扫一扫
分享文章到微信
扫一扫
关注官方公众号
至顶头条
Under Solaris, one of the most involved UNIX devices to understand is the disk device file. Here are several key points that may help:
In many cases, a disk device file(i.e. /dev/dsk/c0t2d0s7) refers to a particular partition (aka "slice") of a disk, and not the entire physical device. There are several device files which refer to the entire physical device, but are rarely used.
For every disk device, there are usually two device files - the block deviceand the character ("raw") device. In general:
block devicesare generally stored under /dev/dskand used for filesystem type access (e.g mount)
character devicesare generally stored under /dev/rdskused for everything else (e.g. fsck, newfs, etc..)
Discs are generally attached to a controller (or a bus) which can handle multiple devices. IDE and SCSI are both common attach methods. This tends to make disk device filenamemore complex than other types of devices.
/etc/vfstab
To see the difference between the block deviceand character devicefor a device, consider the following. The /etc/vfstabcontains entries for a single filesystem on a Solaris server: /dev/dsk/c0t2d0s7 /dev/rdsk/c0t2d0s7 /opt ufs 3 yes - The first 2 fields in the above entry, list the same disk device as both a block device("dsk") and character device("rdsk"). The block device is used by mountwhen mounting the filesystem while the character deviceis used by fsckwhen checking the filesystem and newfswhen creating the filesystem.. Both fields must be present in /etc/vfstab.
Breaking Down c0t2d0s7
This section breaks down the different components of a disk device file. In this example, I will be using the disk device file: c0t2d0s7. The four components of the disk device file are: controller, target, LUN and slice/partition and further defined in the following table:
c0 This device is attached to controller #0. On a SPARCstation this is usually the on-board SCSI or IDE controller. If this is a PC it usually refers to the first IDE controller on the motherboard.
t2 The device is target #2 - (i.e. the second device on this controller.)On a SCSI controller this is the SCSI target ID and is usually set via a switch on any external enclosure or by jumpers on the disk itself. On an IDE controller target #2 refers to the second IDE disk. With IDE this is generally determined by the device's position on the IDE cable.
