  Linux: dump and restore mini-HOWTO
  FUKUSHIMA Osamu, (C), <fuku@amorph.net>
  2.0, 16 Aug. 2000

  ̕ BSD R̃c[ dump(8)  restore(8) ̗p@ƃe[
  vhCũIy[VɊւ邱Ƃ̂łBobNAbv
  ƑSʂɊւ钍ӓ_ɂGĂ܂B
  ______________________________________________________________________

  ڎ

  1. dump/restore: Overview
     1.1 ̃A[JC\tgƂ̔r
     1.2 ̃obNAbv\tgƂ̔r

  2. fBAɊւ邱
  3. Linux ł̗p
     3.1 dump/restore v0.3
     3.2 dump/restore v0.4 Beta
     3.3 foCXt@C

  4. mt R}h
     4.1 mt
     4.2 mt ̑
     4.3 MTX ̑(W^e[vhCȗ)

  5. dump gobNAbv
     5.1 obNAbvt@CVXȇI
        5.1.1 obNAbvȂt@CO
     5.2 tobNAbv
        5.2.1 t@CVXeÎ~
        5.2.2 hCȕ
        5.2.3 dump 
     5.3 _vxƃCN^obNAbv
     5.4 dump ̋L^
     5.5 rdump
     5.6 e[v̕ۊ
     5.7 XPW[O

  6. restore
     6.1 XgA̍ۂ̒
     6.2 tXgA̎菇

  7. obNAbv͖{ɕKv?
  A. ̕ɂ
     A.1 Copyright notice
     A.2 ӔC̕
     A.3 ӎ
     A.4 tB[hobN
     A.5 

  ______________________________________________________________________

  1.  dump/restore: Overview

  dump(8)  restore(8) ́A BSD n UNIX œ`IɎgĂAt@C
  VXẽobNAbvEXgÂ߂̃vOłB

  dump ̓t@CVXeobNAbvA restore ̓obNAbvꂽ
  A[JC()t@C𕜌܂BA[JC͕ʂ̃t@C
  āAʏ̃t@CVXeɍ쐬邱Ƃł܂AʓIɂ̓ob
  NAbvp̊OfoCX (e[vfoCXȂ) ɕۑ邱Ƃ
  Adump R}hɂ͂̂߂̗ւpӂĂ܂B

  1.1.  ̃A[JC\tgƂ̔r

  A[JC쐬\tgEFAƂẮA cpio, tar, afio Ƃ
  ̂܂B̃\tgEFA̓t@CPʂŃA[JC̃^[
  QbgF܂Bē̃t@CfBNgA[JC
  Ώۂ珜OÃt@CVXeɂ܂ĒP̃A[J
  C쐬邱Ƃł܂B

   dump ͕Iȃt@CVXePʂŃ^[QbgF܂B
  āAX̃t@C i-node ̒Pʂŏ܂B̃t@CA[
  JC̑Ώۂ珜O悤ȋ@\͗pӂĂ܂B(Ɋւ
  ́Aʂ̕@œ悤Ȍʂ𓾂邱Ƃł܂Bڂ͌q
  ``obNAbvȂt@CO'' QƂĂB)

  ̂Adump ̓CN^A[JC(ÕA[JC_
  XVꂽt@CIяoăA[JC)̋@\ɊւẮA
  ւ񂷂ꂽ@\񋟂Ă܂B܂ACN^A[JC
  v鎞ԂA̕@ɂׂĔɍłB

  restore  dump gĂA[JCt@CɁA dump Ƃ
  s̏ԂɃt@CVXe𕜌悤Ƃ܂B

  ႦΑÕA[JCɑ݂ foo Ƃt@CǍsv
  Ȃč폜ꂽƂ܂B̃CN^A[JC̎_ł foo
  ݂͑Ȃ̂ŁAdump ́ufoo Ƃt@CǁA͍폜
  Ă܂vƂCN^̃A[JCt@CɎc
  B

  tar găCN^obNAbv𑱂ĂāASĂt
  XgAĂ݂A͂邩̂ɏ͂̃t@CςŁAt@C
  VXeĂ܂AƂԂɂ͌ĂȂ܂B

  ȏ̂Ƃ܂Ƃ߂ƁA

  o  ̃fBNgt@CA[JCɂ́A cpio, tar, afio
     ȂǂĂ

  o  t@CVXẽA[JCɂ́Adump Ă

     Ƃ܂BړIɉāÃc[gƂ悢ł
     B̕ dump/restore Ɋւ镨Ȃ̂ŁAȉɋLqĂ
     ̂́At@CVXẽobNAbvɊւ邱ƂłƍlĂ
     B

  1.2.  ̃obNAbv\tgƂ̔r

  dump  tar ƓlɃt@CA[JC@\܂Aꎩ
  obNAbv\tgł܂BƂŁALinux ̃oCifBXg
  r[Vɂ̓obNAbvp̃[eBeB[tĂ邱Ƃ
  ܂B܂܂Ȏނ̃[eBeB[܂AÕA[JC
  c[̃tgGhƂē삷̂悤łBׂĂ
  ɎgĂ݂킯ł͂܂񂪁Aj[`ŃZbgAbvł
  ̂AȂȂ֗Ɏv܂B

