Winter Forest Sunrise
A Secret Place on this Earth
At first, we run a read-only badblocks scan on the device to find the corrupt blocks.
% badblocks /dev/sda 55575184 55575185 55575186 55575187 55575188 55575189 55575190 55575191 55575192 55575193 55575194 55575195 55575196 55575197 55575198 55575199
Now we know that block 55575184 - 55575199 are dead. If there are only a few blocks, it’s possible to replace these.
Change the interface name in
Using ip utility
ip link set eth1 down ip link set eth1 name wan0 ip link set wan0 up
I want to extend a running KVM Linux guest system with a physical hard drive. I’ve connected the new disk via
virsh attach-disk my_vm /dev/sdf vdc
to connect sdf to vdc, but inside the guest, nothing happens.
The solution is simple: attaching a new disk requires a new virtio block controller which is a PCI device. The trick is to rescan the PCI bus system to detect the new controller:
echo 1 > /sys/bus/pci/rescan
Now lspci shows the new controller and dmesg shows the new vdc block device.
00:08.0 SCSI storage controller: Red Hat, Inc Virtio block device
Simply load the both modules
then you don’t need to rescan the PCI bus.