Error while extending logicalvolume Post: 302972301

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Operating Systems Linux Red Hat Error while extending logicalvolume Post 302972301 by Aia on Wednesday 4th of May 2016 12:27:35 AM

05-04-2016

Registered User

Quote:

Originally Posted by gull05

Code:

pvs -a -v
    Wiping cache of LVM-capable devices
  PV                              VG         Fmt  Attr PSize   PFree   DevSize PV UUID
.
.
.
  /dev/sdb1                       vg lvm2 a-   420.00G 120.67G 300.00G tuJPoe-nHD6-R3C7-Mcss-njlT-yMei-e25Kde
  /dev/sdb2                       vg lvm2 a-   100.00G 100.00G 100.00G fYWd52-Xf65-zx7G-9AVg-QoWZ-YVM9-Ee04PM

Code:

perl -ne '/kernel:\s+device-mapper/ and print' /var/log/messages
May  4 10:21:05 bneftp01 kernel: device-mapper: table: device 8:17 too small for target

May  4 10:24:23 bneftp01 kernel: device-mapper: table: device 8:17 too small for target

May  4 10:24:35 bneftp01 kernel: device-mapper: table: device 8:17 too small for target

Thank you for posting the output. That helps to confirm the issue. I have edited your post with some of the relevant information.
The reported PV size (PSize) is bigger (420.00G) than the device(DevSize) size (300.00G). Also, the log messages confirm that with the message highlighted in red. It is obvious something has gone wrong with it. The PV can not be bigger than the device it holds it.

My suggestion:
Backup your data if it is important.
umount any volume you have on the group vg:

Code:

  /dev/vg/a 
  /dev/vg/b
  /dev/vg/c

Resize the pv for /dev/sdb1 with the following command:
pvresize /dev/sdb1
Check again with pvs -a -v or pvdisplay /dev/sdb1
Try to lvextend /dev/vg/a again.
mount the lvm volumes again.

Last edited by Aia; 05-06-2016 at 12:28 AM..

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