Bug ID 524185: Unable to run lvreduce

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP TMOS(all modules)

Known Affected Versions:
11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5

Fixed In:
11.6.0 HF6

Opened: May 19, 2015
Severity: 4-Minor
Related AskF5 Article:


Unable to run lvreduce command due to missing program 'blockdev'. (The missing program 'blockdev' is part of the util-linux-extras package.)


Cannot reallocate the vmdisks app volume.


Attempting to reallocate disk resources when upgrading a vCMP system.


Acquire the /sbin/blockdev executable from a different BIG-IP device running version 11.6.0-HF6 or 12.x, and install it on the BIG-IP device affected by this issue. Note: If the receiving system is a multi-blade VIPRION, you must install the file on each blade. If you do not have a suitable donor device available, you can contact F5 Support, who will be able to supply the executable to you. Note: Using a blockdev executable from another source is not recommended.

Fix Information

The blockdev utility is now present, so you can run the lvreduce command to reallocate the vmdisks app volume.

Behavior Change