diff options
| author | Peter Lieven <pl@kamp.de> | 2017-01-31 16:36:34 +0100 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2017-03-16 12:10:41 -0500 |
| commit | d5506b31281ce3e89b76aa64ec9295db0691babc (patch) | |
| tree | ccae0f5266657fbd7b821fc828fa730a0c2cd5f3 | |
| parent | 823fb688ebc52a7d79c1308acb28c92b56820167 (diff) | |
qga: ignore EBUSY when freezing a filesystem
the current implementation fails if we try to freeze an
already frozen filesystem. This can happen if a filesystem
is mounted more than once (e.g. with a bind mount).
Suggested-by: Christian Theune <ct@flyingcircus.io>
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
(cherry picked from commit ce2eb6c4a044d809caf4dc4e08aed77678f9760e)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
| -rw-r--r-- | qga/commands-posix.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/qga/commands-posix.c b/qga/commands-posix.c index ea37c097cf..73d93eb5ce 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -1243,6 +1243,9 @@ int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, * filesystems may not implement fsfreeze for less obvious reasons. * these will report EOPNOTSUPP. we simply ignore these when tallying * the number of frozen filesystems. + * if a filesystem is mounted more than once (aka bind mount) a + * consecutive attempt to freeze an already frozen filesystem will + * return EBUSY. * * any other error means a failure to freeze a filesystem we * expect to be freezable, so return an error in those cases @@ -1250,7 +1253,7 @@ int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, */ ret = ioctl(fd, FIFREEZE); if (ret == -1) { - if (errno != EOPNOTSUPP) { + if (errno != EOPNOTSUPP && errno != EBUSY) { error_setg_errno(errp, errno, "failed to freeze %s", mount->dirname); close(fd); |