Hello,<br>sorry for the off-topic.<br>Tipically when I work with LVM on Linux (RHEL/CentOS 5 and/or Fedora 11/12), I create the physical volume directly on the whole disk.<br>Historically one created a partition on the disk, eventually big as the whole disk and then marked it as 8e type (LVM), and then the PV on the partition.<br>
With recent kernels/LVM2 user tools it became safe/normal to create it directly on disk device, and so I normally do.<br><br>What about same thing for ext3 filesystem?<br>So creating for example an ext3 filesystem directly on the /dev/sda device?<br>
Does this imply any risk/problem?<br><br>Does it change anything if the underlying device is instead managed by device-mapper-multipath, so for example the device name is /dev/mapper/mpath1?<br><br>I ask because, used with creating PVs, VGs and LVs, today I had to create a plain filesystem on mpath device and forgot to create a partition on it but issued the mkfs command directly on it... and then mounted it... now I have this doubt<br>
<br>Thanks in advance for any hints/ suggestions.<br><br>Gianluca <br>