<html><head></head><body><div>Maybe an idea to add a cache volume to the LV?? Not 100% sure if this works but would be nice to try.</div><div><span></span></div><div><br></div><div>On Sun, 2021-04-04 at 20:18 +0200, Sebastian Bachmann wrote:</div><blockquote type="cite" style="margin:0 0 0 .8ex; border-left:2px #729fcf solid;padding-left:1ex"><div>Hello,<br></div><div><br></div><div>I played around with the new dm-integrity integration in lvm. Unfortunately, it<br></div><div>is very slow, as the checksums has to be written and read on - which is the<br></div><div>price to pay obviously.<br></div><div><br></div><div>I thought that it might be a good idea to move the metadata to a fast disk,<br></div><div>i.e., a SSD, however that is not possible and I get an error message on pvmove:<br></div><div><br></div><div># pvmove -n r10_int_rimage_0_imeta /dev/sdd /dev/sda2<br></div><div> Unable to pvmove device used for raid with integrity.<br></div><div><br></div><div>I could not find a reason why this should not be done in theory, thus I guess<br></div><div>that this is simply not supported by LVM right now?<br></div><div>Or is there another reason why you should keep the metadata always on the same<br></div><div>device?<br></div><div><br></div><div>Best,<br></div><div>Sebastian<br></div><div><br></div><div>_______________________________________________<br></div><div>linux-lvm mailing list<br></div><div><a href="mailto:linux-lvm@redhat.com">linux-lvm@redhat.com</a><br></div><div><a href="https://listman.redhat.com/mailman/listinfo/linux-lvm">https://listman.redhat.com/mailman/listinfo/linux-lvm</a><br></div><div>read the LVM HOW-TO at <a href="http://tldp.org/HOWTO/LVM-HOWTO/">http://tldp.org/HOWTO/LVM-HOWTO/</a><br></div><div><br></div></blockquote></body></html>