  ܂ŁAx[eBeB[gĂ݂悤ƍl܂
  AǎgȂ܂܍ɂĂ܂BЂƂɂ́Ał
  dump/restore ɊĂ܂Ă̂ŁAV\tgEFA̎gp@
  ôʓ|ɊAƂƂ܂BAǂ̂Ƃ
  ́uPȂ̂̕MłvƂ_ɂ悤łBdump ŕ
  obNAbvKvɂȂ󋵂́Aً͋}ԂƂ܂BVXe
  ̂̂NȂ󋵂z肵ĂȂ΂Ȃ܂Bl
  ƁA܂肫ƐłȂĂ삷邱Ƃ҂łc[
  ̕ƓsƎv̂łB

   initrd 𗘗pً}Np̃tbs[fBXNꖇėp
  Ă܂BfBXNۂɍĂ݂Ƃ킩̂łAƂ
  initrd 𗘗pĂeʂ͎ɌĂ܂B̍fBXNɂ́A
  ͂ɂ鐔̃}VJo[AWFlbNȃJ[lƁA
  ̃foCXhCõW[A fdisk, fsck, ed, tar 
  ǂ̊{IȏĈ߂̃c[ƂƂ mt  restore Ă܂B
  ܂ۂɖɗƂ͂܂񂪁ÃfBXNNVXe
  Ń[J邢̓[gڑ̃e[vhCu쓮ł邱ƂmF
  Ă܂BāÃtbs[fBXNƂ͂܂y
  ̂Ƃ͌܂łBÃtbs[ꖇŁAKvƂ
  ΃t@CVXe̍č\zł邱ƂmFłƂA傫ȈS
  ܂B

  dump/restore ȊÕobNAbv@ے肷̂ł͂܂񂪁A
  lIɂ̓t@CVXe̕ɂ܂肨ȃc[KvƂ
  @͂߂܂BobNAbvc[IƂɂ́ÂƂ
  ̕ЋɂƂ߂ĂĂB

  2.  fBAɊւ邱

  ŋ߂͑eʂ̃n[hfBXNhCuւɓł̂ŁA
  obNAbvp̃fBAƂĂI邱Ƃ́Aقǔ񌻎I
  ȂƂł͂܂Bn[hEFAƂẴeiXyłAA[
  JCڂɌ`ŕۊǂł̂bgƂł傤B

  AobNAbv̑ΏۂƂȂfBXN̗eʂrIȂ΁Aob
  NAbvfBAƂăn[hfBXNhCugp邱Ƃ߂
  ܂B邢́AɃe[vhCuȂǂ̐pfoCXw邱
  ߂ꍇɁAƂ肠n[hfBXNhCuŊԂɍ킹
  ̂悢ł傤BŐpfoCX肵ƂłAfBXN͖
  ʂɂ邱ƂȂAʏ̃t@CVXeƂĎg邱Ƃł邩
  łB

  obNAbv̑ΏۂƂȂfBXN̗eʂ傫ȂAobNAbvp
  foCX̍w͌ɒl܂Be[v͓R[ouȂ̂ŁARX
  gŉߋ̃obNAbvɂĂ̗ۑ邱Ƃł悤ɂȂ
  B

  dump ł̃obNAbvɂ́AʓIɂ̓e[vJ[gbWgĂ
  BPC ł́AQIC(1/4 inch cartridge), 4mm DAT, 8mm EXABYTE, DLT
  (Digital Linear Tape) Ȃǂ悭gĂ܂B

  킽 EXABYTE  EXB-8505 ƂÂ SCSI1 ̃e[vhCug
  ܂B EXABYTE  8mm rfIe[vɎp̃J[gbWe[vg
  p܂BhCu⃁fBẢî_ŁAlgpɂ
  ܂ĂƂ͂܂BAeʂ̃obNAbvfBA
  ĒgĂAMƂ܂B

  8mm EXABYTE ̋@\^悤Ȃ̂ 4mm DDS hCułBr
  I (Vi 3 ~قǔĂ邱Ƃ܂)łeʂ傫
  ̂ŐlC܂B舵yŋ쓮ÂłBwbh̎Z
  Ƃl܂B

  ڈƂẮAғĂt@CVXêƂTCY̑傫
  ̈悪Aɗ]TĎ܂邭炢̗eʂ̂郁fBAIԂ
  łB

  e[vhCuSʂɊււ̃|C^Ƃ:

       http://www.paranoia.com/~vax/unix_tape.html
       ``The Source of All Knowledge (p)''

