. LVM should follow the same logic as systemd and other
|
|
system components with respect to device detection.
|
|
|
|
Signed-off-by: Martin Wilck <mwilck@suse.com>
|
|
Signed-off-by: Heming Zhao <heming.zhao@suse.com>,
|
|
---
|
|
lib/commands/toolcontext.c | 17 ++++++++++++++---
|
|
1 file changed, 14 insertions(+), 3 deletions(-)
|
|
|
|
diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c
|
|
index 63b6811..55f6806 100644
|
|
--- a/lib/commands/toolcontext.c
|
|
+++ b/lib/commands/toolcontext.c
|
|
@@ -598,9 +598,20 @@ static int _process_config(struct cmd_context *cmd)
|
|
dev_ext_info_src = find_config_tree_str(cmd, devices_external_device_info_source_CFG, NULL);
|
|
if (dev_ext_info_src && !strcmp(dev_ext_info_src, "none"))
|
|
init_external_device_info_source(DEV_EXT_NONE);
|
|
- else if (dev_ext_info_src && !strcmp(dev_ext_info_src, "udev"))
|
|
- init_external_device_info_source(DEV_EXT_UDEV);
|
|
- else {
|
|
+ else if (dev_ext_info_src && !strcmp(dev_ext_info_src, "udev")) {
|
|
+ /*
|
|
+ * Override existing config and hardcode external_device_info_source==none if:
|
|
+ * - udev is not running
|
|
+ * - udev is disabled using DM_DISABLE_UDEV environment variable
|
|
+ * See also treatment of obtain_device_list_from_udev in _init_dev_cache()
|
|
+ */
|
|
+ if (udev_is_running())
|
|
+ init_external_device_info_source(DEV_EXT_UDEV);
|
|
+ else {
|
|
+ log_notice("udev is not running. Using external_device_info_source==none");
|
|
+ init_external_device_info_source(DEV_EXT_NONE);
|
|
+ }
|
|
+ } else {
|
|
log_error("Invalid external device info source specification.");
|
|
return 0;
|
|
}
|
|
--
|
|
2.29.2
|
|
|