Differences between revisions 8 and 13 (spanning 5 versions)

KVM Host Disk Layout

This disk layout has several layers. It uses btrfs, on top of LVM, on top of luks encryption, on top of raid, on top of the disks partitions.

Hardware

Two 16G SSD disks are used for the KVM Host. Two 2T SATA disks are used for the KVM Guests filesystem images.

Mark your disks! Spend time finding your disks S/N. Put a physical sticker on the disk. In the future this will help you identify a failing disk.

sda     16G
sda1   256M
sda2 15360M

sdb     16G
sdb1   256M
sdb2 15360M

md0 raid1 (sda1, sdb1)
md1 raid1 (sda2, sdb2)

md1 luks (md1_crypt)

md1_crypt lvm (vg1)

Initially the swap partition was 512M, but it ran full and was increased to 1G.

vg1 root 2G (/dev/vg1/root)
vg1 swap 1G (/dev/vg1/swap)

/dev/vg1/root /     (btrfs)
/dev/md0      /boot (btrfs)
/dev/vg1/swap       (swap)

sdc     2T
sdc1 1856G

sdd     2T
sdd1 1856G

md2 raid1 (sdc1, sdd1)

md2 luks (md2_crypt)

md2_crypt lvm (vg2)

vg2 media 4G (/dev/vg2/media)

/dev/vg2/media /mnt/media (btrfs)

None: KVM Host Disk Layout (last edited 2024-01-29 20:16:56 by Kristian Kallenberg)

-  ⇤ ← Revision 8 as of 2017-10-10 22:36:35 → 
  Size: 879
  Editor: shran
  Comment:
+   ← Revision 13 as of 2017-12-25 21:14:04 → ⇥
  Size: 1574
  Editor: Kristian Kallenberg
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 7:
+Mark your disks! Spend time finding your disks S/N. Put a physical sticker on the disk. In the future this will help you identify a failing disk.
-Line 42:
+Line 44:
-==== LVM volumes ====
+==== LVM Volumes ====
Initially the swap partition was 512M, but it ran full and was increased to 1G.
-Line 45:
+Line 48:
-vg1 root   2G (/dev/vg1/root)
vg1 swap 512M (/dev/vg1/swap)
+vg1 root 2G (/dev/vg1/root)
vg1 swap 1G (/dev/vg1/swap)
-Line 55:
+Line 58:
+=== KVM Host Disks for Guest Filesystem Images ===

==== Physical Disks and Partitions ====

{{{
sdc     2T
sdc1 1856G

sdd     2T
sdd1 1856G
}}}

==== Raid ====

{{{
md2 raid1 (sdc1, sdd1)
}}}

==== Luks ====

{{{
md2 luks (md2_crypt)
}}}

==== LVM ====

{{{
md2_crypt lvm (vg2)
}}}

==== LVM Volumes ====

{{{
vg2 media 4G (/dev/vg2/media)
}}}

==== Filesystems and Mountpoints ====
{{{
/dev/vg2/media /mnt/media (btrfs)
}}}