Segment Server Goes Unresponsive and is Failed Over Due to Quota Bug

Segment Server Goes Unresponsive and is Failed Over Due to
Quota Bug
Solution ID: 51
Created: 8/20/2008
DETAILS:
Issue:
Segment server goes unresponsive and is failed over. You will see the following back trace in
the crashdump as all i_adm_server threads will be in an unresponsive state (UN).
PID: 6654 TASK: ffff81085f775820 CPU: 0 COMMAND: "i_adm_server_6"
#0 [ffff81085f80dc60] schedule at ffffffff80060f29
#1 [ffff81085f80dd48] __down at ffffffff800629b6
#2 [ffff81085f80dda8] __down_failed at ffffffff80062674
#3 [ffff81085f80ddf8] .text.lock.ibr_stub at ffffffff88c1bfda (via IBR2OS_down)
#4 [ffff81085f80de08] DQ_QUOTA_LIST_GET at ffffffff88bc345c
#5 [ffff81085f80de78] ibr_dispatch at ffffffff88909559
#6 [ffff81085f80dec8] ibr_svc_process at ffffffff888d9492
#7 [ffff81085f80df18] ibrix_admin_servers_thread at ffffffff888da944
#8 [ffff81085f80df48] kernel_thread at ffffffff8005bfb1
Solution:
Disable quotas on all file systems. This is a deadlock issue that affects all versions of IBRIX.
Ibrix_S0000051.pdf
Last modified: 8/20/2008