[dm-devel] [PATCH 26/78] 11-dm-mpath.rules: Import blkid values if all paths are down

[Benjamin Marzinski]

On Mon, Mar 16, 2015 at 01:36:13PM +0100, Hannes Reinecke wrote:
> When all paths are failed we should not try to run any programs
> requiring disk access. However, we still need to create the
> symlinks so as not to confuse systemd.
> So import the blkid values from the database in these cases.

Don't we still need to set DM_NOSCAN here?

-Ben

> 
> Signed-off-by: Hannes Reinecke <hare at suse.de>
> ---
>  multipath/11-dm-mpath.rules | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/multipath/11-dm-mpath.rules b/multipath/11-dm-mpath.rules
> index 69c24b5..2e7076d 100644
> --- a/multipath/11-dm-mpath.rules
> +++ b/multipath/11-dm-mpath.rules
> @@ -6,7 +6,13 @@ ENV{DM_UUID}!="mpath-?*", GOTO="mpath_end"
>  # otherwise there would be a hang or IO error on access.
>  # We'd like to avoid this, especially within udev processing.
>  ENV{DM_NR_VALID_PATHS}!="?*", IMPORT{db}="DM_NR_VALID_PATHS"
> -ENV{DM_NR_VALID_PATHS}=="0", ENV{DM_NOSCAN}="1"
> +ENV{DM_NR_VALID_PATHS}!="0", GOTO="mpath_blkid_end"
> +IMPORT{db}="ID_FS_TYPE"
> +IMPORT{db}="ID_FS_USAGE"
> +IMPORT{db}="ID_FS_UUID"
> +IMPORT{db}="ID_FS_UUID_ENC"
> +IMPORT{db}="ID_FS_VERSION"
> +LABEL="mpath_blkid_end"
>  
>  # Also skip all foreign rules if no path is available.
>  # Remember the original value of DM_DISABLE_OTHER_RULES_FLAG
> -- 
> 1.8.4.5