Alasdair G Kergon writes: > On Tue, Jan 05, 2021 at 02:31:00PM -0500, Phillip Susi wrote: >> How can I forge it to make the mirror on a single pv? > > If --alloc anywhere isn't doing the trick, you'll need to dig into > the -vvvv output to try to understand why. There might be > a config option setting getting in the way disabling the choice you want > it to make, or if it's an algorithmic issue you might try to coax it to I'm not seeing a whole lot here other than what appears to be this flat out refusal to use extents from the same pv: #metadata/lv_manip.c:2535 Not using free space on existing parallel PV /dev/md1. Limiting the allocation to two specific extent ranges does not help either. Full log: #libdm-config.c:1061 Setting allocation/mirror_logs_require_separate_pvs to 0 #metadata/lv_manip.c:3439 Adjusted allocation request to 7681 logical extents. Existing size 0. New size 7681. #metadata/lv_manip.c:3442 Mirror log of 1 extents of size 8192 sectors needed for region size 4096. #libdm-config.c:1061 Setting allocation/maximise_cling to 1 #metadata/pv_map.c:54 Allowing allocation on /dev/md1 start PE 2561 length 23039 #metadata/pv_map.c:54 Allowing allocation on /dev/md1 start PE 128000 length 347469 #metadata/lv_manip.c:2321 Parallel PVs at LE 0 length 7680: /dev/md1 #metadata/lv_manip.c:3186 Trying allocation using contiguous policy. #metadata/lv_manip.c:2788 Areas to be sorted and filled sequentially. #metadata/lv_manip.c:2704 Still need 7681 total extents from 370508 remaining (0 positional slots): #metadata/lv_manip.c:2707 1 (1 data/0 parity) parallel areas of 7680 extents each #metadata/lv_manip.c:2711 1 metadata area of 1 extents each #metadata/lv_manip.c:2535 Not using free space on existing parallel PV /dev/md1. #metadata/lv_manip.c:3186 Trying allocation using cling policy. #metadata/lv_manip.c:2783 Cling_to_allocated is set #metadata/lv_manip.c:2786 1 preferred area(s) to be filled positionally. #metadata/lv_manip.c:2704 Still need 7681 total extents from 370508 remaining (1 positional slots): #metadata/lv_manip.c:2707 1 (1 data/0 parity) parallel areas of 7680 extents each #metadata/lv_manip.c:2711 1 metadata area of 1 extents each #metadata/lv_manip.c:2535 Not using free space on existing parallel PV /dev/md1. #metadata/lv_manip.c:3186 Trying allocation using normal policy. #metadata/lv_manip.c:2783 Cling_to_allocated is set #metadata/lv_manip.c:2788 Areas to be sorted and filled sequentially. #metadata/lv_manip.c:2704 Still need 7681 total extents from 370508 remaining (0 positional slots): #metadata/lv_manip.c:2707 1 (1 data/0 parity) parallel areas of 7680 extents each #metadata/lv_manip.c:2711 1 metadata area of 1 extents each #metadata/lv_manip.c:2535 Not using free space on existing parallel PV /dev/md1. #metadata/lv_manip.c:2783 Cling_to_allocated is not set #metadata/lv_manip.c:2788 Areas to be sorted and filled sequentially. #metadata/lv_manip.c:2704 Still need 7681 total extents from 370508 remaining (0 positional slots): #metadata/lv_manip.c:2707 1 (1 data/0 parity) parallel areas of 7680 extents each #metadata/lv_manip.c:2711 1 metadata area of 1 extents each #metadata/lv_manip.c:2535 Not using free space on existing parallel PV /dev/md1. #metadata/lv_manip.c:3220 Insufficient suitable allocatable extents for logical volume : 7681 more required _______________________________________________ linux-lvm mailing list linux-lvm@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
