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| author | Steve Sistare <steven.sistare@oracle.com> | 2023-09-08 07:22:10 -0700 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2023-10-04 13:16:58 +0200 |
| commit | 2a9e2e595f2bc81c07e2f06ef9ba7d4c68897f1c (patch) | |
| tree | 9737946cbcc59a268faa9c186e3cf4e4a3eaf8dc /qemu-options.hx | |
| parent | b28e3ecf0de1bc77b6a1a520e3c223f37b5afce2 (diff) | |
| download | focaccia-qemu-2a9e2e595f2bc81c07e2f06ef9ba7d4c68897f1c.tar.gz focaccia-qemu-2a9e2e595f2bc81c07e2f06ef9ba7d4c68897f1c.zip | |
migration: file URI
Extend the migration URI to support file:<filename>. This can be used for any migration scenario that does not require a reverse path. It can be used as an alternative to 'exec:cat > file' in minimized containers that do not contain /bin/sh, and it is easier to use than the fd:<fdname> URI. It can be used in HMP commands, and as a qemu command-line parameter. For best performance, guest ram should be shared and x-ignore-shared should be true, so guest pages are not written to the file, in which case the guest may remain running. If ram is not so configured, then the user is advised to stop the guest first. Otherwise, a busy guest may re-dirty the same page, causing it to be appended to the file multiple times, and the file may grow unboundedly. That issue is being addressed in the "fixed-ram" patch series. Signed-off-by: Steve Sistare <steven.sistare@oracle.com> Tested-by: Michael Galaxy <mgalaxy@akamai.com> Reviewed-by: Michael Galaxy <mgalaxy@akamai.com> Reviewed-by: Fabiano Rosas <farosas@suse.de> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Message-ID: <1694182931-61390-2-git-send-email-steven.sistare@oracle.com>
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 9ce8a5b957..93e638c097 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -4706,6 +4706,7 @@ DEF("incoming", HAS_ARG, QEMU_OPTION_incoming, \ " prepare for incoming migration, listen on\n" \ " specified protocol and socket address\n" \ "-incoming fd:fd\n" \ + "-incoming file:filename\n" \ "-incoming exec:cmdline\n" \ " accept incoming migration on given file descriptor\n" \ " or from given external command\n" \ @@ -4722,7 +4723,10 @@ SRST Prepare for incoming migration, listen on a given unix socket. ``-incoming fd:fd`` - Accept incoming migration from a given filedescriptor. + Accept incoming migration from a given file descriptor. + +``-incoming file:filename`` + Accept incoming migration from a given file. ``-incoming exec:cmdline`` Accept incoming migration as an output from specified external |