Hi All, On one of our servers running SmartOS, the 'iostat' hung and there're a bunch of stuck 'iostat' commands.
It seems everyone of them has the same kernel stack: stack pointer for thread ffffffbe78d0f3a0: ffffff0173d84380 [ ffffff0173d84380 _resume_from_idle+0xf4() ] ffffff0173d843b0 swtch+0x141() ffffff0173d843f0 cv_wait+0x70(ffffffbe78d0f58e, ffffffbe78d0f590) ffffff0173d84450 delay_common+0xb8(1) ffffff0173d84490 delay+0x30(1) ffffff0173d845a0 ufs_dirlook+0xbd(ffffff3284c2b778, ffffff0173d847a0, ffffff0173d845d0, ffffffc18e7bf918, 1, 0) ffffff0173d84640 ufs_lookup+0x191(ffffff3284b5da00, ffffff0173d847a0, ffffff0173d848e8, ffffff0173d84a70, 0, ffffff3257d44840, ffffffc18e7bf918, 0, 0, 0) ffffff0173d846f0 fop_lookup+0xa2(ffffff3284b5da00, ffffff0173d847a0, ffffff0173d848e8, ffffff0173d84a70, 0, ffffff3257d44840, ffffffc18e7bf918, 0, 0, 0) ffffff0173d84950 lookuppnvp+0x1f6(ffffff0173d84a70, 0, 1, 0, ffffff0173d84c88 , ffffff3257d44840, ffffff3257d44840, ffffffc18e7bf918) ffffff0173d849f0 lookuppnatcred+0x15e(ffffff0173d84a70, 0, 1, 0, ffffff0173d84c88, 0, ffffffc18e7bf918) ffffff0173d84af0 lookupnameatcred+0xad(8046e68, 0, 1, 0, ffffff0173d84c88, 0, ffffffc18e7bf918) ffffff0173d84b40 lookupnameat+0x39(8046e68, 0, 1, 0, ffffff0173d84c88, 0) ffffff0173d84cf0 vn_openat+0x315(8046e68, 0, 1, 1a4, ffffff0173d84e00, 0, ffffff0100000012, 0, 4) ffffff0173d84e60 copen+0x20c(ffd19553, 8046e68, 1, 1a4) ffffff0173d84e90 openat32+0x27(ffd19553, 8046e68, 0, 1a4) ffffff0173d84ec0 open32+0x25(8046e68, 0, 1a4) ffffff0173d84f10 _sys_sysenter_post_swapgs+0x149() Is this a known issue? how can I further debug this issue on the server? is there a way to break out of this stuckness? Thanks, -youzhong ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
