[Centos] mirroring with LVM?

Gordon McLellan gordonthree at gmail.com
Sun Aug 17 13:50:20 UTC 2008


I'm pulling my hair out trying to setup a mirrored logical volume.

lvconvert tells me I don't have enough free space, even though I have
hundreds of gigabytes free on both physical volumes.

Command: lvconvert -m1 /dev/vg1/iscsi_deeds_data
Insufficient suitable allocatable extents for logical volume : 10240
more required

Any ideas?

Thanks!,

Gordon

Here's the output from the lvconvert with verbose and debugging turned on:

# lvconvert -vvv -d -m1 /dev/vg1/iscsi_deeds_data
       Processing: lvconvert -vvv -d -m1 /dev/vg1/iscsi_deeds_data
       O_DIRECT will be used
     Setting global/locking_type to 1
     File-based locking selected.
     Setting global/locking_dir to /var/lock/lvm
     Setting activation/mirror_region_size to 512
     Getting target version for linear
       dm version   OF   [16384]
       dm versions   OF   [16384]
     Getting target version for striped
       dm versions   OF   [16384]
   Checking for existing volume group "vg1"
     Locking /var/lock/lvm/V_vg1 WB
       /dev/ramdisk: Not using O_DIRECT
       Opened /dev/ramdisk RW
       /dev/ramdisk: block size is 1024 bytes
     /dev/ramdisk: No label detected
       Closed /dev/ramdisk
       Opened /dev/md0 RW O_DIRECT
       /dev/md0: block size is 1024 bytes
     /dev/md0: No label detected
       Closed /dev/md0
       Opened /dev/root RW O_DIRECT
       /dev/root: block size is 4096 bytes
     /dev/root: No label detected
       Closed /dev/root
       /dev/ram: Not using O_DIRECT
       Opened /dev/ram RW
       /dev/ram: block size is 1024 bytes
     /dev/ram: No label detected
       Closed /dev/ram
       Opened /dev/md1 RW O_DIRECT
       /dev/md1: block size is 4096 bytes
     /dev/md1: No label detected
       Closed /dev/md1
       Opened /dev/dm-1 RW O_DIRECT
       /dev/dm-1: block size is 4096 bytes
     /dev/dm-1: No label detected
       Closed /dev/dm-1
       /dev/ram2: Not using O_DIRECT
       Opened /dev/ram2 RW
       /dev/ram2: block size is 1024 bytes
     /dev/ram2: No label detected
       Closed /dev/ram2
       Opened /dev/md2 RW O_DIRECT
       /dev/md2: block size is 4096 bytes
     /dev/md2: lvm2 label detected
       lvmcache: /dev/md2: now orphaned
       /dev/md2: Found metadata at 8192 size 872 for vg0
(lRcg12-Pt0L-NYUv-zJfF-GT62-UKnP-VmhtD0)
       lvmcache: /dev/md2: now in VG vg0
       lvmcache: /dev/md2: setting vg0 VGID to lRcg12Pt0LNYUvzJfFGT62UKnPVmhtD0
       lvmcache: /dev/md2: VG vg0: Set creation host to incognito.mcch.org.
       Closed /dev/md2
       Opened /dev/dm-2 RW O_DIRECT
       /dev/dm-2: block size is 4096 bytes
     /dev/dm-2: No label detected
       Closed /dev/dm-2
       /dev/ram3: Not using O_DIRECT
       Opened /dev/ram3 RW
       /dev/ram3: block size is 1024 bytes
     /dev/ram3: No label detected
       Closed /dev/ram3
       Opened /dev/dm-3 RW O_DIRECT
       /dev/dm-3: block size is 4096 bytes
     /dev/dm-3: No label detected
       Closed /dev/dm-3
       /dev/ram4: Not using O_DIRECT
       Opened /dev/ram4 RW
       /dev/ram4: block size is 1024 bytes
     /dev/ram4: No label detected
       Closed /dev/ram4
       Opened /dev/sda4 RW O_DIRECT
       /dev/sda4: block size is 512 bytes
     /dev/sda4: lvm2 label detected
       lvmcache: /dev/sda4: now orphaned
       /dev/sda4: Found metadata at 18432 size 1715 for vg1
(rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA)
       lvmcache: /dev/sda4: now in VG vg1
       lvmcache: /dev/sda4: setting vg1 VGID to
rthUcYKiTwzqwYWgg7rG54wTmZUYY6zA
       lvmcache: /dev/sda4: VG vg1: Set creation host to incognito.mcch.org.
       /dev/ram5: Not using O_DIRECT
       Opened /dev/ram5 RW
       /dev/ram5: block size is 1024 bytes
     /dev/ram5: No label detected
       Closed /dev/ram5
       /dev/ram6: Not using O_DIRECT
