linux异常情况，排除中

[root@db ~]#? fuser -cu /backup
Specified filename /backup does not exist.
[root@db ~]#? umount -l /bacup
umount: /bacup: mountpoint not found
[root@db ~]#??? mkdir /backup
[root@db ~]#? fuser -cu /backup/
/backup:???????????????? 1rce(root)???? 2rc(root)???? 4rc(root)???? 5rc(root)???? 7rc(root)???? 8rc(root)???? 9rc(root)??? 10rc(root)??? 11rc(root)??? 12rc(root)??? 13rc(root)??? 14rc(root)??? 15rc(root)??? 16rc(root)??? 17rc(root)??? 19rc(root)??? 20rc(root)??? 21rc(root)??? 22rc(root)??? 23rc(root)??? 25rc(root)??? 26rc(root)??? 27rc(root)??? 28rc(root)??? 29rc(root)??? 31rc(root)??? 32rc(root)??? 33rc(root)??? 34rc(root)??? 35rc(root)??? 37rc(root)??? 38rc(root)??? 39rc(root)??? 40rc(root)??? 41rc(root)??? 43rc(root)??? 44rc(root)??? 45rc(root)??? 46rc(root)??? 47rc(root)??? 49rc(root)??? 50rc(root)??? 51rc(root)??? 52rc(root)??? 53rc(root)??? 55rc(root)??? 56rc(root)??? 57rc(root)??? 58rc(root)??? 59rc(root)??? 61rc(root)??? 62rc(root)??? 63rc(root)??? 64rc(root)??? 65rc(root)??? 67rc(root)??? 68rc(root)??? 69rc(root)??? 70rc(root)??? 71rc(root)??? 73rc(root)??? 74rc(root)??? 75rc(root)??? 76rc(root)??? 77rc(root)??? 79rc(root)??? 80rc(root)??? 81rc(root)??? 82rc(root)??? 83rc(root)??? 85rc(root)??? 87rc(root)??? 88rc(root)??? 89rc(root)??? 90rc(root)??? 92rc(root)??? 93rc(root)??? 94rc(root)??? 95rc(root)??? 96rc(root)??? 98rc(root)??? 99rc(root)?? 100rc(root)?? 101rc(root)?? 102rc(root)?? 104rc(root)?? 105rc(root)?? 106rc(root)?? 107rc(root)?? 108rc(root)?? 110rc(root)?? 111rc(root)?? 112rc(root)?? 113rc(root)?? 114rc(root)?? 116rc(root)?? 117rc(root)?? 118rc(root)?? 119rc(root)?? 120rc(root)?? 122rc(root)?? 123rc(root)?? 124rc(root)?? 125rc(root)?? 126rc(root)?? 128rc(root)?? 129rc(root)?? 130rc(root)?? 131rc(root)?? 132rc(root)?? 134rc(root)?? 135rc(root)?? 136rc(root)?? 137rc(root)?? 138rc(root)?? 140rc(root)?? 141rc(root)?? 142rc(root)?? 143rc(root)?? 144rc(root)?? 146rc(root)?? 147rc(root)?? 148rc(root)?? 149rc(root)?? 150rc(root)?? 152rc(root)?? 156rc(root)?? 159rc(root)?? 160rc(root)?? 161rc(root)?? 162rc(root)?? 163rc(root)?? 164rc(root)?? 165rc(root)?? 166rc(root)?? 167rc(root)?? 168rc(root)?? 179rc(root)?? 180rc(root)?? 181rc(root)?? 182rc(root)?? 184rc(root)?? 185rc(root)?? 186rc(root)?? 236rc(root)?? 249rc(root)?? 251rc(root)?? 252rc(root)?? 254rc(root)?? 255rc(root)?? 256rc(root)?? 257rc(root)?? 278rc(root)?? 697rc(root)?? 715rm(oracle)?? 810rm(oracle)?? 819rm(oracle)?? 872rm(oracle)? 1028rm(oracle)? 1061rm(oracle)? 1356rm(oracle)? 1478rm(oracle)? 1645rc(root)? 1881rc(root)? 2049rc(root)? 2120rc(root)? 2124rc(root)? 2130rc(root)? 2131rc(root)? 