From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx08.extmail.prod.ext.phx2.redhat.com [10.5.110.32]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F0D3C308332E for ; Tue, 17 Jul 2018 18:36:06 +0000 (UTC) Received: from mail-pl0-f49.google.com (mail-pl0-f49.google.com [209.85.160.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6950DC057F81 for ; Tue, 17 Jul 2018 18:35:54 +0000 (UTC) Received: by mail-pl0-f49.google.com with SMTP id w3-v6so840011plq.2 for ; Tue, 17 Jul 2018 11:35:54 -0700 (PDT) Received: from ?IPv6:fc00:101:101:0:786c:98fe:a00e:df34? ([2402:f000:9:c801:6518:f7ee:fcb9:7f12]) by smtp.gmail.com with ESMTPSA id y9-v6sm2212173pgv.31.2018.07.17.11.35.51 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Jul 2018 11:35:52 -0700 (PDT) From: Ben Ma Message-ID: <3598b422-8ba9-22ea-e81f-810965e4d860@gmail.com> Date: Wed, 18 Jul 2018 02:35:25 +0800 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [linux-lvm] Got only half the space of RAID10 LV with 4 PVs (similar to RAID1 cause LV shows it has 4 'Mirrored volumes') Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="utf-8"; format="flowed" To: linux-lvm@redhat.com Hello, guys, I'm trying to build an raid10 lv for root fs. I used these commands:     lvcreate --type raid10 -m 1 -i 2 -l 24576 pve # created lvol1     lvcreate --type raid10 -m 1 -i 2 -l 8 pve # created lvol2     lvcreate --type raid10 -m 1 -i 2 -l 8 pve # created lvol3     lvcreate --type raid10 -m 1 -i 2 -l 8 pve # created lvol4     lvcreate --type raid10 -m 1 -l 8 pve # created lvol5 Last two commands was runned in rescue mode of openSuSE Leap 15.0, with a slightly newer lvm version (about 2017-09-xx). While first 3 commands was runned in Proxmox VE 5.2, whoes lvm is 2.02.168(2016-11-30). The default LE size was 4MiB, so that I expect lvol1 to be 2*4*24576 MiB, while other 4 are all 2*4*8 MiB. However, I only got 4*24576 MiB and 4*8 MiB partitions. I tried to run `mkfs.ext4` on lvol3 and mount it. `df` shows clearly that lvol3 is a 32MiB volume. Output of `lvdisplay -m`is as follow. Note that all lvol1-5 has a "Mirrored volumes" value of 4. I suppose that this value should be 2 for a 4-PV RAID10 setup.Any suggestions?       --- Logical volume ---       LV Path                /dev/pve/swap       LV Name                swap       VG Name                pve       LV UUID EcMef2-ld3E-088a-sK1n-Ld8Q-Oies-EhzjUu       LV Write Access        read/write       LV Creation host, time proxmox, 2018-07-18 00:55:20 +0800       LV Status              available       # open                 2       LV Size                8.00 GiB       Current LE             2048       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     256       Block device           253:0       --- Segments ---       Logical extents 0 to 2047:         Type        linear         Physical volume    /dev/sda3         Physical extents    0 to 2047       --- Logical volume ---       LV Path                /dev/pve/root       LV Name                root       VG Name                pve       LV UUID AfNvKq-K9Z3-hX3M-06jh-DcbA-1VDo-HZg4w9       LV Write Access        read/write       LV Creation host, time proxmox, 2018-07-18 00:55:20 +0800       LV Status              available       # open                 1       LV Size                96.00 GiB       Current LE             24576       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     256       Block device           253:1       --- Segments ---       Logical extents 0 to 24575:         Type        linear         Physical volume    /dev/sda3         Physical extents    2048 to 26623       --- Logical volume ---       LV Name                data       VG Name                pve       LV UUID cs33YQ-RVgl-6TH2-59Dz-9oev-eMtB-cTfoh9       LV Write Access        read/write       LV Creation host, time proxmox, 2018-07-18 00:55:21 +0800       LV Pool metadata       data_tmeta       LV Pool data           data_tdata       LV Status              available       # open                 0       LV Size                372.15 GiB       Allocated pool data    0.00%       Allocated metadata     0.04%       Current LE             95271       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     256       Block device           253:53       --- Segments ---       Logical extents 0 to 95270:         