  ƁA炽ǂ郊NĂ܂B

  ̕ł́A8mm e[vhCu EXB-8200 ɂāAe[vɃobN
  AbvEA[JC쐬邱ƂĂ܂B

  3.  Linux ł̗p

  3.1.  dump/restore v0.3

  Linux ł Remy Card  (card@linux.eu.org)  4.4BSD ̕x[XɈ
  AgĂ܂BRed Hat  Debian ɂ́Adump-0.3 ̃oCi
  pbP[WtĂ܂B\[XpbP[W:

       ftp://tsx-11.mit.edu/pub/linux/pack-
       ages/ext2fs/dump-0.3.tar.gz

  ł܂B LSM t@Cɂ 2.0.x ȍ~̃J[lɂĂ̋Lq
  ܂񂪁A̐VJ[l𑖂点ĂVXeł
  pł͂łB dump vO ext2 t@CVXe̍\
  ˑĂ̂ŁA make 邽߂ɂ Ext2fs library KvłB
  ̃CuL̃fBNg\łB

  dump  ext2 t@CVXe̍\ɈˑĂ邱Ƃ́A̐
  炵Ă܂B

  ܂ Peter Moulder  (reiter@netspace.net.au) JĂ ext2
  t@CVXeւ̊g@\ (e2compr) gĈkꂽt@ĆA
   restore łȂƂ킩Ă܂ (mɂ΁Ak
  邩ǂۑĂNX^[rbgȂ߂ɁAk
  ꂽf[^ւ̓ߓIȃANZXłȂȂ܂)B

  āAł e2compr 𗘗pꍇ dump ȊÕobNAbv
  iI΂Ȃ΂Ȃ܂B

  ЂƂ̐́Adump o[W 0.3 ̓}`{[̃obNAb
  vɂ̓T|[gĂȂƂłBăobNAbvfBA
  ̃TCYt@CVXẽTCYꍇɂ́AɃXgA
  łȂ\܂B

  3.2.  dump/restore v0.4 Beta

  1996 N 1 ɂ́A4.4BSD-Lite2  dump x[XɈڐAAV
  dump-0.4 ̃o[WeXgJĂ܂B̃V[Y 0.4b4
  ܂ Remy Card  ɂč쐬EzzĂ܂Ǎ㐔NԂ
  năeiX~ԂɂȂĂ܂B

  1999 N 9  Stelian Pop  (pop@cybercable.fr) ɂĊJp
  邱ƂɂȂAݐJɌăo[WoĂ܂B̃
  o[W:

       http://dump.sourceforge.net/

  œ肷邱Ƃł܂B̃o[Wł́A}`{[̃obN
  AbvT|[gĂ܂B̑ɂ dump/restore  0.4b ́A0.3
  ƔrƐ Bugfix ƐV@\̒ǉsĂ܂BȂ
  ̂:

  o  FreeBSD-3.1-RELEASE ōsꂽ Bugfix Ƌ@\ǉ̗A

  o  Red Hat, Debian, SuSE 쐬pb`̎荞

  o  }`{[̃A[JC̎舵Ɋւ Bugfix 

  o  [gobNAbv rsh ȊO remote shell g悤ɂȂ
     

  o  ext3 t@CVXeւ̑Ή

  o  kerberos T|[g

  o  buffer overflow ̉

  o  dump Iɓ command sł悤ɂȂ (-F)

  o  restore t@C̃XgOǂݍ߂悤ɂȂ (-X)

  o  restore ̑Θb[hł GNU readline T|[g

     Ȃǂł (2000/07/05 )B

  ȂAdump-0.4 ̃o[ŴA 0.4b14 ȑÕo[Wɂ̓Z
  LeBz[Ă܂BK 0.4b16 ȍ~CXg[
  B

  3.3.  foCXt@C

  Linux ł́Ae[vhCug߂̃foCXhCoWŒ񋟂
  Ă܂Bg̃hCuɂhCoJ[l̃RpCɑg
  ݍłB[_uW[̌`ł܂܂B

  ɁAe[vhCũfoCXt@CmF܂B

       % ls -l /dev/*st[0-9]
       crw-rw-rw-   1 root     disk       9, 128 Oct  5  1995 /dev/nst0
       crw-rw----   1 root     disk       9, 129 Oct  5  1995 /dev/nst1
       crw-rw-rw-   1 root     disk       9,   0 Oct  5  1995 /dev/st0
       crw-rw----   1 root     disk       9,   1 Oct  5  1995 /dev/st1

  /dev/nst?  /dev/st? ̓ނ܂B (Ȃ΁AMAKEDEV R}
  hō쐬ĂB) ̂Ast? ̓R}hhCuɑ΂Ĕ
  sꂽƂɁAIɐ擪܂Ŋ߂(rewind)foCXł
  Anst? ͊߂Ȃ(no rewind)foCXłB̂ɂ͍D݂
  ̂łA no rewind ̕DłB /dev/nst0 ^[
  Qbg̃foCXƂėp邱Ƃɂ܂B^[Qbg̃foCX
  ܂ÃfoCXt@C ``/dev/tape'' ƂV{bN
  N쐬ĂBĂƁAmt Ȃǂ̃R}hŃfoCX
  ȗł܂B

