Details
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Bug
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Resolution: Fixed
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Minor
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None
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None
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2.11.56
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3
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9223372036854775807
Description
currently lru_max_age only works when lru is enabled.
applied https://review.whamcloud.com/33371 otherwise we can't contorl number of locks correclty # lctl set_param ldlm.namespaces.*.lru_max_age=60000 # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=1 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 # ls -lR /fls/ost0/ # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=3199 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 wait 120 sec # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=3199 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 no cancel locks even time exceeds more than lru_max_age, but cancel when client access an file. # ls -l /fls/ost0/o0/d110838 -rw-r--r-- 1 root root 67108864 Oct 22 13:51 /fls/ost0/o0/d110838 # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=2072 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=2792 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0 # ls -l /fls/ost0/o0/d111531 -rw-r--r-- 1 root root 67108864 Oct 22 13:53 /fls/ost0/o0/d111531 # lctl get_param ldlm.namespaces.*.lock_count ldlm.namespaces.MGC10.0.11.78@o2ib10.lock_count=4 ldlm.namespaces.fls-MDT0000-mdc-ffff8cd7f7b25800.lock_count=1696 ldlm.namespaces.fls-OST0000-osc-ffff8cd7f7b25800.lock_count=2385 ldlm.namespaces.fls-OST0001-osc-ffff8cd7f7b25800.lock_count=0 ldlm.namespaces.fls-OST0002-osc-ffff8cd7f7b25800.lock_count=3200 ldlm.namespaces.fls-OST0003-osc-ffff8cd7f7b25800.lock_count=0
lru_max_age should behave same as enabling lru resize. at the end, regardless enabling or disabling lru resize meaning once it gets lru_max_age, locks need to be cancelled At the end, lru_size is like hard limit of number of locks, but still cancel locks by lru_max_age.
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