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--- docs:tips_n_tricks:xen.html [25.04.2022 12:48 CEST] – [Create new DomU] peter
+++ docs:tips_n_tricks:xen.html [13.08.2022 23:36 CEST] (current) – [Create new DomU] peter
@@ Line 60: / Line 60: @@
 </code>
+===== Matching physical and virtual Xen block (and other) devices and eventually their ids =====
+  xenstore-ls -f -s /local/domain/0/backend/vbd | egrep '(domain|frontend|dev|params) = '
+__References:__
+  * [[https://serverfault.com/a/259112|ukautz' answer]] to question [[https://serverfault.com/questions/153196/xen-find-vbd-id-for-physical-disks|"Xen find VBD id for physical disks" on Server Fault]].
+  * https://xenbits.xen.org/docs/4.9-testing/man/xenstore-ls.1.html
 ===== Turn a domU into a new dom0 running with serial console =====
@@ Line 101: / Line 109: @@
 mkdir /GRUB0
 mount LABEL="$HOSTNAME:GRUB0" /GRUB0/
-grub-install --boot-directory /GRUB0 /dev/sdb
+grub-install --boot-directory /GRUB0 --recheck /dev/sdb
-grub-install --boot-directory /GRUB0 /dev/sda
+grub-install --boot-directory /GRUB0 --recheck /dev/sda
 </code>
 <code grub /GRUB0/grub/grub.cfg>
@@ Line 198: / Line 206: @@
 to ''/etc/default/grub''
+<note warning>If you install GRUB from the new Dom0, make sure no outdated ''device.map'' is lying around. Best use the ''--recheck'' option to ''grub-install''</note>
 Manual steps:
 <code bash>
@@ Line 233: / Line 241: @@
 <code interfaces /etc/network/interfaces.d/ifrename>
 rename mac/00:16:3e:XX:XX:XX=vif0
-# rename enpXsY=eth0 # use this if you expect the network card to be replaced by another one of same type
+# rename mac/aa:bb:cc:??:??:??=eth0 # use this if you expect the network card to be replaced by another one of same type
 rename mac/aa:bb:cc:dd:ee:ff=eth0
 </code>