       % cd /dev; ln -s nst0 tape

  ڑĂe[vhCuobNAbvp̃foCXƍl
  Aʃ[ŨANZXׂ͂ċ₵ق悢ł傤B̏
  ́A`Others' ̃[h/Cg𗎂ƂĂBL̗ł́A
  ڂ̃e[vhCu͈ʃ[ŨANZXAڂ̃e[vhCu
  obNAbvpŁAL҂ƃO[v `disk' ɑĂ郆[UȊO̓A
  NZXsɂȂĂ܂B

  4.  mt R}h

  4.1.  mt

  `mt' ́Ae[vhCu𑀍삷邽߂̃R}hłBe[v̊
  EEoAhCủғ󋵂̊mFȂǂł
  Bdump/restore e[vhCuŎgɂ́Amt ł͔̑Ēʂ邱
  Ƃł܂Bł΁AKp̒Ze[vpӂāA܂ł
  Ǝ̂ł傤B `mt' ɂ̓hCuɈˑ@\
  BKx}jAɖڂʂāAȂg̃hCuł͂ǂ̃R
  }hĝc悤ɂĂB

  Linux Ŏg mt ƂẮABSD ̂̂x[X Kai Makisara 
  (Kai.Makisara@metla.fi) ڐA mt-st ʓIłB\[XpbP[
  W:

       ftp://tsx-11.mit.edu/pub/linux/sources/sbin/mt-st-0.4.tar.gz

  ł܂B

   Archive Python 28849 SCSI hCû悤 DDS Autoloader 𗘗p
  ꍇ Leonard N. Zubkoff  (lnz@dandelion.com) 쐬Ezz
   MTX ɗł傤B:

       http://www.dandelion.com/Linux/

  ł܂B MTX ̎gɊւĂ ``̃ZNV̍Ō''ŉ
  ܂B

  4.2.  mt ̑

  ̏͂ł́Aۂ mt ̑ʂāAmt ̋@\ɂĉĂ
  ܂B

  hCuɃe[v(ł΁AKp̂)𑕓UĂBU
  A mt R}hŃhCũXe[^XmFĂ݂܂傤Bmt 
  IvVR}h `status' ́AhCũXe[^XmFR}h
  łB

       % mt status
       SCSI 1 tape drive:
       File number=0, block number=0.
       Tape block size 1024 bytes. Density code 0x0 (default).
       Soft error count since last status=0
       General status bits on (41010000):
        BOT ONLINE IM_REP_EN

  ܂AbZ[W̍ŏIsĂBhCuɃe[vUA
  Is BOT (Beginning Of Tape Marker) \ɂẴwbḧʒu̓e[
  v̐擪ɂ邱Ƃ킩܂B ONLINE ́Ae[vhCuIy
  [^ɂđ\ȏԂł邱ƂӖĂ܂Be[vǂݏ
  ɂ ONLINE ̏ԂłKv܂B݂̃t@Cԍ 0 
  ȂĂ܂Bt@Cԍ̓e[v̐擪 0 Ŏn܂At@CI[
  }[N(EOF)邲ƂɁA܂B

  (Ȍ̐AvCeLXgłł͂̐}gĂ܂B\
  łΓ̃tHgŉ{Ă)

         V (<--- Tape Head)
        /==================================================================/
       | B<--- BOT Mark)                                   ->   Tape End  /
        \================================================================/
                                  V: Tape Head  B: BOT Mark  E: EOF Mark

  ʏADensity  Tape block size  Drive ɂ킹čœKȂ̂I
  ɃZbg͂łBA OS ƃe[vƂ肷\肪
  ꍇ́A OS ԂŌ݊̂`IKvł傤B
  Af[^n[hEFAňkăfBAɋL^hCȕꍇA
  mt ̃R}hŖI compression tO^ĂKv܂B
  ̂̓hCu̎ނɂĈقȂ邱Ƃ̂ŁA͏
  ܂B킵 mt(1) }jAy[W defsetblk, setblk,
  defcompression, datcompression, compresson Ȃǂ̍ڂƁAg̃h
  Cũ}jAQƂĂB

  Amt status ̌ʁÂ悤ȃbZ[Woꍇ́A /dev/tape
  ̃NwĂfoCXt@ChCûȂĂ̂ƈ
  ȂĂ\܂B

           /dev/nst0: No such device or address

  ̏ꍇ́Aʂ̃foCXt@C -f R}hŎw肵ĎĂ݂Ă
  BȃbZCW\ꂽȂAN͂蒼ĂĂ
  B

  ł́AۂɊ̃t@Ce[vɏāAKĂ݂邱Ƃɂ
  傤BǂKȏꏊɗKp̃fBNg쐬A̒
  file-01  file-06 ܂ł̃_~[t@C touch R}hō쐬
  B