d0 The device is Logical Unit / "LUN" #0 (the first) on this target. Under SCSI a single target can support up-to eight devices. This is rarely seen in practice, but some hardware raid controllers use LUNs.
s7 Slice or Partition number 7. Under Solaris, this relates to the partition number as set when using the formatcommand.
推荐投诉
濠电姷鏁告慨鐑藉极閸涘﹥鍙忛柣鎴f閺嬩線鏌涘☉姗堟敾闁告瑥绻橀弻锝夊箣濠垫劖缍楅梺閫炲苯澧柛濠傛贡缁骞掗弬鍝勪壕闁挎繂绨肩花浠嬫煕閺冩挾鐣辨い顏勫暣婵″爼宕卞Δ鈧ḿ鎴︽⒑缁嬫鍎愰柟鐟版喘瀵鈽夐姀鈥充簻闂備礁鐏濋鍛閹绢喗鈷戠紒顖涙礃閺夊綊鏌涚€n偅灏い顏勫暣婵″爼宕卞Δ鈧ḿ鎴︽⒑缁嬫鍎愰柟绋垮⒔濡叉劙骞橀幇浣告倯闂佸憡绮岄崯鎶藉触椤愨懡鏃堟偐闂堟稐绮堕梺鍝ュ櫏閸嬪鎮橀幒妤佺厽闁绘ê寮剁粚鍧楁倶韫囨梻鎳呯紒顕嗙秮閹瑩鎮滃Ο閿嬪闁荤喐绮庢晶妤冩暜閹烘挾顩插ù鐓庣摠閻撴洟鏌熼幆褜鍤熸繛鍙夋尦閺岀喖顢欓挊澶婂Б闁绘挶鍊栭妵鍕疀閹炬潙娅濋梺褰掓敱濡炶棄顫忔繝姘<婵ê宕·鈧梻浣告啞椤ㄥ棗煤閻旈鏆﹀┑鍌溓瑰敮闂侀潧锛忛崟顓炲及婵犵數濮烽弫鍛婃叏閹绢喗鏅濋柕鍫濇礌閸嬫挸顫濋悡搴$睄閻庤娲╃紞鈧紒鐘崇洴瀵噣宕掑⿰鍛潓婵犵數濮烽弫鍛婃叏閹绢喖纾圭紓浣股戝▍鐘崇箾閹存瑥鐏柣鎾存礋閹鏁愰崘銊ヮ瀳婵犵鈧尙鐭欓柡灞炬礋瀹曟儼顦叉い蹇e幘閳ь剚顔栭崰鏇犲垝濞嗘劒绻嗘慨婵嗙焾濡插綊姊洪柅鐐茶嫰婢ь垶鎮介銈囩瘈鐎殿喖顭烽幃銏ゅ礂閻撳海妾┑鐘灱濞夋盯鏁冮妷銉㈡灁濠电姵纰嶉埛鎴︽煕濠靛棗顏柣蹇涗憾閺屾盯鎮╁畷鍥р拰濡ょ姷鍋涢崯顐︺偑娴兼潙閱囨繝闈涚墕楠炴劙姊绘担鍛靛綊寮甸鍌滅煓闁规儳绠嶆禍褰掓倵閿濆骸鏋熼柣鎾跺枛楠炴牕菐椤掆偓閳ь兙鍊曞玻鍧楀箛椤撶姷顔曢梺鍛婄懃椤ャ垽顢旈崼鐔蜂患濠电娀娼ч悧蹇涙儗濞嗘挻鍋i柟顓熷笒婵¤姤绻涢崼銉х暫婵﹥妞藉畷婊堝箵閹哄秶鍑规繝鐢靛