Re: Where are the data blocks of an LV?
Stuart D Gathman <[email protected]>
| Newsgroups | gmane.linux.lvm.general |
|---|---|
| Message-ID | <[email protected]> |
Checkout https://github.com/sdgathman/lbatofile It was written to identify the file affected by a bad block (so it goes the opposite direction), but the getpvmap() function obtains pe_start and pe_size plus the list of segments. findlv() goes through the segments to find the one an absolute sector is in. That should tell you what you want to know. On Fri, 22 Jul 2022, Marcin Owsiany wrote: > I know that it is possible to find where a given logical volume's extents > start on a PVs thanks to the information printed by lvdisplay --maps. > > I was also able to experimentally establish that the actual data of an LV > starts one megabyte after that location. Is that offset documented anywhere, > or can I somehow discover it at runtime for a given LV? _______________________________________________ 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/