2283rc(root)? 2587rm(oracle)? 2626rm(oracle)? 2848rc(root)? 2849rc(root)? 2850rc(root)? 2884rc(root)? 2885rc(root)? 2886rc(root)? 2887rc(root)? 2888rc(root)? 2896rc(root)? 2897rc(root)? 3009rc(root)? 3012rc(root)? 3015rc(root)? 3028rc(root)? 3029rc(root)? 3032rc(root)? 3050rc(root)? 3059rc(root)? 3071rc(root)? 3072rc(root)? 3074rc(root)? 3075rc(root)? 3076rc(root)? 3077rc(root)? 3078rc(root)? 3079rc(root)? 3127rc(root)? 3157rce(root)? 3192rce(root)? 3196rc(root)? 3197rc(root)? 3198rc(root)? 3199rc(root)? 3206rce(root)? 3806rm(oracle)? 4052rm(oracle)? 4229rc(root)? 4335rce(root)? 4355rce(root)? 4508rc(root)? 4726rm(oracle)? 4732rce(root)? 4752rce(root)? 4878rm(oracle)? 5048rm(oracle)? 5072rm(oracle)? 5074rm(oracle)? 5131rm(oracle)? 5155rm(oracle)? 5275rc(root)? 5323rc(root)? 5337rm(oracle)? 5352rm(oracle)? 5415rm(oracle)? 5424rm(oracle)? 5436rc(root)? 5549rc(root)? 5550rc(root)? 5551rc(root)? 5552rc(root)? 5553rc(root)? 5554rc(root)? 5555rc(root)? 5556rc(root)? 5617rc(root)? 5622rc(root)? 5635rm(oracle)? 5653rm(oracle)? 5656rm(oracle)? 5690rm(oracle)? 5705rc(root)? 5706rc(root)? 5709rm(oracle)? 5711rm(oracle)? 5714rm(oracle)? 5717rm(oracle)? 5718rc(root)? 5720rm(oracle)? 5724rc(root)? 5726rc(root)? 5748rm(oracle)? 5767rm(oracle)? 5827rm(oracle)? 5857rc(root)? 5858rc(root)? 5859rc(root)? 5860rc(root)? 5861rc(root)? 5862rc(root)? 5863rc(root)? 5864rc(root)? 5896rc(root)? 5897rc(root)? 5903rce(root)? 5905rce(root)? 5910rce(root)? 5912rc(root)? 5913rm(oracle)? 5932rce(root)? 5933rce(root)? 5935rce(root)? 5937rce(root)? 5940rce(rpc)? 5944rc(root)? 5947rc(root)? 5948rc(root)? 5951rm(oracle)? 5952rc(root)? 5967rm(oracle)? 5970rce(root)? 5971rce(avahi)? 5975rce(root)? 5976rce(polkitd)? 5978e(rtkit)? 5979rce(root)? 5980rce(root)? 5983rce(root)? 5987rce(chrony)? 5988rm(oracle)? 5990rce(root)? 5999rce(root)? 6000rce(libstoragemgmt)? 6001rce(dbus)? 6002rm(oracle)? 6005rm(oracle)? 6006rce(root)? 6007rce(root)? 6008rce(root)? 6009rce(root)? 6010rce(root)? 6011rce(root)? 6040rm(oracle)? 6046rm(oracle)? 6052rm(oracle)? 6068rm(oracle)? 6070rm(oracle)? 6144rce(avahi)? 6195rce(root)? 6197rc(root)? 6200rc(root)? 6251rce(postfix)? 6252rce(root)? 6253rce(root)? 6282rm(oracle)? 6284rm(oracle)? 6313rm(oracle)? 6316rm(oracle)? 6326rce(root)? 6353rce(root)? 6354rce(root)? 6355rce(root)? 6356rce(root)? 6357rce(root)? 6358rce(root)? 6361rm(oracle)? 6364rce(root)? 6365rce(root)? 6366rce(root)? 6394rce(root)? 6401rm(oracle)? 6410rce(root)? 6411rm(oracle)? 6481rc(root)? 6514rc(root)? 6598rm(oracle)? 6654rce(root)? 6661rce(root)? 6662rc(root)? 6663rc(root)? 6664rc(root)? 6665rc(root)? 6666rc(root)? 6667rc(root)? 