LVM a df

Brukner, Ludek Ludek.Brukner na maniabarco.com
Středa Srpen 6 10:17:52 CEST 2003


> Udajne pomoci LVM spojil disky /dev/hdb a /dev/sda a ma je jako
> /dev/datadisk.
> Ted se pta, proc mu df nevypisuje misto na tech spojenych discich. Ja o
LVM
> nic nevim, ale predpokladal jsem, ze to melo vytvorit nejake zarizeni,
ktere
> by se nemountovalo do nejakeho adresare. Coz on nema. Pristupuje primo do
> /dev/datadisk
> mount mu nevypise ty spojene disky
> mount /dev/datadisk /mnt/datadisk ohlasi, ze /dev/datadisk neni block
device
> Jedna se o SuSE Linux 8.0 (i386)

Jen pro priblizeni - detaily viz dokumentace.

Disk (/dev/sda) se deli na partitions (/dev/sda1, /dev/sda3 atp.). 

LVM vytvori "virtualni disk" (/dev/datadisk, coz je nazvoslovi LVM volume
group), na kterem je treba vytvorit "virtualni partition"
(/dev/datadisk/jmeno_partition - v LVM se jmenuje logical volume).

To bylo to jednoduche, protoze ted to zkomplikujeme :-) Ten volume group
(virtualni disk) se totiz sklada z fyzickych partitions (/dev/sdX).

Kdyby bylo potreba, tak nekde vyhrabu poznamky, jak jsem to kdysi
zprovoznoval.

Ludek Brukner
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