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enterprise-storage: fix setting read_ahead_kb

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Signed-off-by: Jarod Wilson <jarod@redhat.com>
This commit is contained in:
Jarod Wilson 2010-08-18 09:59:54 -04:00
parent bdce7eb69d
commit a0222d7fcb
1 changed files with 6 additions and 4 deletions
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10
tune-profiles/enterprise-storage/ktune.sh
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@ -59,9 +59,10 @@ start() {
done
# Increase the readahead value on all volumes
for d in /sys/block/{sd,cciss}*/queue/read_ahead_kb
readaheadvols=$(ls /sys/block/{sd,cciss}*/queue/read_ahead_kb 2>/dev/null)
for d in $readaheadvols
do
echo 512 > $d > /dev/null 2>&1
(echo 512 > $d) > /dev/null 2>&1
done
return 0
@ -116,9 +117,10 @@ stop() {
done
# Reset default readahead value on all volumes
for d in /sys/block/{sd,cciss}*/queue/read_ahead_kb
readaheadvols=$(ls /sys/block/{sd,cciss}*/queue/read_ahead_kb 2>/dev/null)
for d in $readaheadvols
do
echo 128 > $d > /dev/null 2>&1
(echo 128 > $d) > /dev/null 2>&1
done
return 0