6668rc(root)? 6672rc(root)? 6673rc(root)? 6674rc(root)? 6675rc(root)? 6676rc(root)? 6677rc(root)? 6678rc(root)? 6679rc(root)? 6680rc(root)? 6681rc(root)? 6682rc(root)? 6684rc(root)? 6685rc(root)? 6686rc(root)? 6687rc(root)? 6688rc(root)? 6690rc(root)? 6693rce(root)? 6705rm(oracle)? 6707rc(root)? 6739rce(root)? 6762rm(oracle)? 6764rce(root)? 6766rm(oracle)? 6771rm(oracle)? 6792rm(oracle)? 6810rm(oracle)? 6812rm(oracle)? 6814rm(oracle)? 6991rm(oracle)? 6994rm(oracle)? 7026rm(oracle)? 7066rm(oracle)? 7069rm(oracle)? 7201rm(oracle)? 7288rm(oracle)? 7290rm(oracle)? 7341rm(oracle)? 7346rm(oracle)? 7365rm(oracle)? 7367rm(oracle)? 7370rm(oracle)? 7374rce(root)? 7375rce(root)? 7378rce(root)? 7390rce(root)? 7402rm(oracle)? 7405rm(oracle)? 7427rce(root)? 7506rm(oracle)? 7590rm(oracle)? 7612rce(root)? 7615rm(oracle)? 7617rm(oracle)? 7631rce(postfix)? 7645rm(oracle)? 7667rm(oracle)? 7670rm(oracle)? 7698rm(oracle)? 7700rm(oracle)? 7764rc(root)? 7875rm(oracle)? 7963rm(oracle)? 7972rce(root)? 7973rce(root)? 7997rm(oracle)? 8047rm(oracle)? 8052rm(oracle)? 8165rm(oracle)? 8275rm(oracle)? 8295rm(oracle)? 8298rm(oracle)? 8317rm(oracle)? 8348rm(oracle)? 8525rm(oracle)? 8568rm(oracle)? 8571rm(oracle)? 8597rm(oracle)? 8600rm(oracle)? 8602rm(oracle)? 8604rm(oracle)? 8623rm(oracle)? 8645rm(oracle)? 8647rm(oracle)? 8690rm(oracle)? 8702rce(root)? 8834rm(oracle)? 8837rm(oracle)? 8839rm(oracle)? 8850rm(oracle)? 8868rm(oracle)? 8898rm(oracle)? 8922rm(oracle)? 8927rm(oracle)? 8931rm(oracle)? 8957rm(oracle)? 8959rm(oracle)? 9131rm(oracle)? 9149rm(oracle)? 9160rm(oracle)? 9169rm(oracle)? 9172rm(oracle)? 9190rm(oracle)? 9210rm(oracle)? 9223rm(oracle)? 9337rc(root)? 9338rc(root)? 9405rm(oracle)? 9415rm(oracle)? 9452rm(oracle)? 9454rc(root)? 9462rc(root)? 9467rc(root)? 9474rm(oracle)? 9476rm(oracle)? 9478rm(oracle)? 9481rm(oracle)? 9502rm(oracle)? 9508rm(oracle)? 9526rm(oracle)? 9539rm(oracle)? 9542rm(oracle)? 9698rm(oracle)? 9725rm(oracle)? 9728rm(oracle)? 9731rm(oracle)? 9749rm(oracle)? 9760rm(oracle)? 9779rm(oracle)? 9782rm(oracle)? 9800rm(oracle)? 9878rc(root)? 9969rm(oracle) 10058rm(oracle) 10188rm(oracle) 10288rm(oracle) 10292rm(oracle) 10320rm(oracle) 10330rc(root) 10349rm(oracle) 10512rc(root) 10522rc(root) 10557rm(oracle) 10599rm(oracle) 10698rm(oracle) 10856rm(oracle) 10892rm(oracle) 10896rm(oracle) 10930rm(oracle) 10933rm(oracle) 10936rm(oracle) 10973rm(oracle) 10995rm(oracle) 11156rm(oracle) 11185rm(oracle) 11214rm(oracle) 11284rc(root) 11286rm(oracle) 11346rc(root) 11349rce(root) 11353rm(oracle) 11495rce(root) 11516rce(root) 11562rm(oracle) 11567rm(oracle) 11569rm(oracle) 11588rm(oracle) 11591rm(oracle) 