<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <body> <div dir="auto"> <div dir="auto">See <a href="https://talk.manageiq.org/t/lvm-internals-structures-disk-layout/1328">https://talk.manageiq.org/t/lvm-internals-structures-disk-layout/1328</a></div><div dir='auto'><br></div> <div id="aqm-original" style="color: black;">  <div class="aqm-original-body"> <div style="color: black;"> <p style="color: black; font-size: 10pt; font-family: sans-serif; margin: 8pt 0;">On 26 July 2022 09:16:31 Marcin Owsiany <marcin@owsiany.pl> wrote:</p> <blockquote type="cite" class="gmail_quote" style="margin: 0 0 0 0.75ex; border-left: 1px solid #808080; padding-left: 0.75ex;"> <div dir="auto">Hello,<div dir="auto"><br></div><div dir="auto">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.</div><div dir="auto"><br></div><div dir="auto">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?</div><div dir="auto"><br></div><div dir="auto">regards,</div><div dir="auto">Marcin</div></div> <div>_______________________________________________</div> <div>linux-lvm mailing list</div> <div><a class="aqm-autolink aqm-autowrap" href="mailto:linux-lvm%40redhat.com">linux-lvm@redhat.com</a></div> <div><a class="aqm-autolink aqm-autowrap" href="https://listman.redhat.com/mailman/listinfo/linux-lvm">https://listman.redhat.com/mailman/listinfo/linux-lvm</a></div> <div>read the LVM HOW-TO at <a class="aqm-autolink aqm-autowrap" href="http://tldp.org/HOWTO/LVM-HOWTO/">http://tldp.org/HOWTO/LVM-HOWTO/</a></div> <div><br></div> </blockquote> </div> </div>  </div><div dir="auto"><br></div> </div></body> </html>