       Opened /dev/ram6 RW
       /dev/ram6: block size is 1024 bytes
     /dev/ram6: No label detected
       Closed /dev/ram6
       /dev/ram7: Not using O_DIRECT
       Opened /dev/ram7 RW
       /dev/ram7: block size is 1024 bytes
     /dev/ram7: No label detected
       Closed /dev/ram7
       /dev/ram8: Not using O_DIRECT
       Opened /dev/ram8 RW
       /dev/ram8: block size is 1024 bytes
     /dev/ram8: No label detected
       Closed /dev/ram8
       /dev/ram9: Not using O_DIRECT
       Opened /dev/ram9 RW
       /dev/ram9: block size is 1024 bytes
     /dev/ram9: No label detected
       Closed /dev/ram9
       /dev/ram10: Not using O_DIRECT
       Opened /dev/ram10 RW
       /dev/ram10: block size is 1024 bytes
     /dev/ram10: No label detected
       Closed /dev/ram10
       /dev/ram11: Not using O_DIRECT
       Opened /dev/ram11 RW
       /dev/ram11: block size is 1024 bytes
     /dev/ram11: No label detected
       Closed /dev/ram11
       /dev/ram12: Not using O_DIRECT
       Opened /dev/ram12 RW
       /dev/ram12: block size is 1024 bytes
     /dev/ram12: No label detected
       Closed /dev/ram12
       /dev/ram13: Not using O_DIRECT
       Opened /dev/ram13 RW
       /dev/ram13: block size is 1024 bytes
     /dev/ram13: No label detected
       Closed /dev/ram13
       /dev/ram14: Not using O_DIRECT
       Opened /dev/ram14 RW
       /dev/ram14: block size is 1024 bytes
     /dev/ram14: No label detected
       Closed /dev/ram14
       /dev/ram15: Not using O_DIRECT
       Opened /dev/ram15 RW
       /dev/ram15: block size is 1024 bytes
     /dev/ram15: No label detected
       Closed /dev/ram15
       Opened /dev/sdb4 RW O_DIRECT
       /dev/sdb4: block size is 512 bytes
     /dev/sdb4: lvm2 label detected
       lvmcache: /dev/sdb4: now orphaned
       /dev/sdb4: Found metadata at 4608 size 1715 for vg1
(rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA)
       lvmcache: /dev/sdb4: now in VG vg1 (rthUcYKiTwzqwYWgg7rG54wTmZUYY6zA)
       Opened /dev/sdc1 RW O_DIRECT
       /dev/sdc1: block size is 1024 bytes
     /dev/sdc1: No label detected
       Closed /dev/sdc1
     /dev/sda4: lvm2 label detected
       /dev/sda4: Found metadata at 18432 size 1715 for vg1
(rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA)
     /dev/sdb4: lvm2 label detected
       /dev/sdb4: Found metadata at 4608 size 1715 for vg1
(rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA)
     /dev/sda4: lvm2 label detected
       /dev/sda4: Found metadata at 18432 size 1715 for vg1
(rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA)
     /dev/sdb4: lvm2 label detected
       /dev/sdb4: Found metadata at 4608 size 1715 for vg1
(rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA)
       Read vg1 metadata (10) from /dev/sda4 at 18432 size 1715
     /dev/sda4: lvm2 label detected
       /dev/sda4: Found metadata at 18432 size 1715 for vg1
(rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA)
     /dev/sdb4: lvm2 label detected
       /dev/sdb4: Found metadata at 4608 size 1715 for vg1
(rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA)
       Read vg1 metadata (10) from /dev/sdb4 at 4608 size 1715
       /dev/sda4 0:      0  15360: virt(0:0)
       /dev/sda4 1:  15360  10240: opadata(0:0)
       /dev/sda4 2:  25600  10240: iscsi_deeds_data(0:0)
       /dev/sda4 3:  35840  23040: virt(15360:0)
       /dev/sda4 4:  58880 160513: NULL(0:0)
       /dev/sdb4 0:      0 219393: NULL(0:0)
   Archiving volume group "vg1" metadata (seqno 10).
     Expiring archive /etc/lvm/archive/vg1_00005.vg
       Allowing allocation on /dev/sda4 start PE 58880 length 160513
       Allowing allocation on /dev/sdb4 start PE 0 length 219393
       Parallel PVs at LE 0 length 10240: /dev/sda4
 Insufficient suitable allocatable extents for logical volume : 10240
more required
     Unlocking /var/lock/lvm/V_vg1
       Closed /dev/sda4
       Closed /dev/sdb4

