File /proc/mdstat indicates a dying RAID device with an output section
such as
md3 : active raid1 sdg6[0]
871885632 blocks super 1.0 [2/1] [U_]
bitmap: 4/7 pages [16KB], 65536KB chunk
Note the [U-]. The "-" says /dev/sdh is dead. I would like to scan /proc/mdstat
and set a flag if [U-], [-U] or [--] occur. My current attempt is
#! /bin/bash -u
set -x
BAD=0;
while read L;
do if [[ $L == *"[U-]"* ]]; then B=1; fi;
if [[ $L == *"[-U]"* ]]; then B=1; fi;
if [[ $L == *"[--]"* ]]; then B=1; fi;
done < /proc/mdstat;
echo $BAD
Far from elegant, but I still can't get it to work.
The trace contains lines such as
+ 1164021 1164021 [4]read L
+ 1164021 1164021 [5][[ 20970368 blocks super 1.0 [2/1] [U_] == *\[\U\-\]* ]]
The test always fails, but I can't see why. Any hint would be very welcome.
Roger
