Hello,
We are having a very strange issue on one of servers. The issue is that
fcntl locking over NFS returns 'no locks available' immediately.
dtrace shows that bindresvport() returns error code 125 (EADDRINUSE):
# dtrace -n 'fbt:rpcmod:bindresvport:return /arg1 != 0/ {stack();
printf("ret = %d", arg1);}'
9 52692 bindresvport:return
rpcmod`connmgr_get+0x560
rpcmod`connmgr_wrapget+0x63
rpcmod`clnt_cots_kcallit+0x198
rpcmod`rpcbind_getaddr+0x245
klmmod`update_host_rpcbinding+0x4f
klmmod`nlm_host_get_rpc+0x6d
klmmod`nlm_do_lock+0x10d
klmmod`nlm4_lock_4_svc+0x2a
klmmod`nlm_dispatch+0xe6
klmmod`nlm_prog_4+0x34
rpcmod`svc_getreq+0x1c1
rpcmod`svc_run+0x146
rpcmod`svc_do_run+0x8e
nfs`nfssys+0xf1
unix`_sys_sysenter_post_swapgs+0x149
ret = 125
netstat shows that 501 reserved ports are in BOUND state:
# netstat -an | grep BOUND
*.935 *.* 0 0 1049740 0 BOUND
*.801 *.* 0 0 1049740 0 BOUND
*.798 *.* 0 0 1049740 0 BOUND
*.561 *.* 0 0 1049740 0 BOUND
*.613 *.* 0 0 1049740 0 BOUND
....
# netstat -an | grep BOUND | wc -l
501
Has anyone seen this similar issue? is it possible to unbind those reserved
ports? Rebooting the server is our last resort.
Any advice would be very much appreciated.
Thanks,
-Youzhong
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