[linux-lvm] moving data to a new VG

Misc Things formisc at gmail.com
Sun Jan 10 14:24:39 UTC 2010


>
> Hello,
>  I 've been unsuccessfully trying to  move data from the existing VG to a
> new VG.
> Here are the steps i did:
> [code]
>
> fdisk -l
>
> Disk /dev/hdc: 160.0 GB, 160041885696 bytes
> 255 heads, 63 sectors/track, 19457 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>    Device Boot      Start         End      Blocks   Id  System
>
> /dev/hdc1   *           1        9729    78148161   83  Linux
> /dev/hdc2            9730       19457    78140160   83  Linux
>
> Disk /dev/hdd: 250.0 GB, 250059350016 bytes
> 255 heads, 63 sectors/track, 30401 cylinders
>
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>    Device Boot      Start         End      Blocks   Id  System
> /dev/hdd1   *           1        9729    78148161   83  Linux
> /dev/hdd2            9730       19457    78140160   83  Linux
>
> /dev/hdd3           19458       30401    87907680   83  Linux
>
> Disk /dev/sda: 160.0 GB, 160041885696 bytes
> 255 heads, 63 sectors/track, 19457 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>    Device Boot      Start         End      Blocks   Id  System
>
> /dev/sda1   *           1          13      104391   83  Linux
> /dev/sda2              14       19457   156183930   8e  Linux LVM
>
> Disk /dev/sdb: 1500.3 GB, 1500301910016 bytes
> 255 heads, 63 sectors/track, 182401 cylinders
>
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1               1       60788   488279578+  83  Linux
> /dev/sdb2           60789      121576   488279610   83  Linux
>
> /dev/sdb3          121577      182401   488576812+  83  Linux
>
> pvscan
>   PV /dev/hdd3   VG VG_Storage02    lvm2 [83.83 GB / 0    free]
>   PV /dev/sdb2   VG VG_Storage000   lvm2 [465.66 GB / 0    free]
>   PV /dev/sdb1   VG VG_Storage01    lvm2 [465.66 GB / 316.62 GB free]
>
>   PV /dev/hdc2   VG VG_Storage      lvm2 [74.52 GB / 74.52 GB free]
>   PV /dev/hdd2   VG VG_Storage      lvm2 [74.52 GB / 74.52 GB free]
>   PV /dev/sda2   VG VG_SYS          lvm2 [148.95 GB / 0    free]
>   PV /dev/hdd1   VG VG_Storage00    lvm2 [74.53 GB / 0    free]
>
>   PV /dev/hdc1   VG VG_Storage00    lvm2 [74.53 GB / 0    free]
>   Total: 8 [1.43 TB] / in use: 8 [1.43 TB] / in no VG: 0 [0   ]
>
> vgscan
>   Reading all physical volumes.  This may take a while...
>   Found volume group "VG_Storage02" using metadata type lvm2
>
>   Found volume group "VG_Storage000" using metadata type lvm2
>   Found volume group "VG_Storage01" using metadata type lvm2
>   Found volume group "VG_Storage" using metadata type lvm2
>
>   Found volume group "VG_SYS" using metadata type lvm2
>   Found volume group "VG_Storage00" using metadata type lvm2
>
> lvscan
>   ACTIVE            '/dev/VG_Storage02/LG_VG_Storage02_00' [83.83 GB] inherit
>
>   ACTIVE            '/dev/VG_Storage000/LV_VGSTORAGE000' [465.66 GB] anywhere
>   ACTIVE            '/dev/VG_Storage01/LV_VG_STORAGE01' [149.04 GB] anywhere
>   ACTIVE            '/dev/VG_SYS/LogVol00' [148.07 GB] inherit
>
>   ACTIVE            '/dev/VG_SYS/LogVol01' [896.00 MB] inherit
>   ACTIVE            '/dev/VG_Storage00/LG_VG_Storage00_00' [149.05 GB] inherit
>
> lvdisplay /dev/VG_Storage01/LV_VG_STORAGE01
>   --- Logical volume ---
>
>   LV Name                /dev/VG_Storage01/LV_VG_STORAGE01
>   VG Name                VG_Storage01
>   LV UUID                48dcTk-XKJ1-3umG-ykVu-EjYS-gGP7-i1RN1y
>   LV Write Access        read/write
>   LV Status              available
>
>   # open                 1
>   LV Size                149.04 GB
>   Current LE             76308
>   Segments               1
>   Allocation             anywhere
>   Read ahead sectors     auto
>   - currently set to     512
>
> [/code]
>
> the drive i'm trying to move the data to is /dev/sdb. Dived into 2 partitions. Each 500Gb.
>
> The "/dev/VG_Storage01/LV_VG_STORAGE01" is the original LG that had 2 drives (partitions) -
>
>
> step by step:
>
> 0. /dev/VG_Storage01/LV_VG_STORAGE01 of is not mounted;
>
> 1. /dev/VG_Storage01 originally had /dev/hdc2 and /dev/hdd2.
>
> 2. I added  /dev/sdb1 into /dev/VG_Storage01
>
> 3. did pvmove /dev/hdc2 /dev/sdb1 and pvmove /dev/hdd2 /dev/sdb1
>
>
> 4. removed /dev/hdc2 and /dev/hdd2 from /dev/VG_Storage01
>
> 5. created VG_Storage with /dev/hdc2 and /dev/hdd2
>
> 6. tried to extend /dev/VG_Storage01/LV_VG_STORAGE01:
> [code]
> vextend -l +100%PVS -r -t /dev/VG_Storage01/LV_VG_STORAGE01
>
>   Test mode: Metadata will NOT be updated.
> Segmentation fault
>
> lvextend -v -l +100%FREE -r -t /dev/VG_Storage01/LV_VG_STORAGE01
>   Test mode: Metadata will NOT be updated.
>     Finding volume group VG_Storage01
>
>   Using stripesize of last segment 64.00 KB
>   Rounding size (238417 extents) down to stripe boundary size for segment (238416 extents)
>     Executing: fsadm --dry-run --verbose check /dev/VG_Storage01/LV_VG_STORAGE01
>
> fsadm: "ext3" filesystem found on "/dev/mapper/VG_Storage01-LV_VG_STORAGE01"
> fsadm: Dry execution fsck /dev/mapper/VG_Storage01-LV_VG_STORAGE01
>     Test mode: Skipping archiving of volume group.
>
>   Extending logical volume LV_VG_STORAGE01 to 465.66 GB
>   Insufficient suitable allocatable extents for logical volume LV_VG_STORAGE01: 162108 more required
>     Test mode: Wiping internal cache
>     Wiping internal VG cache
>
> [/code]
>   Block device           253:4
>
> Thank you for your help.
>
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