Re: [CentOS] LVM thin volumes fstrim operation not supported

Looked into this further and it looks like a kernel bug. If I downgraded the running kernel everything started working again. I've reported here https://bugs.centos.org/view.php?id=10191 with some more details. Thanks On 20 January 2016 at 11:36, Tim Robinson wrote: > I still get

Re: [CentOS] LVM thin volumes fstrim operation not supported

I still get the "the discard operation is not supported" fstrim error when the LVs are set to "nopassdown" Seems that when I use ext4 the fstrim reports that it worked but the LVs Data% does not decrease after the fstrim. xfs just throws the error. I've also been looking at the output of lsblk -D

[CentOS] LVM thin volumes fstrim operation not supported

Hi All I'm trying to setup my LVM thin pool to support discards so that the pool can reclaim space even if the underlying device doesn't support trim. It is my understanding that all thin pools should support trim even if the underlying device doesn't. (please correct me if I'm wrong here) I have