[LU-14819] reduce credits for snapshot operations

• Type: Bug
• Resolution: Won't Fix
• Priority: Minor
• Severity: 3
• Assignee: WC Triage
• Reporter: Wang Shilong (Inactive)

Description

Initially, snapshot creation/destroy, we used 100 hard-coded credits, this is over-reservation, especially considering it will be amplified more than 20 times.

Let's try to use correct credits for those operations.