Hello Yesterday I experimented a bit with my RAID configuration on a pair of SSDs, and it seems that LVM's native RAID does not have TRIM support... At least, when I try to run fstrim manually, it complains even though issue_discards is enabled. Plain LVs on top of an MD RAID PV do work, of course. Am I perhaps missing some configuration, or do RAID1 logical volumes simply not have support for TRIM yet? I'm running a fairly recent kernel (3.15.8) and lvm version says this: LVM version: 2.02.106(2) (2014-04-10) Library version: 1.02.85 (2014-04-10) Driver version: 4.27.0 As an aside, can anyone point me to documentation or other resources about the pros and cons of LVM native RAID1 setup (which I understand uses MD RAID internally?) vs. MD RAID PV + LVM. It seems I might be able to save some SSD space and only mirror the LVs I actually need to keep safe from crashes. -- Jarkko Oranen _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