       (tcsh)% foreach num (01 02 03 04 05 06)
       foreach? touch file-$num
       foreach? end
       (tcsh)% ls -l
       -rw-r--r--   1 fuku     users           0 Nov 21 01:10 file-01
       -rw-r--r--   1 fuku     users           0 Nov 21 01:10 file-02
       -rw-r--r--   1 fuku     users           0 Nov 21 01:10 file-03
       -rw-r--r--   1 fuku     users           0 Nov 21 01:10 file-04
       -rw-r--r--   1 fuku     users           0 Nov 21 01:10 file-05
       -rw-r--r--   1 fuku     users           0 Nov 21 01:10 file-06

  ̃t@CÂAtar Ńe[vɏł݂܂B

       % tar cf /dev/tape file-01

  G[ȂɂȂ΁A܂Ă܂BÔ߂ mt ̃Xe[^X
  mFĂ݂܂傤B

       % mt status
       SCSI 1 tape drive:
       File number=1, block number=0.
       Tape block size 1024 bytes. Density code 0x0 (default).
       Soft error count since last status=0
       General status bits on (81010000):
        EOF ONLINE IM_REP_EN

  vłˁBEOF ЂƂǉꂽ̂ŁAt@CԍCN
  gāA1 ɂȂĂ܂B /dev/tape  /dev/nst0 ܂ no rewind
  ̃foCXɏ񂾂̂ŁAe[vwbh͍t@C̏I[ (EOF)
  ɂ܂BłɎ̃t@CĂƂƂłB

                   V
        /==================================================================/
       | B[file-01]E                                                      /
        \================================================================/
                                    V: Tape Head  B: BOT Mark  E: EOF Mark

  ł́Ac̃t@C͘AďĂ܂܂傤B

       (tcsh)% foreach num (02 03 04 05 06)
       foreach? tar cf /dev/tape file-$num
       foreach? end

  Xe[^XmF܂B

       % mt status
       SCSI 1 tape drive:
       File number=6, block number=0.
       Tape block size 1024 bytes. Density code 0x0 (default).
       Soft error count since last status=0
       General status bits on (81010000):
        EOF ONLINE IM_REP_EN

  t@C͂Ə܂Ă܂Be[vwbh͍t@C
  I[ɂ܂B̗lq}ɂĂ݂܂傤B

                                                                     V
        /==================================================================/
       | B[file-01]E[file-02]E[file-03]E[file-04]E[file-05]E[file-06]E    /
        \================================================================/
                                  V: Tape Head  B: BOT Mark  E: EOF Mark

  ő؂ȂƂ́Aet@Cɂ t@C̒gEt@C̏I[}[
  N̂ӂƂƂłB́At@CɃe[vɊi[
  ƁAIɂ̂悤ɂȂ܂Bt@CǂݏoƂ́AÕt@
  C̏I[}[NɃe[vwbhʒu邱ƂɂāAt@C̐擪
  ubNǂݏo邱ƂɂȂ܂B܂At@Cǉď
  Ƃ́AÕt@C̏I[}[NɃwbhBĂȂ΂Ȃ܂B
  ΁Ãt@CAċL^ĂƂAÕt@C
  ̏I[}[ŃÃt@C̐擪ubN̊JnʒuƂ܂BR
  At@C̒g̕珑ݎn߂ƁÃt@C̒g
  ͎Ă܂܂B

  ł́Ãt@CɋL^ꂽe[vÃt@C
  o@K܂傤BƂāAL^e[v
  Afile-03 A[JCuꂽoƂlĂ݂܂BړI
  t@CL^ꂽʒuɃwbhړ邱ƂKvɂȂ܂B

  ܂A擪Ɋ߂ĂAfile-03 A[JCꂽʒu
  wbhړ܂傤B

       % mt rewind

         V
        /==================================================================/
       | B[file-01]E[file-02]E[file-03]E[file-04]E[file-05]E[file-06]E    /
        \================================================================/
                                  V: Tape Head  B: BOT Mark  E: EOF Mark

  file-03 L^Ă镔̓e[v̒́At@Cԍ 2 ̈ʒu
  B݃wbh BOT (e[v̓)ɂ܂AɈړ邽߂
  ́AEOF (t@CI[}[N) ӂXLbv邱ƂɂȂ܂B

       % mt fsf 2

  mt ̃IvVR}h fsf ́Aw EOF XLbvĎ̃t@
  C̐擪ubNɃwbhړR}hłBfsf 2 ł́Ä݂
  u 2 ̃t@CJnʒuɃwbhړ邱ƂӖĂ
  B

       % mt fsf 2

                             V
        /==================================================================/
       | B[file-01]E[file-02]E[file-03]E[file-04]E[file-05]E[file-06]E    /
        \================================================================/
                                  V: Tape Head  B: BOT Mark  E: EOF Mark

       % mt status
       SCSI 1 tape drive:
       File number=2, block number=0.
       Tape block size 1024 bytes. Density code 0x0 (default).
       Soft error count since last status=0
       General status bits on (81010000):
        EOF ONLINE IM_REP_EN

