- Minor
While copying files from my disk array to my cache pool using the Unraid file manager, I found that the same file seems to be copied multiple times redundantly. This doesn't seem to happen every time, but I've witnessed it several times now while moving files to and from my cache pool and storage array. I'm also thinking this feature request is actually unintentional behavior now.
This is what I did one of the times I saw this occur. I selected a directory to copy from /mnt/disk3. The directory contains a couple subdirectories and about a dozen files total. Most of the files are small, but one of the files is ~750 GB. I selected to copy to /mnt/cache and selected "use sparse option", as the large file is a .qcow2 disk image, vdisk1.qcow2. The copy operation progress displayed and the operation eventually completed. But I still found that there was unusual disk activity.
Looking in the destination directory under /mnt/cache, I saw two files named similarly to .vdisk1.qcow2.g81E4S (the last 6 characters being unique to each file) in addition to the ~750 GB copied vdisk1.qcow2. Each of these additional hidden files were several hundred GBs and growing. Running htop, I could see there were 4 rsync processes that were still running, despite the file manager job having completed. I watched as the bigger of the .vdisk1.img.###### files reached the vdisk1.qcow2 ~750 GB size and disappeared. Two of the rsync processes completed at this same time. Then the next .vdisk1.img.###### file reached the ~750 GB size and disappeared as well, along with the other two rsync processes.
I haven't been able to consistently reproduce this buggy behavior, but again I've witnessed it several times. Another time I saw the behavior was when my system crashed during a file move operation. When I observed the state of one of the destination directories, I once again observed a copied vdisk1.img file, as well as four .vdisk1.img.###### files, all of different sizes less than the size of vdisk1.img.