[linux-lvm] not enough free/allocatable physical extents to extend logical volume

[Ron Arts]

Hello,

Am I making some stupid mistake here?
I want to extend the space on /dev/vg1/mysql on physical volume /dev/sdb4

The command I tried is:

[root at cms-db root]# lvextend -L +50G /dev/vg1/mysql /dev/sdb4
lvextend -- extending logical volume "/dev/vg1/mysql" to 100 GB
lvextend -- not enough free/allocatable physical extents to extend logical volume "/dev/vg1/mysql"

But pvdisplay says there should be enough PE there:

[root at cms-db root]# pvdisplay /dev/sdb4
--- Physical volume ---
PV Name               /dev/sdb4
VG Name               vg1
PV Size               108.92 GB [228428235 secs] / NOT usable 4.25 MB [LVM: 236 KB]
PV#                   1
PV Status             available
Allocatable           yes
Cur LV                2
PE Size (KByte)       4096
Total PE              27883
Free PE               18358
Allocated PE          9525
PV UUID               C7C5NM-PpaJ-hSbj-jPqn-f1TF-mvuQ-M7a70T

lvdisplay says the following:

[root at cms-db root]# lvdisplay /dev/vg1/mysql
--- Logical volume ---
LV Name                /dev/vg1/mysql
VG Name                vg1
LV Write Access        read/write
LV Status              available
LV #                   1
# open                 1
LV Size                50 GB
Current LE             12800
Allocated LE           12800
Stripes                2
Stripe size (KByte)    16
Allocation             next free
Read ahead sectors     10000
Block device           58:0


According to the FAQ I should not specify the physical volume, and when
I tried that it worked, but now O don't know where my space is allocated.

Ron Arts

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