https://community.hpe.com/t5/operating-system-linux/lvm-mirroring-in-sles-10/m-p/4626288#M40684 <!--!*#-->I am looking to convert an existing LV into a mirrored LV in order to migrate data from one disk to another. I have done this in HP-UX but never tried in Linux. I see there is no option to do lvextend -m1 but have found lvconvert -m1. When attempting that I get a strange error.<BR /><BR /># lvconvert -m1 /dev/vgtest_x/lvol1 /dev/dm-21<BR /> Not enough PVs with free space available for parallel allocation.<BR /> Consider --alloc anywhere if desperate.<BR /><BR /># pvs<BR /> PV VG Fmt Attr PSize PFree <BR /> /dev/cciss/c0d0p2 vg00 lvm2 a- 20.00G 6.40G<BR /> /dev/dm-13 vgDGC lvm2 a- 50.34G 50.34G<BR /> /dev/dm-16 vgDGC lvm2 a- 50.34G 50.34G<BR /> /dev/dm-17 vgDGC lvm2 a- 50.34G 50.34G<BR /> /dev/dm-18 vgDGC lvm2 a- 50.34G 50.34G<BR /> /dev/dm-19 lvm2 -- 8.43G 8.43G<BR /> /dev/dm-20 vgtest_x lvm2 a- 8.43G 8.43G<BR /> /dev/dm-21 vgtest_x lvm2 a- 8.43G 8.43G<BR /> /dev/dm-22 vgtest_x lvm2 a- 8.43G 2.43G<BR /><BR /><BR /># SPident<BR />CONCLUSION: System is up-to-date!<BR /> found SLE-10-x86_64-SP2<BR /><BR /><BR /><BR /><BR /> Thu, 29 Apr 2010 17:56:44 GMT RonVH 2010-04-29T17:56:44Z https://community.hpe.com/t5/operating-system-linux/lvm-mirroring-in-sles-10/m-p/4626288#M40684 <!--!*#-->I am looking to convert an existing LV into a mirrored LV in order to migrate data from one disk to another. I have done this in HP-UX but never tried in Linux. I see there is no option to do lvextend -m1 but have found lvconvert -m1. When attempting that I get a strange error.<BR /><BR /># lvconvert -m1 /dev/vgtest_x/lvol1 /dev/dm-21<BR /> Not enough PVs with free space available for parallel allocation.<BR /> Consider --alloc anywhere if desperate.<BR /><BR /># pvs<BR /> PV VG Fmt Attr PSize PFree <BR /> /dev/cciss/c0d0p2 vg00 lvm2 a- 20.00G 6.40G<BR /> /dev/dm-13 vgDGC lvm2 a- 50.34G 50.34G<BR /> /dev/dm-16 vgDGC lvm2 a- 50.34G 50.34G<BR /> /dev/dm-17 vgDGC lvm2 a- 50.34G 50.34G<BR /> /dev/dm-18 vgDGC lvm2 a- 50.34G 50.34G<BR /> /dev/dm-19 lvm2 -- 8.43G 8.43G<BR /> /dev/dm-20 vgtest_x lvm2 a- 8.43G 8.43G<BR /> /dev/dm-21 vgtest_x lvm2 a- 8.43G 8.43G<BR /> /dev/dm-22 vgtest_x lvm2 a- 8.43G 2.43G<BR /><BR /><BR /># SPident<BR />CONCLUSION: System is up-to-date!<BR /> found SLE-10-x86_64-SP2<BR /><BR /><BR /><BR /><BR /> Thu, 29 Apr 2010 17:56:44 GMT https://community.hpe.com/t5/operating-system-linux/lvm-mirroring-in-sles-10/m-p/4626288#M40684 RonVH 2010-04-29T17:56:44Z