2 results about "File descriptor" patented technology

The invention provides a file descriptor leak detection method and device. The method comprises the steps that target process identification of a to-be-detected target process in a monitoring set is obtained; process identification of the process needing to be subjected to file descriptor leak detection is recorded in the monitoring set; the number of file descriptors of the target process in thecurrent cycle is counted; according to the number, counted in the current cycle, of the file descriptors, whether or not file descriptors leak in the target process is determined; if yes, alert logs are output to a corresponding client. Accordingly, file descriptor leak detection can be achieved.

The invention discloses a virtual machine startup and shutdown method and device, an apparatus and a medium. The method comprises the steps of obtaining a file descriptor of an external bitmap carrierfile when a virtual machine is shut down, and writing the bitmap information into the external bitmap carrier file through the file descriptor, wherein the bitmap information is a bitmap for recording dirty data of a virtual disk; when the virtual machine is started, obtaining the file descriptor, and acquiring the bitmap information from the external bitmap carrier file through the file descriptor, generating a corresponding bitmap according to the bitmap information, continuously recording the virtual disk dirty data generated in the startup period by using the bitmap, and performing incremental backup on the virtual disk data by using the current bitmap information, so that the problem of bitmap loss caused by virtual machine shutdown is avoided, a virtual machine disk in any format issupported, and the incremental backup can be continuously carried out on the data by utilizing the imported bitmap information, and accordingly the data backup efficiency of the virtual machine is improved.