仜瀵爼鎮ч悩璇茬畺闁炽儲鏋煎Σ鍫ユ煏韫囥儳纾块柛姗€浜堕弻锝堢疀閺囩偘绮舵繝鈷€鍌滅煓闁诡垰鐬奸埀顒婄秵閸嬪棛绮绘ィ鍐╃厱妞ゆ劑鍊曢弸鎴︽煕婵犲啫濮堥柟渚垮妽缁绘繈宕熼鐐殿偧闂備胶鎳撻崲鏌ュ箠閹邦喖鍨濋柣銏㈩暯閸嬫捇鏁愭惔婵堝嚬闂佷紮绲奸崡鍐差潖缂佹ɑ濯撮悷娆忓娴犫晠姊洪崨濠冪叆妞ゆ垵顦悾鐑芥晸閻樿尙顦ㄩ梺鑲┾拡閸撴艾鈻撴ィ鍐┾拺闂傚牊绋撶粻鐐烘煕婵犲啯绀嬬€规洘锕㈤崺鈧い鎺嗗亾妞ゎ亜鍟存俊鍫曞幢濡も偓椤洭姊虹粙鍧楊€楃€规洦鍓熼幆鍐敆閸曨兘鎷婚梺绋挎湰閻熝囧礉瀹ュ鍊电紒妤佺☉閹虫劙鎯屽▎鎾寸厵閻庣數枪琚ラ梺绋款儐閹告悂锝炲┑瀣亗閹艰揪绱曢惈鍕煟鎼淬値娼愭繛鍙夊灴瀹曪繝宕橀懠顒佹闂佸憡顨堥崐锝夋偄閸忓皷鎷归梺褰掑亰閸犳艾鈻旈崸妤佲拻闁稿本鐟х粣鏃€绻涙担鍐叉处閸嬪鏌涢埄鍐槈缂佺姷濞€楠炴牕菐椤掆偓閻忣亪鏌涘▎蹇曠闁靛洤瀚伴獮鎺楀幢濡炴儳顥氶梻鍌欑閻ゅ洭锝炴径鎰瀭闁秆勵殔閺勩儵鏌曟径鍡樻珔妤犵偑鍨烘穱濠囨倷閹绘巻鎸冮梺鍛婂灱椤鎹㈠┑瀣仺闂傚牊鍒€閻愮儤鐓曢柕濠忛檮閵囨繈鏌℃担鍓插剶闁哄睙鍥ㄥ殥闁靛牆鎳嶅▽顏呯箾閿濆懏鎼愰柨鏇ㄤ簼娣囧﹪宕奸弴鐐茬獩濡炪倖鏌ㄩ崥瀣敂閿熺姵鈷掑ù锝呮嚈瑜版帩鏁勯柛娑欐綑绾惧綊鏌涢敂璇插箺鐎规洖寮剁换娑㈠箣濞嗗繒浠煎Δ鐘靛亼閸ㄧ儤绌辨繝鍥舵晬婵犲灚鍔曞▓顓犵磼閻愵剚绶茬紒澶婄秺瀵鏁愰崱妯哄妳闂侀潧楠忕徊浠嬎夊┑鍡╂富闁靛牆绻愰々顒勬煛娴g瓔鍤欐い鏇悼閹风姴顔忛鍏煎€梻浣稿閸嬫帡宕戦崨鎼晛闁搞儺鍓氶埛鎺懨归敐鍛暈闁哥喓鍋ら弻鐔煎箹娴h櫣鏆悗瑙勬礈婢ф骞嗛弮鍫氣偓锕傚箣閻愬瓨鐝ㄩ梻鍌欑劍鐎笛呮崲閸岀倛鍥ㄧ鐎n亝鐎梺绯曞墲閵囨粓鍩€椤掍礁绗掓い顐g箞椤㈡绻濋崒姘兼浆闂傚倷鐒﹀鍧楀储娴犲鈧啴宕卞▎鎰簥濠电偞鍨崹鍦不婵犳碍鐓涘璺侯儏閻忊晠鏌涢弬鎯у祮婵﹨娅g划娆忊枎閹冨闂備礁婀遍幊鎾趁洪鐑嗗殨濠电姵纰嶉弲鏌ユ煕濞戝彉绨兼い顐㈢Т閳规垿鎮欓崣澶樻!闂佸憡姊瑰ú婊勭珶閺囥垹绠柤鎭掑劗閹锋椽姊洪崨濠勭畵閻庢凹鍘奸敃銏ゅ箥椤斿墽锛滈柣搴秵閸嬪嫰鎮橀幘顔界厱闁冲搫鍟禒杈殽閻愬樊鍎旈柡浣稿暣閸┾偓妞ゆ巻鍋撴い鏂跨箰閳规垿宕堕妷銈囩泿闂備礁鎼ú銊╁磻閻愬搫闂繛宸簼閻撳啴鎮归崶顏嶅殝闁告梻鍠撶槐鎺撴綇閵婏箑纾抽悗瑙勬礃鐢帡鍩㈡惔銊ョ婵犻潧妫悗鏉戔攽閿涘嫬浜奸柛濠冨灴瀹曟繂鐣濋崟顐ょ枃濠殿喗銇涢崑鎾搭殽閻愬弶顥滈柣锝嗙箞瀹曠喖顢曢妶蹇曞簥闂傚倷鑳剁划顖炲礉濞嗗繄缂氱憸蹇曞垝婵犲洦鏅濋柛灞剧〒閸樼敻姊虹粙璺ㄧ闁稿鍔欏鍐差潨閳ь剟寮诲☉銏犳閻犳亽鍔庨崝顖炴⒑鐠団€虫灓闁稿鍊曢悾鐤亹閹烘繃鏅濋梺缁樓规禍顒勬儎鎼淬劍鈷掑ù锝呮啞鐠愶繝鏌涙惔娑樷偓婵嗙暦瑜版帗鍋ㄩ柛鎾冲级閺呮粓姊洪崘鍙夋儓闁瑰啿绻樺畷鎰板