[linux-lvm] lvremove does not pass discards if volume is part of thin pool

Peter Rajnoha prajnoha at redhat.com
Wed Aug 12 07:57:23 UTC 2015

On 08/12/2015 09:46 AM, Peter Rajnoha wrote:
> On 08/11/2015 04:35 PM, Mike Snitzer wrote:
>> I'll have to defer to the lvm2 developers, I thought we added explicit
>> logging when lvm2 issues discards (as part of lvremove, etc) -- Peter,
>> and/or Alasdair?
> Yes, we log that like (visible in the verbose -vvv output):
>   "Discarding X extents offset Y sectors on /dev/Z."
> Also, when removing a volume, we issue this message:
> # lvremove vg1/lvol0
> Do you really want to remove and DISCARD logical volume lvol0? [y/n]: 
> For this, the "devices/issue_discards=1" must be set - it's not
> by default.

Well, sorry, this applies for usual PVs, not thin pools (I overlooked
the $subject and just saw the last question...)


More information about the linux-lvm mailing list