Type        thin-pool         Monitoring        monitored         Chunk size        64.00 KiB         Discards        passdown         Thin count        0         Transaction ID    0         Zero new blocks    yes       --- Logical volume ---       LV Path                /dev/pve/root2       LV Name                root2       VG Name                pve       LV UUID lM45gq-h9r2-HarB-wUlL-fnhd-8Wwp-blD0fo       LV Write Access        read/write       LV Creation host, time rescue, 2018-07-18 01:13:18 +0800       LV Status              available       # open                 0       LV Size                3.12 GiB       Current LE             800       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     256       Block device           253:2       --- Segments ---       Logical extents 0 to 799:         Type        linear         Physical volume    /dev/sda3         Physical extents    123841 to 124640       --- Logical volume ---       LV Path                /dev/pve/boot       LV Name                boot       VG Name                pve       LV UUID wcAt0f-MgMY-MKRf-uFmW-fs6K-c8rE-EFgmsu       LV Write Access        read/write       LV Creation host, time rescue, 2018-07-18 01:20:33 +0800       LV Status              available       # open                 0       LV Size                512.00 MiB       Current LE             128       Mirrored volumes       4       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     256       Block device           253:54       --- Segments ---       Logical extents 0 to 127:         Type        raid1         Monitoring        monitored         Raid Data LV 0           Logical volume    boot_rimage_0           Logical extents    0 to 127         Raid Data LV 1           Logical volume    boot_rimage_1           Logical extents    0 to 127         Raid Data LV 2           Logical volume    boot_rimage_2           Logical extents    0 to 127         Raid Data LV 3           Logical volume    boot_rimage_3           Logical extents    0 to 127         Raid Metadata LV 0    boot_rmeta_0         Raid Metadata LV 1    boot_rmeta_1         Raid Metadata LV 2    boot_rmeta_2         Raid Metadata LV 3    boot_rmeta_3       --- Logical volume ---       LV Path                /dev/pve/lvol1       LV Name                lvol1       VG Name                pve       LV UUID xh5aWn-vD7f-17S4-erB0-WP1L-PIa3-dWMLw0       LV Write Access        read/write       LV Creation host, time pve, 2018-07-18 01:42:07 +0800       LV Status              available       # open                 0       LV Size                96.00 GiB       Current LE             24576       Mirrored volumes       4       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     1024       Block device           253:55       --- Segments ---       Logical extents 0 to 24575:         Type        raid10         Monitoring        monitored         Raid Data LV 0           Logical volume    lvol1_rimage_0           Logical extents    0 to 24575         Raid Data LV 1           Logical volume    lvol1_rimage_1           Logical extents    0 to 24575         Raid Data LV 2           Logical volume    lvol1_rimage_2           Logical extents    0 to 24575         Raid Data LV 3           Logical volume    lvol1_rimage_3           Logical extents    0 to 24575         Raid Metadata LV 0    lvol1_rmeta_0         Raid Metadata LV 1    lvol1_rmeta_1         Raid Metadata LV 2    lvol1_rmeta_2         Raid Metadata LV 3    lvol1_rmeta_3       --- Logical volume ---       LV Path                /dev/pve/lvol2       LV Name                lvol2       VG Name                pve       LV UUID sx0AEz-sOG0-KtRb-0df9-7axD-9HmH-e3T0G0       LV Write Access        read/write       LV Creation host, time pve, 2018-07-18 01:51:04 +0800       LV Status              available       # open                 0       LV Size                32.00 MiB       Current LE             8       Mirrored volumes       4       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     1024       Block device           253:56       --- Segments ---       Logical extents 0 to 7:         Type        raid10         Monitoring        monitored         Raid Data LV 0           Logical volume    lvol2_rimage_0           Logical extents    0 to 7         Raid Data LV 1           Logical volume    