11619rm(oracle) 11628rm(oracle) 11640rm(oracle) 11763rm(oracle) 11840rm(oracle) 11842rm(oracle) 11863rm(oracle) 11865rm(oracle) 11911rm(oracle) 11914rm(oracle) 11916rm(oracle) 11919rm(oracle) 11976rm(oracle) 11978rm(oracle) 11979rce(root) 12001rm(oracle) 12003rce(root) 12006rce(root) 12035rce(root) 12040rce(root) 12095rc(root) 12106rce(root) 12161rm(oracle) 12187rm(oracle) 12223rm(oracle) 12225rm(oracle) 12227rm(oracle) 12247rm(oracle) 12249rm(oracle) 12281rm(oracle) 12283rm(oracle) 12286rm(oracle) 12289rm(oracle) 12291rm(oracle) 12300rm(oracle) 12321rm(oracle) 12397rm(oracle) 12437rm(oracle) 12461rm(oracle) 12464rm(oracle) 12525rm(oracle) 12529rc(root) 12534rc(root) 12585rm(oracle) 12586rm(oracle) 12644rce(root) 12651rm(oracle) 12660rm(oracle) 12665rcm(oracle) 12788rm(oracle) 12791rm(oracle) 12828rm(oracle) 12839rce(root) 12858rm(oracle) 12884rm(oracle) 12909rm(oracle) 12937rc(root) 13048rm(oracle) 13078rm(oracle) 13101rm(oracle) 13104rm(oracle) 13123rm(oracle) 13125rm(oracle) 13160rm(oracle) 13162rm(oracle) 13174rc(root) 13320rc(root) 13326rc(root) 13358rm(oracle) 13388rm(oracle) 13413rm(oracle) 13415rm(oracle) 13418rm(oracle) 13422rce(root) 13423rce(root) 13456rce(root) 13512rm(oracle) 13527rce(colord) 13622rm(oracle) 13631rm(oracle) 13633rm(oracle) 13636rm(oracle) 13638rm(oracle) 13663rm(oracle) 13665rm(oracle) 13728rm(oracle) 13763rc(root) 13764rc(root) 13767rm(oracle) 13769rm(oracle) 13771rm(oracle) 13939rm(oracle) 13943rm(oracle) 13945rm(oracle) 13949rm(oracle) 13958rm(oracle) 13960rm(oracle) 13963rm(oracle) 13965rm(oracle) 13967rm(oracle) 13969rm(oracle) 13971rm(oracle) 13973rm(oracle) 13975rm(oracle) 13977rm(oracle) 13979rm(oracle) 13981rm(oracle) 13983rm(oracle) 13985rm(oracle) 13987rm(oracle) 13989rm(oracle) 13991rm(oracle) 13995rm(oracle) 14006rm(oracle) 14011rm(oracle) 14013rm(oracle) 14016rm(oracle) 14022rm(oracle) 14030rm(oracle) 14054rm(oracle) 14062rm(oracle) 14090rm(oracle) 14092rm(oracle) 14094rm(oracle) 14096rm(oracle) 14098rc(root) 14116rm(oracle) 14140rce(root) 14170rm(oracle) 14288rc(root) 14303rm(oracle) 14339rm(oracle) 14351rm(oracle) 14359rm(oracle) 14361rm(oracle) 14363rm(oracle) 14365rm(oracle) 14367rm(oracle) 14369rm(oracle) 14371rm(oracle) 14373rm(oracle) 14375rm(oracle) 14377rm(oracle) 14379rm(oracle) 14381rm(oracle) 14383rm(oracle) 14385rm(oracle) 14387rm(oracle) 14389rm(oracle) 14391rm(oracle) 14393rm(oracle) 14395rm(oracle) 14397rm(oracle) 14399rm(oracle) 14401rm(oracle) 14403rm(oracle) 14406rm(oracle) 14409rm(oracle) 14414rc(root) 14416rm(oracle) 14418rm(oracle) 14420rm(oracle) 14423rm(oracle) 14427rm(oracle) 14443rc(root) 14482rm(oracle) 14505rm(oracle) 