垂椤愶絽寮垮┑顔筋殔濡鏅剁紒妯圭箚闁圭粯甯炵粔娲煛鐏炵偓绀嬬€规洘鍎奸ˇ鍙夈亜韫囷絽骞橀柍褜鍓氶鏍窗閺囩姴鍨濇繛鍡樺姃缁诲棙鎱ㄥ┑鍡欑劸婵℃彃銈稿娲閳哄啰銈烽梺绋块绾绢厼危閹版澘绠婚悗娑櫭鎾剁磽娴e湱鈽夋い鎴濇噹閳绘捇顢橀悙鈺傛杸闂佸疇妫勫Λ妤佺濠靛牏纾奸悹鍥皺婢ф洘銇勯弴顏嗙ɑ缂佺粯绻傞~婵嬵敇閻愭壆鐩庣紓鍌欒兌閸嬫挻鍒婇懞銉d粓闁归棿绀侀悿楣冩煥濠靛棭妲归柛瀣у墲缁绘繃绻濋崒姘闁轰礁鐗撳铏规嫚閳ヨ櫕鐏嶉梺鎸庢磸閸ㄤ粙鐛繝鍥ㄥ亹婵炶尙绮弲銏ゆ⒑缁嬫寧婀扮紒顕嗙悼濡叉劙寮婚妷锔规嫼闂佸憡绻傜€氬嘲危閹间焦鐓熸俊銈傚亾閻庢碍婢橀悾宄扳攽閸ャ劌鍔呴梺鎸庣箓濞诧絿绮径鎰拺缂備焦锚婵鏌涙惔娑樷偓婵嬪箖閳ユ枼妲堥柕蹇娾偓鏂ュ亾閸洘鐓熼柟閭﹀灡绾墽鎮鑸碘拺闁告縿鍎辨牎闂佹寧娲忛崹钘夘嚕婵犳艾鐒洪柛鎰ㄦ櫅椤庢捇姊洪懡銈呮瀾婵犮垺锕㈤敐鐐哄箳濡や礁鈧敻鎮峰▎蹇擃仾缂佲偓閸儲鐓曢柣妯虹-婢х敻鏌曢崱鏇狀槮妞ゎ偅绮撻崺鈧い鎺戝缁犳牠鏌嶉崫鍕櫤闁诡垳鍋為妵鍕箛閳轰讲鍋撳┑瀣濠电姵纰嶉埛鎺楁煕鐏炴崘澹橀柍褜鍓欓崲鏌ユ箒闂佹悶鍎滈崨顔筋啎闂備礁澹婇悡鍫ュ磻閸涙潙鐭楅煫鍥ㄧ⊕閻撴瑩鏌熼娑欑凡鐞氭岸姊洪幎鑺ユ暠婵﹤顭烽崺鈧い鎺嗗亾缂佺姴绉瑰畷鏇㈡焼瀹撱儱娲、娑㈡倷閹绘帞鈧參姊虹粙璺ㄧ伇闁稿鍋ら幃锟犲閳ヨ尙绠氬銈嗙墬缁矂鎯冮幋鐘电<閺夊牄鍔岄崫娲煛鐏炶濡奸柍瑙勫灴瀹曢亶鍩¢崒鍌﹀缁辨挻鎷呴幓鎺嶅闂佽鍑界紞鍡涘磻娴e湱顩叉繝濠傜墛閻撴稓鈧箍鍎遍崯顐d繆閸ф鐓冮柦妯侯樈濡插湱绱掔紒妯兼创鐎规洖銈搁幃銏ゆ惞閸︻厼甯ㄥ┑鐘愁問閸犳牠鏁冮妸銉㈡瀺闁挎繂鎳夊Σ鍫ユ煟閵忊懚鐟邦啅濠靛洢浜滈柡鍌涘劤鐎氬酣鏌嶈閸撴岸宕濋弴鈶┾偓鏃堝礃椤斿槈褔骞栫划鍏夊亾閼碱剙鍤┑鐘垫暩閸嬬姷浜稿▎鎾崇獥闁哄诞鍛濠电偛妯婃禍婊堟倿閸偁浜滈柟鍝勭Ч濡惧嘲霉濠婂嫮鐭掗柡宀€鍠栧畷顐﹀礋椤掑顥e┑鐐茬摠缁挾绮婚弽褜娼栨繛宸簻缁犱即骞栧ǎ顒€鐏柍瑙勭⊕缁绘繄鍠婂Ο宄颁壕闁惧浚鍋呴幃娆撴煕濡ゅ懍鎲鹃柡宀€鍠栭幃褔宕奸悢鍝勫殥缂傚倷绶¢崑鍕矓瑜版帒钃熸繛鎴欏焺閺佸啴鏌ㄥ┑鍡樺窛闁伙絿鍘ч—鍐Χ閸℃ê闉嶅┑锛勫仩濡嫰锝炶箛娑欐優闁革富鍘鹃敍婊冣攽閳藉棗鐏犻柟纰卞亰閿濈偛鐣濋崟顒€鈧灚绻涢崼婵堜虎婵炲懏锕㈤弻娑㈠箻鐎靛憡鍣梺璇茬箰閸熸潙顫忓ú顏勫窛濠电姳鑳剁换渚€姊洪崫銉バg€光偓缁嬭法鏆﹂柕蹇嬪€曠粻鐟懊归敐鍛辅闁归攱妞藉娲川婵犲啫闉嶉悷婊勬緲閸燁垳绮嬪鍡欘浄閻庯綆鍋嗛崢閬嶆煟鎼搭垳绉靛ù婊勭矒椤㈡棃顢橀姀锛勫幍濡炪倖姊归弸濠氭嚀閸ф鐓涘ù锝嚽归弳锝団偓瑙勬礃鐢帡鍩ユ径濠庢僵妞ゆ巻鍋撶紒鐘靛仱濮婄粯鎷呯粵瀣闂佸憡鍨归弲顐ゆ閻愬搫骞㈡繛鎴炨缚閿涙盯姊虹化鏇炲⒉閽冭鲸绻涢崨顖