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Created page with '= State when starting Lab 4 = When you are done Lab 4 you should have the following disk storage setup: * fedora1 This VM has a GUI and no free space in the...'
= State when starting Lab 4 =
When you are done [[OPS235 Lab 4|Lab 4]] you should have the following disk storage setup:
* fedora1
This VM has a GUI and no free space in the VG.
VG #PV #LV #SN Attr VSize VFree
vg_fedora1 1 2 0 wz--n- 9.80G 0
LV VG Attr LSize
lv_root vg_fedora1 -wi-ao 8.83G
lv_swap vg_fedora1 -wi-ao 992.00M
PV VG Fmt Attr PSize PFree
/dev/vda2 vg_fedora1 lvm2 a- 9.80G 0
* fedora2
This VM has a GUI and free space in the VG.
VG #PV #LV #SN Attr VSize VFree
vg_fedora2 1 3 0 wz--n- 9.80G 3.95G
LV VG Attr LSize
lv_home vg_fedora2 -wi-ao 1000.00M
lv_root vg_fedora2 -wi-ao 3.91G
lv_swap vg_fedora2 -wi-ao 992.00M
PV VG Fmt Attr PSize PFree
/dev/vda2 vg_fedora2 lvm2 a- 9.80G 3.95G
* fedora3
This VM has no GUI installed.
VG #PV #LV #SN Attr VSize VFree
vg_fedora3 1 3 0 wz--n- 9.80G 3.83G
LV VG Attr LSize
lv_home vg_fedora3 -wi-ao 1.00G
lv_root vg_fedora3 -wi-ao 4.00G
lv_swap vg_fedora3 -wi-ao 992.00M
PV VG Fmt Attr PSize PFree
/dev/vda2 vg_fedora3 lvm2 a- 9.80G 3.83G
* host (disk pack)
Four PVs, minimum VG size 60G
Single filesystem on vg_main/root, size 50G
At least 10G available space in VG
20% of disk space unallocated (min 15G)
== Logical Volume Management ==
{{Admon/note|Recovering VMs|Most of these investigations will take place in you virtual machines. If you make a significant mistake, your virtual machine may not boot. Remember that you created backups of your virtual machines in Lab 3, and you can restore them if something goes wrong.}}
=== Resources ===
=== Investigation 1: How are LVMs managed using system-config-lvm? ===
* On fedora2, perform some LVM operations using the system-config-lvm graphical tool:
** Determine the current LVM configuration.
** Grow the home filesystem to 2G
** Create a new 2G LV containing an ext4 filesystem named lv_archive and mount it at /archive
** Backup /etc into /archive
** Shrink lv_archive to 1G
** Try shrinking / and observe that it is not permitted
=== Investigation 2: How are LVMs managed from the command line? ===
* Repeat the operations from Investigation 1, using fedora3 (command-line tools only):
** Determine the current LVM configuration.
** Grow the home filesystem to 2G (lvextend, resize2fs)
** Create a new 2G LV containing an ext4 filesystem and mount it at /archive (lvcreate, mkfs, mount, edit fstab, reboot to confirm automatic mount)
** Backup /etc into /archive
** Shrink lv_archive to 1G (umount, resize2fs, lvreduce, resize2fs, mount)
** Try shrinking / and observe that it is not permitted
=== Investigation 3: How can a PV be added to an existing VG? ===
* Provision fedora1 with an additional 5G virtual disk
* Add that virtual disk to the existing volume group
* Create lv_home (1G), and migrate /home onto it (lvcreate, mkfs, mount, mv, rm, umount, edit fstab, mount)
=== Investigation 4: How can I use LVM to manage storage on my disk pack? ===
* This investigation will have less-detailed instructions -- they students should be able to apply and adapt what they learned in the first three investigations.
* On the host (disk pack):
** Create a new logical partition (minimum 5G, leaving at least 10G free space in the extended partition)
** Add that partition as a PV into the existing VG
** Grow the root filesystem to fill the available space (this will provide sufficient space for Investigation 5)
== Package Management ==
* Keep existing content.