  ŃXe[^XӖĂ̂́ut@Cԍ 2 (Ȃ킿A
   file-02 A[JCĂ镔) ̏I[}[NvłA
  ΁ut@Cԍ 3 ̐擪ubNJnʒuvӖĂ܂Btar 
  gĂ݂܂傤B

       % tar tf /dev/nst0
       file-03

  Ӑ}ʂɁAfile-03 ̃A[JC܂BXe[^X\
  Ă݂܂B

       % mt status
       SCSI 1 tape drive:
       File number=2, block number=10.
       Tape block size 1024 bytes. Density code 0x0 (default).
       Soft error count since last status=0
       General status bits on (1010000):
        ONLINE IM_REP_EN

  ł̓Xe[^X EOF \ĂȂƂɒӂĂBtar
  łӂɃA[JCǂݏoƁAtar ͎g End of file }[N
  māAœǏo~܂B̓e[vɋL^Ă EOF 
  ͂܂ʂ̂̂łB

                                       V
        /==================================================================/
       | B[file-01]E[file-02]E[file-03 F]E[file-04]E[file-05]E[file-06]E  /
        \================================================================/
                                  V: Tape Head  B: BOT Mark  E: EOF Mark

  } F (摜ł͐) Atar  End of file }[NłB
  āAtar œǏóA܂wbh͋L^ꂽubN̒ɂ
  B̂܂܎̃A[JCA tar œǏoƂƁAx̓e
  [vɋL^ꂽ EOF }[NɓǂݍނƂɂȂAtar ͖̂
  ܂ɏI邱ƂɂȂ܂BA tar œǏoꍇ́ȂO

       % mt fsf

  ƂāAEOF }[NЂƂǂݔ΂͂̂łBƊԈႢ₷
  ƂȂ̂ŁAoĂĂB

  āA݂ mt fsf  file-03 A[JCꂽubN EOF }[N
  ɃwbhƂ܂B̃A[JCxǏoƂ͂ǂ
  ΂ł傤B߂Ȃڂ EOF }[Nǂݍ񂾂
  Ãt@C̐擪ɂȂ̂łB

                             V <====== V
        /==================================================================/
       | B[file-01]E[file-02]E[file-03]E[file-04]E[file-05]E[file-06]E    /
        \================================================================/
                                  V: Tape Head  B: BOT Mark  E: EOF Mark

  ̂߂ɂ́Aȉ̂悤ɂ܂B

       % mt bsfm 2

   mt ̊gꂽR}hŁAӂ邢 mt ɂ͂Ȃ̂܂B
  ̏ꍇ bsf  fsf gݍ킹ď邱ƂɂȂ̂łA킵
  ̂łł͏ȗ܂B

  ɁA݋L^Ăt@CɒǉċL^Ƃ̑
  Bmt eod ŁA݋L^ĂubN̍Ō EOF Ƀwbhړ
  ܂BA̋@\̓hCuɂĂ͂܂ȂƂ
  ŁAۂɂ߂ĊmFĂKv܂BA܂ȂĂ
  ƃIy[V̋L^ƂĂ fsf Ȃǂŏł܂B

  ŌɁAe[v߂Ĕro܂傤BhCu̎ނɈˑ
  邱Ƃ̂łȀꍇ

       % mt offline

  (KvȂ)IɊǂAhCue[v Eject 
  ܂B

  mt e[ṽIy[V͂AꂪKvłB
  A``dump ̋L^''Ōq܂AL^̏ԂmF̂
  ŁAsIy[V̓e̋L^ۑ邱Ƃ؂łBЗ
  Kp̃e[vpӂāA낢Ƃ߂Ă݂ĂB

  4.3.  MTX ̑(W^e[vhCȗ)

  ̃e[vAł^Cṽe[vfoCX܂B Archive
  Python 28849-XXX AHP Surestore 12000, Quantum DLT 2500 XT Ƃ
  W^̃hCułBĂ̏ꍇÃe[vp̃J[gb
  WE}KWɑUAhCu{̂ɑ}܂B̌AJ[g
  bWE}KWɑUꂽe[v̂ACӂ̕[fBO邱
  ƂɂāAۂɓǂݏł悤ɂȂ܂B

  ̃fBA`FW̍Ƃ̓hCu{̂ɐp̃XCb`āA
  蓮őłꍇ܂AۂɃ[fBOꂽe[v
  Î̂ǂmF邱ƂłAJ[gbWE}KW
  Uꂽe[v̏ԒʂɂfBA`FWłȂ肷ꍇ
  Ag肪܂悭ȂƂ΂΂܂B

