Re: convert logical sector -> physical sector + pv/vg extent number
Andy Smith <[email protected]>
| Newsgroups | gmane.linux.lvm.general |
|---|---|
| Message-ID | <[email protected]> |
Hi Roland, On Sun, Jan 02, 2022 at 08:00:30PM +0100, Roland wrote: > if i have a logical sector/block "x" on a lvm logical volume , is there > a way to easily calculate/determine (optimally by script/cli) the > corresponding physical sector of the physical device it belongs to and > the extent number of the appropiate pv/vg where it resides ? lvdisplay --maps /path/to/lv tells you all the mappings of logical extents within the LV to physical extents within the PV. pvdisplay --units s /dev/yourpv | grep 'PE Size' tells you the size of a physical extent in sectors. Between those you can work out the sector number on the physical device for a sector number on a logical volume. Cheers, Andy _______________________________________________ linux-lvm mailing list [email protected] https://listman.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/