<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">to reply myself, probably bug in md raid1 implementation of lvm2, since it's quite a new code in 2014 lvm2. </div><div class="gmail_default" style="font-family:verdana,sans-serif">Fixed with help from irc #lvm, thanks to kabi : ithaqua:/mnt # lvremove vg1/split1 Do you really want to remove active logical volume split1? [y/n]: y Logical volume "split1" successfully removed ithaqua:/mnt # lvremove vg1/gatewayVol_rmeta_1 Do you really want to remove active logical volume gatewayVol_rmeta_1? [y/n]: y Logical volume "gatewayVol_rmeta_1" successfully removed ithaqua:/mnt # lvremove vg1/gatewayVol_rmeta_0 Do you really want to remove active logical volume gatewayVol_rmeta_0? [y/n]: y Logical volume "gatewayVol_rmeta_0" successfully removed ithaqua:/mnt # lvremove vg1/gatewayVol_rimage_1 Logical volume "gatewayVol_rimage_1" successfully removed ithaqua:/mnt # lvconvert -m1 vg1/gatewayVol device-mapper: create ioctl on vg1-gatewayVol_rimage_0 failed: Device or resource busy Failed to lock logical volume vg1/gatewayVol. ithaqua:/mnt # lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert gatewayVol vg1 -wi-ao---- 8.00g gatewayVol_rimage_1 vg1 -wi------- 8.00g gatewayVol_rmeta_0 vg1 -wi-a----- 4.00m gatewayVol_rmeta_1 vg1 -wi------- 4.00m ithaqua:/mnt # lvremove vg1/gatewayVol_rmeta_1 Do you really want to remove active logical volume gatewayVol_rmeta_1? [y/n]: y Logical volume "gatewayVol_rmeta_1" successfully removed ithaqua:/mnt # lvremove vg1/gatewayVol_rmeta_0 Do you really want to remove active logical volume gatewayVol_rmeta_0? [y/n]: y Logical volume "gatewayVol_rmeta_0" successfully removed ithaqua:/mnt # lvremove vg1/gatewayVol_rimage_1 Logical volume "gatewayVol_rimage_1" successfully removed ithaqua:/mnt # lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert gatewayVol vg1 -wi-ao---- 8.00g ithaqua:/mnt # dmsetup table | grep gate vg1-gatewayVol_rimage_0: 0 16777216 linear 8:5 714926080 vg1-gatewayVol: 0 16777216 linear 8:5 714926080 ithaqua:/mnt # dmsetup info -c | grep gate vg1-gatewayVol_rimage_0 254 52 L--w 0 1 0 LVM-BynKRpbJnegQy2RbeN9sxON1zKghQ7Fw2Q4aqEReJHtPNxXFyPyaXz040c5y3ZWA vg1-gatewayVol 254 55 L--w 1 1 0 LVM-BynKRpbJnegQy2RbeN9sxON1zKghQ7FwMYUKRXvsN40JWStnPz6PSjxrlg0QxmCb ithaqua:/mnt # dmsetup ls --tree vg1-gatewayVol_rimage_0 (254:52) L- (8:5) vg1-gatewayVol (254:55) L- (8:5) ithaqua:/mnt # dmsetup remove vg1-gatewayVol_rimage_0 ithaqua:/mnt # dmsetup info -c | grep gate vg1-gatewayVol 254 55 L--w 1 1 0 LVM-BynKRpbJnegQy2RbeN9sxON1zKghQ7FwMYUKRXvsN40JWStnPz6PSjxrlg0QxmCb ithaqua:/mnt # dmsetup table | grep gate vg1-gatewayVol: 0 16777216 linear 8:5 714926080 ithaqua:/mnt # lvconvert -m1 vg1/gatewayVol ithaqua:/mnt # lvs -a | grep gate LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert gatewayVol vg1 rwi-aor--- 8.00g 10.84 [gatewayVol_rimage_0] vg1 Iwi-aor--- 8.00g [gatewayVol_rimage_1] vg1 Iwi-aor--- 8.00g [gatewayVol_rmeta_0] vg1 ewi-aor--- 4.00m [gatewayVol_rmeta_1] vg1 ewi-aor--- 4.00m </div><div class="gmail_extra"> <div class="gmail_quote">On Thu, Oct 8, 2015 at 12:17 PM, Anatoly Pugachev <<a href="mailto:matorola@gmail.com" target="_blank">matorola@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div style="font-family:verdana,sans-serif">Hello! </div><div style="font-family:verdana,sans-serif">Trying to split one of mirror volumes : # lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert gatewayVol vg1 rwi-aor--- 8.00g 100.00 </div><div style="font-family:verdana,sans-serif"># lvconvert --splitmirrors 1 -n split1 vg1/gatewayVol # lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert gatewayVol vg1 -wi-ao---- 8.00g split1 vg1 -wi-a----- 8.00g </div><div style="font-family:verdana,sans-serif">converting original volume back to mirror configuration, leaving split1 volume intact: # lvconvert -m1 vg1/gatewayVol device-mapper: create ioctl on vg1-gatewayVol_rimage_1 failed: Device or resource busy Failed to lock logical volume vg1/gatewayVol. # lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert gatewayVol vg1 -wi-ao---- 8.00g gatewayVol_rimage_1 vg1 -wi------- 8.00g gatewayVol_rmeta_0 vg1 -wi-a----- 4.00m gatewayVol_rmeta_1 vg1 -wi-a----- 4.00m split1 vg1 -wi-a----- 8.00g </div><div style="font-family:verdana,sans-serif">So, what I should do now? What is rimage* and rmeta* ? How do I get rid of them, preserving data on gatewayVol and split1 volumes? </div><div style="font-family:verdana,sans-serif">Thanks. </div><div style="font-family:verdana,sans-serif">PS: opensuse 13.2 # lvm version LVM version: 2.02.114(2) (2014-11-28) Library version: 1.03.01 (2014-11-28) Driver version: 4.27.0 </div></div> </blockquote></div> </div></div>