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Description of problem: # A striped raid [root@host-117 ~]# lvcreate -i 10 --type raid4 -L 100M -n raid4 test Using default stripesize 64.00 KiB. Rounding size 100.00 MiB (25 extents) up to stripe boundary size 120.00 MiB (30 extents). Number of stripes (10) must not exceed number of physical volumes (7) # mirrored raid [root@host-117 ~]# lvcreate -m 0 --type raid1 -L 100M -n raid1 test --mirrors must be at least 1 with segment type raid1. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 11 --type raid1 -L 100M -n raid test Only up to 10 mirrors in raid1 supported currently. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 11 --type raid1 -L 100M -n raid1 test Only up to 10 mirrors in raid1 supported currently. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 10 --type raid1 -L 100M -n raid1 test Only up to 10 mirrors in raid1 supported currently. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 9 --type raid1 -L 100M -n raid1 test Insufficient suitable allocatable extents for logical volume raid1: 260 more required [root@host-117 ~]# lvcreate -m 8 --type raid1 -L 100M -n raid1 test Insufficient suitable allocatable extents for logical volume raid1: 234 more required [root@host-117 ~]# lvcreate -m 7 --type raid1 -L 100M -n raid1 test Insufficient suitable allocatable extents for logical volume raid1: 208 more required [root@host-117 ~]# lvcreate -m 6 --type raid1 -L 100M -n raid1 test Logical volume "raid1" created. [root@host-117 ~]# lvcreate -m 0 --type mirror -L 100M -n mirror test --mirrors must be at least 1 with segment type mirror. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 11 --type mirror -L 100M -n mirror test Only up to 8 mirrors in mirror supported currently. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 10 --type mirror -L 100M -n mirror test Only up to 8 mirrors in mirror supported currently. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 9 --type mirror -L 100M -n mirror test Only up to 8 mirrors in mirror supported currently. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 8 --type mirror -L 100M -n mirror test Only up to 8 mirrors in mirror supported currently. Run `lvcreate --help' for more information. [root@host-117 ~]# lvcreate -m 7 --type mirror -L 100M -n mirror test Insufficient suitable allocatable extents for logical volume mirror: 200 more required [root@host-117 ~]# lvcreate -m 6 --type mirror -L 100M -n mirror test Logical volume "mirror" created. [root@host-117 ~]# lvs -a -o +devices LV VG Attr LSize Log Cpy%Sync Devices mirror test mwi-a-m--- 100.00m [mirror_mlog] 100.00 mirror_mimage_0(0),mirror_mimage_1(0),mirror_mimage_2(0),mirror_mimage_3(0),mirror_mimage_4(0),mirror_mimage_5(0),mirror_mimage_6(0) [mirror_mimage_0] test iwi-aom--- 100.00m /dev/sda1(26) [mirror_mimage_1] test iwi-aom--- 100.00m /dev/sdb1(26) [mirror_mimage_2] test iwi-aom--- 100.00m /dev/sdc1(26) [mirror_mimage_3] test iwi-aom--- 100.00m /dev/sdd1(26) [mirror_mimage_4] test iwi-aom--- 100.00m /dev/sde1(26) [mirror_mimage_5] test iwi-aom--- 100.00m /dev/sdf1(26) [mirror_mimage_6] test iwi-aom--- 100.00m /dev/sdg1(26) [mirror_mlog] test lwi-aom--- 4.00m /dev/sdg1(51) raid1 test rwi-a-r--- 100.00m 100.00 raid1_rimage_0(0),raid1_rimage_1(0),raid1_rimage_2(0),raid1_rimage_3(0),raid1_rimage_4(0),raid1_rimage_5(0),raid1_rimage_6(0) [raid1_rimage_0] test iwi-aor--- 100.00m /dev/sda1(1) [raid1_rimage_1] test iwi-aor--- 100.00m /dev/sdb1(1) [raid1_rimage_2] test iwi-aor--- 100.00m /dev/sdc1(1) [raid1_rimage_3] test iwi-aor--- 100.00m /dev/sdd1(1) [raid1_rimage_4] test iwi-aor--- 100.00m /dev/sde1(1) [raid1_rimage_5] test iwi-aor--- 100.00m /dev/sdf1(1) [raid1_rimage_6] test iwi-aor--- 100.00m /dev/sdg1(1) [raid1_rmeta_0] test ewi-aor--- 4.00m /dev/sda1(0) [raid1_rmeta_1] test ewi-aor--- 4.00m /dev/sdb1(0) [raid1_rmeta_2] test ewi-aor--- 4.00m /dev/sdc1(0) [raid1_rmeta_3] test ewi-aor--- 4.00m /dev/sdd1(0) [raid1_rmeta_4] test ewi-aor--- 4.00m /dev/sde1(0) [raid1_rmeta_5] test ewi-aor--- 4.00m /dev/sdf1(0) [raid1_rmeta_6] test ewi-aor--- 4.00m /dev/sdg1(0) Version-Release number of selected component (if applicable): lvm2-2.02.164-3.el7 BUILT: Wed Aug 24 05:20:41 CDT 2016 lvm2-libs-2.02.164-3.el7 BUILT: Wed Aug 24 05:20:41 CDT 2016 lvm2-cluster-2.02.164-3.el7 BUILT: Wed Aug 24 05:20:41 CDT 2016
So I think this is just about considering whether the messages produced can be improved or not.
(In reply to Alasdair Kergon from comment #2) > So I think this is just about considering whether the messages produced can > be improved or not. yeah, might want to get back with reporter and ask specifically what they are looking for. Probably a few things that I can see that could use a touch-up. Low prio though.