Re: [PATCH 2/2] xfs_admin: pick up log arguments correctly

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On Tue, Apr 13, 2021 at 02:00:59PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
> 
> In commit ab9d8d69, we added support to xfs_admin to pass an external
> log to xfs_db and xfs_repair.  Unfortunately, we didn't do this
> correctly -- by appending the log arguments to DB_OPTS, we now guarantee
> an invocation of xfs_db when we don't have any work for it to do.
> 
> Brian Foster noticed that this results in xfs/764 hanging fstests
> because xfs_db (when not compiled with libeditline) will wait for input
> on stdin.  I didn't notice because my build includes libeditline and my
> test runner script does silly things with pipes such that xfs_db would
> exit immediately.
> 
> Reported-by: Brian Foster <bfoster@xxxxxxxxxx>
> Fixes: ab9d8d69 ("xfs_admin: support adding features to V5 filesystems")
> Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>

Doh, forgot to pick up the:
Reviewed-by: Eric Sandeen <sandeen@xxxxxxxxxx>

from last time. :(

--D

> ---
>  db/xfs_admin.sh |    9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> 
> diff --git a/db/xfs_admin.sh b/db/xfs_admin.sh
> index 916050cb..409975b2 100755
> --- a/db/xfs_admin.sh
> +++ b/db/xfs_admin.sh
> @@ -8,7 +8,7 @@ status=0
>  DB_OPTS=""
>  REPAIR_OPTS=""
>  REPAIR_DEV_OPTS=""
> -DB_LOG_OPTS=""
> +LOG_OPTS=""
>  USAGE="Usage: xfs_admin [-efjlpuV] [-c 0|1] [-L label] [-O v5_feature] [-r rtdev] [-U uuid] device [logdev]"
>  
>  while getopts "c:efjlL:O:pr:uU:V" c
> @@ -40,19 +40,18 @@ case $# in
>  	1|2)
>  		# Pick up the log device, if present
>  		if [ -n "$2" ]; then
> -			DB_OPTS=$DB_OPTS" -l '$2'"
> -			REPAIR_DEV_OPTS=$REPAIR_DEV_OPTS" -l '$2'"
> +			LOG_OPTS=" -l '$2'"
>  		fi
>  
>  		if [ -n "$DB_OPTS" ]
>  		then
> -			eval xfs_db -x -p xfs_admin $DB_OPTS "$1"
> +			eval xfs_db -x -p xfs_admin $LOG_OPTS $DB_OPTS "$1"
>  			status=$?
>  		fi
>  		if [ -n "$REPAIR_OPTS" ]
>  		then
>  			echo "Running xfs_repair to upgrade filesystem."
> -			eval xfs_repair $REPAIR_DEV_OPTS $REPAIR_OPTS "$1"
> +			eval xfs_repair $LOG_OPTS $REPAIR_DEV_OPTS $REPAIR_OPTS "$1"
>  			status=`expr $? + $status`
>  		fi
>  		;;
> 



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