== User/Group Management ==
* Keep existing content, add a requirement to create their Matrix user on fedora3 (forcing use of command-line tools).
When you are done [[OPS235 Lab 4|Lab 4]] you should have the following disk storage setup:
* fedora1
This VM has a GUI and no free space in the VG.
VG #PV #LV #SN Attr VSize VFree
vg_fedora1 1 2 0 wz--n- 9.80G 0
LV VG Attr LSize
lv_root vg_fedora1 -wi-ao 8.83G
lv_swap vg_fedora1 -wi-ao 992.00M
PV VG Fmt Attr PSize PFree
/dev/vda2 vg_fedora1 lvm2 a- 9.80G 0
* fedora2
This VM has a GUI and free space in the VG.
VG #PV #LV #SN Attr VSize VFree
vg_fedora2 1 3 0 wz--n- 9.80G 3.95G
LV VG Attr LSize
lv_home vg_fedora2 -wi-ao 1000.00M
lv_root vg_fedora2 -wi-ao 3.91G
lv_swap vg_fedora2 -wi-ao 992.00M
PV VG Fmt Attr PSize PFree
/dev/vda2 vg_fedora2 lvm2 a- 9.80G 3.95G
* fedora3
This VM has no GUI installed.
VG #PV #LV #SN Attr VSize VFree
vg_fedora3 1 3 0 wz--n- 9.80G 3.83G
LV VG Attr LSize
lv_home vg_fedora3 -wi-ao 1.00G
lv_root vg_fedora3 -wi-ao 4.00G
lv_swap vg_fedora3 -wi-ao 992.00M
PV VG Fmt Attr PSize PFree
/dev/vda2 vg_fedora3 lvm2 a- 9.80G 3.83G
* host (disk pack)
Four PVs, minimum VG size 60G
Single filesystem on vg_main/root, size 50G
At least 10G available space in VG
20% of disk space unallocated (min 15G)
== Logical Volume Management ==
{{Admon/note|Recovering VMs|Most of these investigations will take place in you virtual machines. If you make a significant mistake, your virtual machine may not boot. Remember that you created backups of your virtual machines in Lab 3, and you can restore them if something goes wrong.}}
=== Resources ===
=== Investigation 1: How are LVMs managed using system-config-lvm? ===
* On fedora2, perform some LVM operations using the system-config-lvm graphical tool:
** Determine the current LVM configuration.
** Grow the home filesystem to 2G
** Create a new 2G LV containing an ext4 filesystem named lv_archive and mount it at /archive
** Backup /etc into /archive
** Shrink lv_archive to 1G
** Try shrinking / and observe that it is not permitted
=== Investigation 2: How are LVMs managed from the command line? ===
* Repeat the operations from Investigation 1, using fedora3 (command-line tools only):
** Determine the current LVM configuration.
** Grow the home filesystem to 2G (lvextend, resize2fs)
** Create a new 2G LV containing an ext4 filesystem and mount it at /archive (lvcreate, mkfs, mount, edit fstab, reboot to confirm automatic mount)
** Backup /etc into /archive
** Shrink lv_archive to 1G (umount, resize2fs, lvreduce, resize2fs, mount)
** Try shrinking / and observe that it is not permitted
=== Investigation 3: How can a PV be added to an existing VG? ===
* Provision fedora1 with an additional 5G virtual disk
* Add that virtual disk to the existing volume group
* Create lv_home (1G), and migrate /home onto it (lvcreate, mkfs, mount, mv, rm, umount, edit fstab, mount)
=== Investigation 4: How can I use LVM to manage storage on my disk pack? ===
* This investigation will have less-detailed instructions -- they students should be able to apply and adapt what they learned in the first three investigations.
* On the host (disk pack):
** Create a new logical partition (minimum 5G, leaving at least 10G free space in the extended partition)
** Add that partition as a PV into the existing VG
** Grow the root filesystem to fill the available space (this will provide sufficient space for Investigation 5)
== Package Management ==
* Keep existing content.
== User/Group Management ==
* Keep existing content, add a requirement to create their Matrix user on fedora3 (forcing use of command-line tools).