lvol2_rimage_1           Logical extents    0 to 7         Raid Data LV 2           Logical volume    lvol2_rimage_2           Logical extents    0 to 7         Raid Data LV 3           Logical volume    lvol2_rimage_3           Logical extents    0 to 7         Raid Metadata LV 0    lvol2_rmeta_0         Raid Metadata LV 1    lvol2_rmeta_1         Raid Metadata LV 2    lvol2_rmeta_2         Raid Metadata LV 3    lvol2_rmeta_3       --- Logical volume ---       LV Path                /dev/pve/lvol3       LV Name                lvol3       VG Name                pve       LV UUID XIsMPd-WYOt-IOOc-F16M-O18D-foI3-RiAR57       LV Write Access        read/write       LV Creation host, time pve, 2018-07-18 01:56:46 +0800       LV Status              available       # open                 0       LV Size                32.00 MiB       Current LE             8       Mirrored volumes       4       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     1024       Block device           253:57       --- Segments ---       Logical extents 0 to 7:         Type        raid10         Monitoring        monitored         Raid Data LV 0           Logical volume    lvol3_rimage_0           Logical extents    0 to 7         Raid Data LV 1           Logical volume    lvol3_rimage_1           Logical extents    0 to 7         Raid Data LV 2           Logical volume    lvol3_rimage_2           Logical extents    0 to 7         Raid Data LV 3           Logical volume    lvol3_rimage_3           Logical extents    0 to 7         Raid Metadata LV 0    lvol3_rmeta_0         Raid Metadata LV 1    lvol3_rmeta_1         Raid Metadata LV 2    lvol3_rmeta_2         Raid Metadata LV 3    lvol3_rmeta_3       --- Logical volume ---       LV Path                /dev/pve/lvol4       LV Name                lvol4       VG Name                pve       LV UUID 0Iqsan-2Apb-JwUW-DMLU-k4AO-NOrJ-DSQYu9       LV Write Access        read/write       LV Creation host, time rescue, 2018-07-18 02:01:52 +0800       LV Status              available       # open                 0       LV Size                32.00 MiB       Current LE             8       Mirrored volumes       4       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     1024       Block device           253:58       --- Segments ---       Logical extents 0 to 7:         Type        raid10         Monitoring        monitored         Raid Data LV 0           Logical volume    lvol4_rimage_0           Logical extents    0 to 7         Raid Data LV 1           Logical volume    lvol4_rimage_1           Logical extents    0 to 7         Raid Data LV 2           Logical volume    lvol4_rimage_2           Logical extents    0 to 7         Raid Data LV 3           Logical volume    lvol4_rimage_3           Logical extents    0 to 7         Raid Metadata LV 0    lvol4_rmeta_0         Raid Metadata LV 1    lvol4_rmeta_1         Raid Metadata LV 2    lvol4_rmeta_2         Raid Metadata LV 3    lvol4_rmeta_3       --- Logical volume ---       LV Path                /dev/pve/lvol5       LV Name                lvol5       VG Name                pve       LV UUID jwPC0n-HmOY-NBO6-KIJC-jHen-7sFb-pEMVQb       LV Write Access        read/write       LV Creation host, time rescue, 2018-07-18 02:02:03 +0800       LV Status              available       # open                 0       LV Size                32.00 MiB       Current LE             8       Mirrored volumes       4       Segments               1       Allocation             inherit       Read ahead sectors     auto       - currently set to     1024       Block device           253:59       --- Segments ---       Logical extents 0 to 7:         Type        raid10         Monitoring        monitored         Raid Data LV 0           Logical volume    lvol5_rimage_0           Logical extents    0 to 7         Raid Data LV 1           Logical volume    lvol5_rimage_1           Logical extents    0 to 7         Raid Data LV 2           Logical volume    lvol5_rimage_2           Logical extents    0 to 7         Raid Data LV 3           Logical volume    lvol5_rimage_3           Logical extents    0 to 7         Raid Metadata LV 0    lvol5_rmeta_0         Raid Metadata LV 1    lvol5_rmeta_1         Raid Metadata LV 2    lvol5_rmeta_2         Raid Metadata LV 3    lvol5_rmeta_3 Regards, Ben Ma