Hello Experts,

I have an usb drive attached to my server. I use the driver with LVM. When the drive is switched on at server start up my dev directory is updated accordingly (I got the entry /dev/VolGroup01/.... ; but when I switch on the server and later on attach the usb drive and switch it on I can´t use it through LVM because the drive never appears under /dev/mapper/ or /dev/ even tough dmesg says that a drive was found and attached to sdb.

My lvm configuration looks like below.

Question is how to let mapper know that I just attached a usb drive that was previously configured with lvm?

thank you

regards

--- Volume group ---
VG Name VolGroup01
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 24
VG Access read/write
VG Status resizable
MAX LV 256
Cur LV 4
Open LV 0
Max PV 256
Cur PV 1
Act PV 1
VG Size 1.36 TB
PE Size 4.00 MB
Total PE 357699
Alloc PE / Size 158720 / 620.00 GB
Free PE / Size 198979 / 777.26 GB
VG UUID hty1Jg-HfdE-m2yl-w7vQ-XsF1-IEee-Y4mkLP

--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 45
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 4
Open LV 4
Max PV 0
Cur PV 1
Act PV 1
VG Size 419.06 GB
PE Size 32.00 MB
Total PE 13410
Alloc PE / Size 13410 / 419.06 GB
Free PE / Size 0 / 0
VG UUID RU2vwR-i7WS-gO68-WTOa-93hw-ZAjY-Q0uVXP

vgscan, and maybe also lvscan, but in that order.

man lvm, vgscan, lvscan.