14532rm(oracle) 14536rm(oracle) 14538rm(oracle) 14540rm(oracle) 14542rm(oracle) 14544rm(oracle) 14548rm(oracle) 14550rm(oracle) 14552rm(oracle) 14561rm(oracle) 14563rm(oracle) 14566rm(oracle) 14568rm(oracle) 14570rm(oracle) 14572rm(oracle) 14587rm(oracle) 14593rm(oracle) 14600rm(oracle) 14602rm(oracle) 14604rm(oracle) 14607rm(oracle) 14610rm(oracle) 14612rm(oracle) 14619rm(oracle) 14621rm(oracle) 14634rm(oracle) 14642rm(oracle) 14649rm(oracle) 14661rm(oracle) 14670rce(root) 14675rm(oracle) 14726rm(oracle) 14728rm(oracle) 14900rm(oracle) 14917rm(oracle) 14977rc(root) 14988rm(oracle) 14991rce(root) 15016rm(oracle) 15095rc(root) 15219rce(root) 15300rm(oracle) 15307rm(oracle) 15309rm(oracle) 15312rm(oracle) 15324rm(oracle) 15334rm(oracle) 15360rm(oracle) 15362rm(oracle) 15365rm(oracle) 15383rm(oracle) 15387rm(oracle) 15389rm(oracle) 15393rm(oracle) 15396rm(oracle) 15398rm(oracle) 15401rm(oracle) 15402rce(root) 15403rm(oracle) 15405rm(oracle) 15407rm(oracle) 15409rm(oracle) 15411rm(oracle) 15413rm(oracle) 15415rm(oracle) 15417rm(oracle) 15419rm(oracle) 15421rm(oracle) 15423rm(oracle) 15425rm(oracle) 15427rm(oracle) 15429rm(oracle) 15433rm(oracle) 15438rm(oracle) 15443rm(oracle) 15446rm(oracle) 15450rm(oracle) 15452rm(oracle) 15454rm(oracle) 15497rm(oracle) 15503rm(oracle) 15525rce(root) 15571rce(root) 15591rm(oracle) 15607rce(root) 15609rm(oracle) 15612rm(oracle) 15631rm(oracle) 15637rce(root) 15645rce(root) 15681rce(root) 15693rce(root) 15694rce(root) 15696rce(root) 15749rce(root) 15758rce(root) 15759rce(root) 15857rce(root) 15865rce(root) 15966rce(root) 15978rc(root) 15994rce(root) 15999rce(root) 16001rce(root) 16045rce(root) 16140rm(oracle) 16142rm(oracle) 16144rm(oracle) 16146rm(oracle) 16148rm(oracle) 16150rm(oracle) 16152rm(oracle) 16154rm(oracle) 16156rm(oracle) 16158rm(oracle) 16160rm(oracle) 16162rm(oracle) 16164rm(oracle) 16166rm(oracle) 16168rm(oracle) 16170rm(oracle) 16172rm(oracle) 16174rm(oracle) 16176rm(oracle) 16178rm(oracle) 16180rm(oracle) 16182rm(oracle) 16184rm(oracle) 16198rce(root) 16204rce(root) 16207rce(root) 16210rce(root) 16258rce(root) 16263rce(root) 16283rce(root) 16287rce(geoclue) 16293rce(root) 16295rce(root) 16297rce(root) 16310rce(root) 16317rce(root) 16322rce(root) 16327rce(root) 16335rm(oracle) 16339rce(root) 16341rm(oracle) 16347rm(oracle) 16350rm(oracle) 16352rm(oracle) 16354rm(oracle) 16363rm(oracle) 16371rce(root) 16373rce(root) 16374rce(root) 16375rce(root) 16377rce(root) 16382rce(root) 16385rce(root) 16386rce(root) 16392rce(root) 16394rce(root) 16402rce(root) 16426rce(root) 16427rce(root) 16429rce(root) 16431rce(root) 16432rce(root) 16433rce(root) 