毿i柕鍥у楠炴帡骞嬪┑鍐ㄤ壕闁煎鍊曢ˉ姘攽閸屾碍鍟為柣鎾存礋閹﹢鎮欓幓鎺嗘寖闂佸疇妫勯ˇ杈╂閹烘埈娓婚柨鏇楀亾婵炶绠撻幃鈥斥枎閹惧鍘介梺缁樻煥閹诧紕娆㈤崣澶堜簻闊浄绲藉顕€鏌″畝鈧崰鏍箖閳╁啯鍎熼柕蹇ョ悼椤㈠懘姊绘担鐑樺殌鐎殿喖鐖奸獮鎰板礃閼碱剚娈鹃梺缁樻煥閸氬藟閸喓绠鹃柟瀵稿仧閹冲嫰鏌e┑鎾剁瘈婵﹤顭峰畷鎺戭潩椤戣棄浜鹃柟闂寸绾剧懓顪冪€n亝鎹i柣顓炴閵嗘帒顫濋敐鍛婵°倗濮烽崑鐐烘偋閻樻眹鈧線寮撮姀鐘栄囨煕鐏炲墽鐓瑙勬礀閳规垿顢欓惌顐簻閻g兘顢楅崟顐㈠亶闁诲海鏁哥涵鍫曞磻閹捐埖鍠嗛柛鏇ㄥ墰椤︺儳绱撻崒姘毙㈤柨鏇ㄤ簻椤曪絾绻濆顒€鑰垮┑掳鍊曢敃銈夊箖閹达附鈷戦柛娑橈梗缁堕亶鏌涢妸褎娅曟俊鍙夊姍閺屽棗顓奸崱娆忓箺闂佺澹堥幓顏嗘閺囥垺鍋╂い鎾卞灪閻撴洟骞栧ǎ顒€濡洪柟鏌ョ畺閹稿﹤鈹戦崰銏犵秺瀹曟宕楅懖鈺冣枏缂備胶鍋撳畷妯衡枖閺囥垹鐒垫い鎺嗗亾缂佺姴绉瑰畷鏇㈡焼瀹撱儱娲︾€佃偐鈧稒锚娴滄姊洪崫鍕偍闁搞劍妞介幃鈥斥槈閵忥紕鍘遍梺闈涱檧缁蹭粙宕濆顑芥斀闁挎稑瀚敮鑸点亜椤撯€冲姷妞ぱ傜窔閺屾盯濡搁妶鍛ギ濠电姭鍋撳〒姘e亾婵﹨娅g槐鎺懳熼幘铏础缂侇喗妫冮、姘跺焵椤掑嫨鈧線寮崼婵嬪敹闂佺粯妫佸▍锝夊汲閵忋倖鈷掗柛灞捐壘閳ь剛鍏橀幃鐐烘晜闁款垰浜剧紒妤佺☉閹冲繐鐣烽弻銉︾厱閻忕偟铏庨崵銈嗙箾閹寸儐鐒搁柡鍐ㄧ墕瀹告繃銇勯幘璺盒㈡鐐村浮濮婄粯鎷呴崨濠冨創濠电偛鐪伴崹钘夌暦閻熸噴娲敂閸涱厺绨甸梻浣告啞閸旓附绂嶅┑瀣獥闁归偊鍘剧弧鈧繝鐢靛Т閸婄粯鏅堕弴鐘电<闁逞屽墴瀹曞ジ鎮㈢粙鍨紟婵犵妲呴崹杈┾偓绗涘懏鍏滃Δ锝呭暞閻撱垽鏌涢幇鍏哥盎闁哄鐩弻锛勪沪閻愵剛顦ㄧ紓浣虹帛缁嬫牠藝閺屻儲鍊垫慨妯哄船閸樺鈧娲橀崹鎸庝繆閹间礁鐓涢柛灞绢殕鐎氳偐绱撻崒姘偓鐑芥倿閿曞倹鏅┑鐘愁問閸犳牕煤閿曞倸桅闁告洦鍨伴崡鎶芥煏婵炲灝鍔氱紒顐㈢Ч濮婅櫣鍖栭弴鐔告緭闂佹悶鍔忓Λ鍕敋閿濆绠绘い鏃傗拡濞煎﹪姊洪悙钘夊姕闁哄銈稿畷鎴﹀箻缂佹ê浠洪梺鍛婄☉閿曪箓宕i崱妞绘斀闁绘ḿ绮☉褎淇婇锝庢疁闁糕斁鍋撳銈嗗笒閸婂綊宕甸埀顒勬⒑鐎圭媭鍤欑紒澶屾嚀閻g兘宕奸弴鐐嶁晠鏌ㄥ┑鍡楊伀闁烩晛閰e缁樼節鎼粹€茬盎濠电偠顕滄俊鍥╁垝濞嗘挸绠涢柡澶庢硶閻ゅ懏淇婇妶蹇曞埌闁哥噥鍨堕幃鈥斥槈閵忊€斥偓鍫曟煟閹扮増娑уù婊冨⒔缁辨帡鍩€椤掑倵鍋撻敐搴″幋闁稿鎸鹃幉鎾礋椤掑偆妲瑰┑鐐茬摠缁矂鎮ユ總绋课ュù锝呭濞笺劑鏌嶈閸撶喖鐛崘顔碱潊闁挎稑瀚板顔界節閵忥絾纭炬い锕侀哺瀵板嫰鏁撻敓锟�
现场直击|2021世界人工智能大会
直击5G创新地带,就在2021MWC上海
5G已至 转型当时——服务提供商如何把握转型的绝佳时机
寻找自己的Flag
华为开发者大会2020(Cloud)- 科技行者