From 233e02823284c0b32f9a2aaf330a7ecb8dba7221 Mon Sep 17 00:00:00 2001 From: "iap10@labyrinth.cl.cam.ac.uk" Date: Fri, 5 Nov 2004 08:24:24 +0000 Subject: [PATCH] bitkeeper revision 1.1159.1.383 (418b38b8MlKiUmfFlHnkh4EOOU776Q) minor doc fixes --- docs/src/user.tex | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/docs/src/user.tex b/docs/src/user.tex index 65a2bb4f42..891db3d9a5 100644 --- a/docs/src/user.tex +++ b/docs/src/user.tex @@ -684,7 +684,7 @@ machine ID~1 you should type: \begin{quote} \begin{verbatim} -# xm create -c myvmconfig vmid=1 +# xm create -c myvmconf vmid=1 \end{verbatim} \end{quote} @@ -894,7 +894,14 @@ to filesystems stored on local disk when a domain is migrated. Administrators should choose an appropriate storage solution (i.e. SAN, NAS, etc.) to ensure that domain filesystems are also available on their destination node. GNBD is a good method for -exporting a volume from one machine to another, as is iSCSI. +exporting a volume from one machine to another. iSCSI can do a similar +job, but is more complex to set up. + +When a domain migrates, it's MAC and IP address move with it, thus it +is only possible to migrate VMs within the same layer-2 network and IP +subnet. If the destination node is on a different subnet, the +administrator would need to manually configure a suitable etherip or +IP tunnel in the domain 0 of the remote node. A domain may be migrated using the \path{xm migrate} command. To live migrate a domain to another machine, we would use @@ -1007,11 +1014,10 @@ Block devices should typically only be shared between domains in a read-only fashion otherwise the Linux kernel's file systems will get very confused as the file system structure may change underneath them (having the same ext3 partition mounted rw twice is a sure fire way to -cause irreparable damage)! \xend will attempt to prevent you from +cause irreparable damage)! \Xend will attempt to prevent you from doing this by checking that the device is not mounted read-write in domain 0, and hasn't already been exported read-write to another domain. - If you want read-write sharing, export the directory to other domains via NFS from domain0 (or use a cluster file system such as GFS or ocfs2). -- 2.30.2