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zipl tool calls sync(2) before exit, which may hang on attempts to flush not relevant problematic mounts (e.g. nfs) [1]. Complete any modification performed by zipl(8) tool with calling fsync(2), or syncfs(2). This allows to get rid of the mentioned sync(2) call. [1] https://github.com/openshift/os/issues/1720 Github-ID: https://github.com/ibm-s390-linux/s390-tools/pull/186 Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com> Reviewed-by: Stefan Haberland <sth@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>