In the actual production environment, Overlayfs often occurs some problems, such as continuous growth of quota statistics. There is no good way to define this category for the current environment. Overlayfs has many restrictions in the actual use process but it has not directly restricted at the code level. Therefore, some strange problems introduced in operation errors will occur during the use process. It is time-consuming. Based on this background, Overlayfs's maintenance function needs to be enhanced.
This patch add sysfs file for overlayfs to recording the mount information. The sysfs file will be deleted only when Overlayfs is truly unloaded.
Idea:
Add the directory of overlayfs under the directory "/sys/fs/", and the directory records the mount information of each mount point, and the corresponding directory under the directory will be deleted only when the overlayfs is really unmounted.
The directory structure is conceived as follows, where the directory name composition structure is: "merge_primary_secondary_device_number"
In the actual production environment, Overlayfs often occurs some problems, such as continuous growth of quota statistics. There is no good way to define this category for the current environment. Overlayfs has many restrictions in the actual use process but it has not directly restricted at the code level. Therefore, some strange problems introduced in operation errors will occur during the use process. It is time-consuming. Based on this background, Overlayfs's maintenance function needs to be enhanced.
This patch add sysfs file for overlayfs to recording the mount information. The sysfs file will be deleted only when Overlayfs is truly unloaded.
Idea:
Add the directory of overlayfs under the directory "/sys/fs/", and the directory records the mount information of each mount point, and the corresponding directory under the directory will be deleted only when the overlayfs is really unmounted.
The directory structure is conceived as follows, where the directory name composition structure is: "merge_primary_secondary_device_number"