16435rce(root) 16438rce(root) 16456rce(root) 16486rce(root) 16489rce(root) 16499rce(root) 16504rce(root) 16505rce(root) 16509rce(root) 16515rce(root) 16522rce(root) 16531rce(root) 16540rce(root) 16577rce(root) 16781rce(root) 16815rm(oracle) 16855rce(root) 16875rce(root) 16882rce(root) 16896rce(root) 16898rce(root) 17079rce(root) 17115rm(oracle) 17148rm(oracle) 17156rm(oracle) 17158rm(oracle) 17160rm(oracle) 17162rm(oracle) 17164rm(oracle) 17166rm(oracle) 17168rm(oracle) 17170rm(oracle) 17172rm(oracle) 17174rm(oracle) 17176rm(oracle) 17178rm(oracle) 17180rm(oracle) 17182rm(oracle) 17184rm(oracle) 17186rm(oracle) 17189rm(oracle) 17191rm(oracle) 17193rm(oracle) 17195rm(oracle) 17197rm(oracle) 17199rm(oracle) 17201rm(oracle) 17203rm(oracle) 17205rm(oracle) 17399rm(oracle) 17461rm(oracle) 17691rc(root) 17692rc(root) 17879rm(oracle) 17990rm(oracle) 18095rm(oracle) 18220rm(oracle) 18221rm(oracle) 18226rm(oracle) 18280rm(oracle) 18352rc(root) 18404rm(oracle) 18693rm(oracle) 19145rm(oracle) 19280rm(oracle) 19645rm(oracle) 19724rm(oracle) 19726rm(oracle) 19779rm(oracle) 19934rm(oracle) 19973rm(oracle) 20141rm(oracle) 20252rc(root) 20288rc(root) 20443rm(oracle) 20521rm(oracle) 20548rm(oracle) 20577rc(root) 20580rm(oracle) 20634rm(oracle) 20826rm(oracle) 20903rc(root) 21083rc(root) 21177rm(oracle) 21464rm(oracle) 21565rc(root) 21568rc(root) 21569rc(root) 22362rm(oracle) 22619rm(oracle) 22622rm(oracle) 22624rm(oracle) 22626rm(oracle) 22628rm(oracle) 22630rm(oracle) 22634rm(oracle) 22639rm(oracle) 22641rm(oracle) 22643rm(oracle) 22647rm(oracle) 22649rm(oracle) 22651rm(oracle) 22653rm(oracle) 22658rm(oracle) 22886rc(root) 22905rm(oracle) 22983rm(oracle) 23089rm(oracle) 23238rm(oracle) 23555rm(oracle) 23790rc(root) 23791rc(root) 23795rm(oracle) 24276rm(oracle) 24482rm(oracle) 24520rc(root) 24523rm(oracle) 24568rm(oracle) 25083rm(oracle) 25122rm(oracle) 25167rm(oracle) 25200rm(oracle) 25248rm(oracle) 25835rc(root) 26073rm(oracle) 26106rm(oracle) 26356rc(root) 26870rm(oracle) 26913rm(oracle) 27010rm(oracle) 27037rm(oracle) 27152rc(root) 27164rm(oracle) 27172rc(root) 27297rm(oracle) 27777rm(oracle) 27970rc(root) 27973rc(root) 28399rc(root) 28400rc(root) 28417rm(oracle) 28500rm(oracle) 28599rm(oracle) 29262rm(oracle) 29702rc(root) 29713rm(oracle) 29766rm(oracle) 29809rm(oracle) 29829rc(root) 29830rc(root) 29831rm(oracle) 29832rc(root) 29886rc(root) 30020rm(oracle) 30446rm(oracle) 30691rm(oracle) 31345rc(root) 31577rc(root) 31604rm(oracle) 31685rm(oracle) 31749rc(root) 31941rm(oracle) 32016rc(root) 32017rc(root) 32162rm(oracle) 32169rm(oracle) 32313rm(oracle) 32452rm(oracle) 32685rc(root)
[root@db ~]#