lvextend progress

[marty199]

We're doing lvextend and it's extending. However how to know what extend progess it is., i.e. what percentage does current extending finish?

[sujit kumar singh · Accepted solution]

say that the lvname is /dev/vg12/lvol1


lvdisplay -v /dev/vg12/lvol1 | grep -i stale | wc -l


or

for i in /dev/vg12/lvol*
do
lvdisplay -v $i | grep -i stale | wc -l
done

and run this after a while, you should be able to see that the count of stale PEs should decrease

regards
sujit

[sujit kumar singh]

hi


lvdisplay -v /dev/vg12/lvol1| wc -l

gives the count of all the PEs of the LV
whereas

lvdisplay -v /dev/vg12/lvol1 | grep -i stale| wc -l

gives the number of PEs that have not been mirrored.

[James R. Ferguson]

Hi:

I assume you want to monitor a 'lvextend' operation to mirror a logical volume. Hence:

# cat ./mirrorpct
#!/usr/bin/sh
LV=$1
[ -b "${LV}" ] || { echo "'${LV}' isn't a LV path"; exit 1; }
typeset -i PC=0
while (( ${PC} < 100 ))
do
PC=$(lvdisplay -v ${LV}|awk '/current/{C++};/stale/{S++};END{printf "%.1f\n",C/(C+S)*100}')
echo "${PC}% complete"
[ ${PC} -ge 100 ] || sleep 15
done
exit 0

...run as:

# ./mirrorpct /dev/vgNN/lvolX

The script will continually report the percent mirrored until (or if) it reaches 100%.

Regards!

...JRF...