unix:lvm_recovery
Differences
This shows you the differences between two versions of the page.
|
unix:lvm_recovery [2011/10/23 15:03] robm created |
unix:lvm_recovery [2013/08/20 22:54] |
||
|---|---|---|---|
| Line 1: | Line 1: | ||
| - | ====== Recovering my lost data: LVM and RAID ====== | ||
| - | |||
| - | So I upgraded Ubuntu 9.10 to Ubuntu 11.10 by _replacing_ my installation, | ||
| - | |||
| - | ===== About the file-system: | ||
| - | |||
| - | There are many layers of indirection between the file-system and the physical storage when using LVM or RAID. When using both, the number of layers can seem excessive. Here's a diagram of the layers involved in my (lost) setup: | ||
| - | |||
| - | < | ||
| - | digraph G { | ||
| - | fs_store [label=" | ||
| - | lv_store [label=" | ||
| - | vg_store [label=" | ||
| - | pv_store [label=" | ||
| - | md0 [label=" | ||
| - | sdb1 [label=" | ||
| - | sdc1 [label=" | ||
| - | sdd1 [label=" | ||
| - | sde1 [label=" | ||
| - | sdf1 [label=" | ||
| - | sdb [label=" | ||
| - | sdc [label=" | ||
| - | sdd [label=" | ||
| - | sde [label=" | ||
| - | sdf [label=" | ||
| - | |||
| - | sdb1 -> sdb | ||
| - | sdc1 -> sdc | ||
| - | sdd1 -> sdd | ||
| - | sde1 -> sde | ||
| - | sdf1 -> sdf | ||
| - | md0 -> {sdb1 sdc1 sdd1 sde1 sdf1} | ||
| - | pv_store -> md0 | ||
| - | vg_store -> pv_store | ||
| - | lv_store -> vg_store | ||
| - | fs_store -> lv_store | ||
| - | } | ||
| - | </ | ||
| - | |||
| - | Note that the RAID block device, '' | ||
| - | |||
unix/lvm_recovery.txt · Last modified: 2013/08/20 22:54 (external edit)
Page Tools
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 4.0 International
