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# Software RAID 1
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# Partitioning: Compute Nodes
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mdadm
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md0 -> boot
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The compute nodes (except diskless nodes) have two disks configured as a software RAID-1 using ``mdadm``.
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md1 -> lvm
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Two partitions are available:
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```
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md0 -> /boot
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md1 -> used for lvm
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```
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## SSD with 223G
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The LVM is setup as follows:
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lvextend -L 72G /dev/vg_system/lv_var
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```
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resize2fs -p /dev/vg_system/lv_var
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lv_cinder-container vg_system -wi-a----- 480.00g HDD / 100g SSD
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lvcreate -L 100G -n lv_cinder-container vg_system
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lv_home vg_system -wi-ao---- 10.00g
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pvcreate /dev/vg_system/lv_cinder-container
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lv_root vg_system -wi-ao---- 2.00g
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vgcreate vg_cinder /dev/vg_system/lv_cinder-container
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lv_swap vg_system -wi-ao---- 32.00g
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lv_tmp vg_system -wi-ao---- 2.00g
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## HDD with 1000G
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lv_usr vg_system -wi-ao---- 5.00g
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lvextend -L 400G /dev/vg_system/lv_var
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lv_var vg_system -wi-ao---- 400.00g HDD / 72g SSD
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resize2fs -p /dev/vg_system/lv_var
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``` |
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lvcreate -L 480G -n lv_cinder-container vg_system
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\ No newline at end of file |
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pvcreate /dev/vg_system/lv_cinder-container
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vgcreate vg_cinder /dev/vg_system/lv_cinder-container |
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\ No newline at end of file |
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