weizhouapache commented on issue #3900: 4.14 systemvm root disk size URL: https://github.com/apache/cloudstack/pull/3900#issuecomment-588890755 @rhtyd if the specified value is small than template size, then it will not be used. "-1" and "0" makes no difference actually. ``` Long size = _tmpltMgr.getTemplateSize(template.getId(), vm.getDataCenterId()); if (rootDisksize != null) { rootDisksize = rootDisksize * 1024 * 1024 * 1024; if (rootDisksize > size) { s_logger.debug("Using root disk size of " + rootDisksize + " Bytes for volume " + name); size = rootDisksize; } else { s_logger.debug("Using root disk size of " + size + " Bytes for volume " + name + "since specified root disk size of " + rootDisksize + " Bytes is smaller than template"); } } ``` https://github.com/apache/cloudstack/blob/master/engine/orchestration/src/main/java/org/apache/cloudstack/engine/orchestration/VolumeOrchestrator.java#L713-L722
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