  ͂̏͂̍ŏɏqׂ悤ɁA Leonard N. Zubkoff 
  (lnz@dandelion.com) 쐬EzzĂ MTX 𗘗p邱ƂɂāA
  ȒPɉ邱Ƃł܂B MTX  mtx ƂPƂ̃vOłB
  ݔzzĂo[W 1.1 ŁA Debian GNU/Linux (potato) ł
  oCipӂĂ܂B

  oCiłȂꍇłA kernel 2.0.30 ȍ~łΊȒPɃR
  pC邱Ƃł܂ (Âo[W̃J[lŗp
  ́A MTX ̔zzA[JCuɊ܂܂Ă mtx.doc  ``LINUX KERNEL
  REQUIREMENTS'' ̏͂QlɃwb_t@CɏȕύX OK 
  )B܂ARpC̍ۂɂ kernel ̃\[Xc[KvłB kernel
  ̃\[Xc[̏ԂɂẮuwb_t@CȂvƂG
  [ŃRpCɎs邱Ƃ܂Ȁꍇ Makefile 
  CFLAGS ̍s -I/usr/src/linux/include tĂB

    CFLAGS = -O6 -m486 -fomit-frame-pointer -I/usr/src/linux/include

  ł́Aۂ MTX gďW^e[vhCu𑀍삵Ă݂܂傤B
  łɃJ[gbWE}KWɂ̓e[vUĂA}KWhC
  u{̂ɑ}Ă̂Ƃ܂B

  ̏Ԃł́A܂ǂ̃e[v}KWɑUꂽԂ̂܂܂ŁAe[v
  փb_̂ʒuɃ[hĂ܂B߂ mt ŊmFƁA``e
  [v}ĂȂ'' ƂXe[^XAĂ܂B mtx ɂ
  Xe[^X\@\܂Bg mt Ƃ܂ŁAfo
  CXƃIvViR}h ``status'' t邾łB

       # mtx -f /dev/nst1 status
       Data Transfer Element:  Empty
       Storage Element 1:      Full
       Storage Element 2:      Full
       Storage Element 3:      Full
       Storage Element 4:      Full
       Storage Element 5:      Full
       Storage Element 6:      Full

  ``Data Transfer Element'' Ƃ̂ۂɓǂݏsuŁA݂
   (Empty) ɂȂĂ܂B ``Storage Element 1-6'' ́AJ[gbWE
  }KW̏ԂĂ܂Beԍ̓}KWł̑UŁAX
  g[WԍƌĂт܂B݂͘Zׂ̂Ẵ}KWɃe[vU
   (Full) ł邱ƂĂ܂B

  ł́A``Data Transfer Element'' Ƀe[v[hĂ݂܂傤B̑
   mtx łȂ܂BIvViR}h ``load'' ɁAXg[W
  ԍt邾łB

       # mtx -f /dev/nst1 load 1
       Loading Storage Element 1 into Data Transfer Element...done

  ňԖڂ̃e[v[h܂Bstatus R}hŊmFĂ݂
  傤B

       # mtx -f /dev/nst1 status
       Data Transfer Element:  Full (Storage Element 1 Loaded)
       Storage Element 1:      Empty
       Storage Element 2:      Full
       Storage Element 3:      Full
       Storage Element 4:      Full
       Storage Element 5:      Full
       Storage Element 6:      Full

  ``Data Transfer Element'' ɃXg[Wԍ 1 ̃e[v[hꂽ
  Ƃ킩܂BɁA}KW̃Xg[Wԍ 1 ̈ʒu͋ɂȂ
  Ă邱ƂmFł܂B

  ̏ԂɂȂ΁AƂ͒ʏ̃hCuƓl mt găe[v̑
  ł悤ɂȂĂ܂Bł́A[hꂽe[v}KWɖ
  ɂ͂ǂł傤B̓IvViR}h ``unload'' g
  łB

       # mtx -f /dev/nst1 unload 1
       Unloading Data Transfer Element into Storage Element 1...done

  e[ṽ[h́ACӂ̃Xg[Wԍɑ΂čs܂Bł́AXg[
  Wԍ 2 ̃e[v[hĂ݂܂B

       # mtx -f /dev/nst1 load 2
       Loading Storage Element 2 into Data Transfer Element...done

  ܂܂B̏ԂŁAʂ̃Xg[Wԍw肵ă[h
  ƁAɃ[hĂe[v͎I unload Aw肳ꂽe[v
  Ƀ[h܂B}KW̃Xg[ẂAԍłȂu
  ̃e[vvuÕe[vvƂw@\łBقǂ̃e[v 2
  [hꂽԂŁAIvViR}h ``next'' 𔭍sĂ݂܂
  B

       # mtx -f /dev/nst1 next
       Unloading Data Transfer Element into Storage Element 2...done
       Loading Storage Element 3 into Data Transfer Element...done

  Xg[Wԍ 2 ̃e[v unload AɃXg[Wԍ 3 ̃e
  [v[h܂BAxÕe[vɖ߂ɂ Iv
  ViR}h ``previous'' g܂B

       # mtx -f /dev/nst1 previous
       Unloading Data Transfer Element into Storage Element 3...done
       Loading Storage Element 2 into Data Transfer Element...done

