From: runappz <runappz@gmail.com>
To: linux-lvm@redhat.com
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')
Date: Wed, 18 Jul 2018 21:25:37 +0800 [thread overview]
Message-ID: <3ec4e4af-8109-ca19-2a57-8e8cf6d67737@gmail.com> (raw)
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
next reply other threads:[~2018-07-18 13:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-18 13:25 runappz [this message]
2018-07-18 14:15 ` [linux-lvm] Got only half the space of RAID10 LV with 4 PVs (similar to RAID1 cause LV shows it has 4 'Mirrored volumes') Douglas Paul
2018-07-18 14:41 ` runappz
2018-07-19 11:33 ` Douglas Paul
-- strict thread matches above, loose matches on Subject: below --
2018-07-17 18:35 Ben Ma
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