Here's more of my lvm specs:

# pvdisplay -v
   Scanning for physical volume names
 --- Physical volume ---
 PV Name               /dev/sda4
 VG Name               vg1
 PV Size               857.01 GB / not usable 1.97 MB
 Allocatable           yes
 PE Size (KByte)       4096
 Total PE              219393
 Free PE               160513
 Allocated PE          58880
 PV UUID               zLqW68-3oW4-Mi8H-P2ti-ltnG-WA0C-CRJS1e

 --- Physical volume ---
 PV Name               /dev/sdb4
 VG Name               vg1
 PV Size               857.01 GB / not usable 2.16 MB
 Allocatable           yes
 PE Size (KByte)       4096
 Total PE              219393
 Free PE               219393
 Allocated PE          0
 PV UUID               VuPgY3-kf7s-aFyO-2Nof-G2Sw-xkqN-kwjAnz

 --- Physical volume ---
 PV Name               /dev/md2
 VG Name               vg0
 PV Size               73.28 GB / not usable 29.88 MB
 Allocatable           yes
 PE Size (KByte)       32768
 Total PE              2344
 Free PE               1844
 Allocated PE          500
 PV UUID               tRNWez-5Yi4-ODco-2hIN-KD11-bsND-qEUxAk

# vgdisplay -v
   Finding all volume groups
   Finding volume group "vg1"
 --- Volume group ---
 VG Name               vg1
 System ID
 Format                lvm2
 Metadata Areas        2
 Metadata Sequence No  10
 VG Access             read/write
 VG Status             resizable
 MAX LV                0
 Cur LV                3
 Open LV               2
 Max PV                0
 Cur PV                2
 Act PV                2
 VG Size               1.67 TB
 PE Size               4.00 MB
 Total PE              438786
 Alloc PE / Size       58880 / 230.00 GB
 Free  PE / Size       379906 / 1.45 TB
 VG UUID               rthUcY-KiTw-zqwY-Wgg7-rG54-wTmZ-UYY6zA

 --- Logical volume ---
 LV Name                /dev/vg1/virt
 VG Name                vg1
 LV UUID                N47Gdi-hdHO-jH8a-oBgP-4zvp-q8Uf-zgAQc0
 LV Write Access        read/write
 LV Status              available
 # open                 0
 LV Size                150.00 GB
 Current LE             38400
 Segments               2
 Allocation             inherit
 Read ahead sectors     0
 Block device           253:1

 --- Logical volume ---
 LV Name                /dev/vg1/opadata
 VG Name                vg1
 LV UUID                NGL22V-JcPj-sLBf-CJaK-ps25-QCdz-EXfNK7
 LV Write Access        read/write
 LV Status              available
 # open                 1
 LV Size                40.00 GB
 Current LE             10240
 Segments               1
 Allocation             contiguous
 Read ahead sectors     0
 Block device           253:2

