LVM mirror attempt results in "Insufficient free space"
- by MattK
Attempting to add a disk to mirror an LVM volume on CentOS 7 always fails with "Insufficient free space: 1 extents needed, but only 0 available". Having searched for a solution, I have tried specifying disks, multiple logging options, adding 3rd log partition, but have not found a solution
Not sure if I am making a rookie mistake, or there is something more subtle wrong (I am more familiar with ZFS, new to using LVM):
# lvconvert -m1 centos_bi/home
Insufficient free space: 1 extents needed, but only 0 available
# lvconvert -m1 --corelog centos_bi/home
Insufficient free space: 1 extents needed, but only 0 available
# lvconvert -m1 --corelog --alloc anywhere centos_bi/home
Insufficient free space: 1 extents needed, but only 0 available
# lvconvert -m1 --mirrorlog mirrored --alloc anywhere centos_bi/home /dev/sda2
Insufficient free space: 1 extents needed, but only 0 available
# lvconvert -m1 --corelog --alloc anywhere centos_bi/home /dev/sdi2 /dev/sda2
Insufficient free space: 1 extents needed, but only 0 available
The two disks are of the same size, and have identical partition layouts via "sfdisk -d /dev/sdi part_table; sfdisk /dev/sda < part_table". The current configuration is detailed below.
# pvs
PV VG Fmt Attr PSize PFree
/dev/sda1 centos_bi lvm2 a-- 496.00m 496.00m
/dev/sda2 centos_bi lvm2 a-- 465.27g 465.27g
/dev/sdi2 centos_bi lvm2 a-- 465.27g 0
# vgs
VG #PV #LV #SN Attr VSize VFree
centos_bi 3 3 0 wz--n- 931.02g 465.75g
# lvs -a -o +devices
LV VG Attr LSize Pool Origin Data% Move Log Cpy%Sync Convert Devices
home centos_bi -wi-ao---- 391.64g /dev/sdi2(6050)
root centos_bi -wi-ao---- 50.00g /dev/sdi2(106309)
swap centos_bi -wi-ao---- 23.63g /dev/sdi2(0)
# pvdisplay
--- Physical volume ---
PV Name /dev/sdi2
VG Name centos_bi
PV Size 465.27 GiB / not usable 3.00 MiB
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 119109
Free PE 0
Allocated PE 119109
--- Physical volume ---
PV Name /dev/sda2
VG Name centos_bi
PV Size 465.27 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 119109
Free PE 119109
Allocated PE 0
--- Physical volume ---
PV Name /dev/sda1
VG Name centos_bi
PV Size 500.00 MiB / not usable 4.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 124
Free PE 124
Allocated PE 0
# vgdisplay
--- Volume group ---
VG Name centos_bi
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 10
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 3
Act PV 3
VG Size 931.02 GiB
PE Size 4.00 MiB
Total PE 238342
Alloc PE / Size 119109 / 465.27 GiB
Free PE / Size 119233 / 465.75 GiB
# lvdisplay
--- Logical volume ---
LV Path /dev/centos_bi/swap
LV Name swap
VG Name centos_bi
LV Write Access read/write
LV Creation host, time localhost, 2014-08-07 16:34:34 -0400
LV Status available
# open 2
LV Size 23.63 GiB
Current LE 6050
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Path /dev/centos_bi/home
LV Name home
VG Name centos_bi
LV Write Access read/write
LV Creation host, time localhost, 2014-08-07 16:34:35 -0400
LV Status available
# open 1
LV Size 391.64 GiB
Current LE 100259
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
--- Logical volume ---
LV Path /dev/centos_bi/root
LV Name root
VG Name centos_bi
LV Write Access read/write
LV Creation host, time localhost, 2014-08-07 16:34:37 -0400
LV Status available
# open 1
LV Size 50.00 GiB
Current LE 12800
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
