Troubleshooting
Problem
customer added new LUN to extend existing logical volume, however, it failed to extend.
Symptom
When ran lvextend command, it failed with error message as follow
# lvextend vg/stripe1 -L 406G
Using stripesize of last segment 64.00 KB
Extending logical volume stripe1 to 406.00 GB
Insufficient suitable allocatable extents for logical volume stripe1: 34480
more required
Cause
The existing logical volume was created with stripe, so in order to extend with stripe feature, newly added LUN should be the same size with existing logical volume.
Diagnosing The Problem
run command as follow to check if VFree size has the same size with existing logical volume
# vgs
VG #PV #LV #SN Attr VSize VFree
vg 3 1 0 wz--n- 406.97G 135.66G
Resolving The Problem
There are two solutions
1. request customer to add more LUN so that newly added LUN matches exiting logical volume size in this example, Vsize 406.97 and Vfree 135.66G, so exiting size is 406.97-135.66=271.31G. Customer need to add 271.31-135.66=135.65G more.
2. extend LVM without stripe feature as follow
# lvextend -i1 -l+100%FREE vg/stripe1
Related Information
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Document Information
Modified date:
17 October 2019
UID
swg21971084