 --- Logical volume ---
 LV Name                /dev/vg1/iscsi_deeds_data
 VG Name                vg1
 LV UUID                WBwyFc-RJnp-z8Cl-hyjS-8AIT-psUc-nj64uS
 LV Write Access        read/write
 LV Status              available
 # open                 1
 LV Size                40.00 GB
 Current LE             10240
 Segments               1
 Allocation             contiguous
 Read ahead sectors     0
 Block device           253:3

 --- Physical volumes ---
 PV Name               /dev/sda4
 PV UUID               zLqW68-3oW4-Mi8H-P2ti-ltnG-WA0C-CRJS1e
 PV Status             allocatable
 Total PE / Free PE    219393 / 160513

 PV Name               /dev/sdb4
 PV UUID               VuPgY3-kf7s-aFyO-2Nof-G2Sw-xkqN-kwjAnz
 PV Status             allocatable
 Total PE / Free PE    219393 / 219393

   Finding volume group "vg0"
 --- Volume group ---
 VG Name               vg0
 System ID
 Format                lvm2
 Metadata Areas        1
 Metadata Sequence No  4
 VG Access             read/write
 VG Status             resizable
 MAX LV                0
 Cur LV                1
 Open LV               1
 Max PV                0
 Cur PV                1
 Act PV                1
 VG Size               73.25 GB
 PE Size               32.00 MB
 Total PE              2344
 Alloc PE / Size       500 / 15.62 GB
 Free  PE / Size       1844 / 57.62 GB
 VG UUID               lRcg12-Pt0L-NYUv-zJfF-GT62-UKnP-VmhtD0

 --- Logical volume ---
 LV Name                /dev/vg0/root
 VG Name                vg0
 LV UUID                av2DIv-p1Ns-pgPW-zN8U-fHbp-tMps-Q5b8dH
 LV Write Access        read/write
 LV Status              available
 # open                 1
 LV Size                15.62 GB
 Current LE             500
 Segments               1
 Allocation             inherit
 Read ahead sectors     0
 Block device           253:0

 --- Physical volumes ---
 PV Name               /dev/md2
 PV UUID               tRNWez-5Yi4-ODco-2hIN-KD11-bsND-qEUxAk
 PV Status             allocatable
 Total PE / Free PE    2344 / 1844


# lvdisplay -v
   Finding all logical volumes
 --- Logical volume ---
 LV Name                /dev/vg1/virt
 VG Name                vg1
 LV UUID                N47Gdi-hdHO-jH8a-oBgP-4zvp-q8Uf-zgAQc0
 LV Write Access        read/write
 LV Status              available
 # open                 0
 LV Size                150.00 GB
 Current LE             38400
 Segments               2
 Allocation             inherit
 Read ahead sectors     0
 Block device           253:1

 --- Logical volume ---
 LV Name                /dev/vg1/opadata
 VG Name                vg1
 LV UUID                NGL22V-JcPj-sLBf-CJaK-ps25-QCdz-EXfNK7
 LV Write Access        read/write
 LV Status              available
 # open                 1
 LV Size                40.00 GB
 Current LE             10240
 Segments               1
 Allocation             contiguous
 Read ahead sectors     0
 Block device           253:2

 --- Logical volume ---
 LV Name                /dev/vg1/iscsi_deeds_data
 VG Name                vg1
 LV UUID                WBwyFc-RJnp-z8Cl-hyjS-8AIT-psUc-nj64uS
 LV Write Access        read/write
 LV Status              available
 # open                 1
 LV Size                40.00 GB
 Current LE             10240
 Segments               1
 Allocation             contiguous
 Read ahead sectors     0
 Block device           253:3

 --- Logical volume ---
 LV Name                /dev/vg0/root
 VG Name                vg0
 LV UUID                av2DIv-p1Ns-pgPW-zN8U-fHbp-tMps-Q5b8dH
 LV Write Access        read/write
 LV Status              available
 # open                 1
 LV Size                15.62 GB
 Current LE             500
 Segments               1
 Allocation             inherit
 Read ahead sectors     0
 Block device           253:0


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