[LU-5521] grant errors during soak testing with message drop

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.7.0
• Affects Version/s: Lustre 2.7.0
• Severity: 3
• Assignee: Johann Lombardi (Inactive)
• Reporter: Johann Lombardi (Inactive)

Description

We regularly notice the following error in the client logs during soak testing with message drop on routers:

LustreError: 7110:0:(osc_cache.c:1565:osc_enter_cache()) soaked-OST0001-osc-ffff88083651dc00: grant { dirty: 8192/8192 dirty_pages: 8192/4096729 dropped: 0 avail: 12132352, reserved: 0, flight: 9 }lru {in list: 1365510, left: 8194, waiters: 0 }try to reserve 4096.