The disk/by-diskseq symlink should not be shared with multiple block devices. Hence, it is not necessary to create stack directory for the symlink that manages which device owns the symlink. This is not just a optimization. If a service unit tries to mount a disk image but the service fails, then the diskseq of the loop device for the image may be continuously increased during restart, and inodes in /run may increase rapidly, as the stack directories are cleaned up only when udev queue is empty. Fixes #34637. (cherry picked from commit 09373c1a50297079e6b0447ea97af4e9a60f77fa)
System and Service Manager
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