  قǂ̏Ԃɖ߂Ƃ킩܂B

  ̑ɂ ``first (}KWɂŏ̃Xg[Wԍ̃e[v[h
  '' ``last (}KWɂŌ̃Xg[Wԍ̃e[v[h
  )'' Ȃǂ̃IvViR}h܂BȂÃR}h
  ́Adump-0.4b17 ȍ~ł΁Aۂ dump ̓rŃe[vGhɒB
  ƂvĎs邱Ƃł܂BcȃfBXNxɃobN
  AbvƂɂ͑ϕ֗ȋ@\łB

  5.  dump gobNAbv

  5.1.  obNAbvt@CVXȇI

  ł́Adump gĂ̋̓IȃobNAbvƂɂāAɉ
  Ă܂B

  obNAbv́uׂẴt@CVXevɑ΂čsƂłB

  AtXgA鎞ɁAKv̂Ȃt@CVXe
  ŁAdump Kv͂܂B/tmp Ɨt@CVXeȂA
  ͐^ɏO邱Ƃł܂Bɗނ镨ƂẮAproxy f[
  Ȃǂ̃LbVt@Cł傤B܂ANetnews  spool
  Aoverview database, history Ȃǂ́Aς肠߂Ă܂΁A
  O邱Ƃł܂B

  āASẴt@CVXeΏۂɂ܂BΏۂƂȂt@C
  VXéA/etc/fstab ̑5tB[h 1 ̃tO𗧂ĂĂ
  Bȉ́A̗łB

  ______________________________________________________________________
  # /etc/fstab
  #
  /dev/hda2  /                ext2  defaults,noquota         1 1
  /proc      /proc            proc  defaults,noquota         0 0
  /dev/sdb3  /tmp             ext2  defaults,noquota         0 2
  /dev/sdb2  /var             ext2  defaults,noquota         1 3
  /dev/sdd2  /usr             ext2  defaults,noquota         1 2
  /dev/sdd1  /usr/local       ext2  defaults,noquota         1 3
  /dev/sde1  /var/spool/news  ext2  defaults,noquota         0 4
  /dev/sdc1  /var/spool/ov    ext2  defaults,noquota         0 3
  /dev/hda3  /.d1             ext2  defaults,noquota         1 2
  /dev/hdb1  /.d2             ext2  defaults,usrquota        1 4
  /dev/sdb1  /.d3             ext2  defaults,ro,noquota      1 4
  /dev/sda5  /home            ext2  defaults,usrquota        1 3
  /dev/fd0   /mnt/floppy      ext2  defaults,noauto,noquota  0 0
  /dev/sdb4   none            swap  sw                       0 0
  ______________________________________________________________________

  ̗ł́A/tmp, /var/spool/news ɉ /proc  swap ̑ 5
  tB[h 0 ɂȂĂ܂B悭A炪 1 ɂȂĂl|
  ܂A܂Ӗ܂񂵁ANɌƒp̂ŁA
  łɒĂ܂傤B

  5.1.1.  obNAbvȂt@CO

  fBXN̋敪̏ԂɂẮAobNAbvt@CVXe
  ɁAobNAbvȂt@CQ܂܂Ă܂Ƃ܂B
  ǂĂOꍇ́Ap̃c[găt@Cgp
   i-node ɏO̖ڈ (no dump flag) 邱Ƃł܂B Proxy
  LbVfBNĝ悤ɁApɂɍXV邪obNAbv̈Ӗ
  Ȃt@CQɑ΂āA attribute ݒ肷Ƃ悢ł傤B

  킵g lsattr(1)  chattr(1) QƂė~̂łA

       # lsattr -d /var/spool/squid
       ------- /var/spool/squid
       # chattr +d /var/spool/squid
       # lsattr -d /var/spool/squid
       ------d /var/spool/squid

  ƂӂɁAchattr R}h +d  no dump flag 
  ́Adump ̑ΏۂO܂B̗ł́ASquid cache system gp
  LbVfBNgƂ̋Ȓgɑ΂āÂ悤Ȗڈ
  ܂BfBNgɑ΂Ă̖ڈ󂪂ƁǍ͒ɍ쐬
  t@CɂȂ܂B

   level 0 ̃t_v̍ۃftHgł͂̎w͖A
  Ɍʂ̂ level 1 ȍ~̃CN^obNAbv̎ɂȂ
  ܂B level 0 ̎ʂ𓾂ꍇ dump  h IvV
  w肷Kv܂B

  5.2.  tobNAbv

  5.2.1.  t@CVXeÎ~

  ł́A悢tobNAbvs܂B

  tobNAbv̑Oɂ́AVXeVO[U[hɈڍsAe
  t@CVXeÓIȏԂɂ fsck āAt@CVXeɖ
  ĂȂƂmFق悢ł傤BtobNAbv
  ߂ɍŝł͂܂񂩂Aʓ|łĂƂ߂
  B

       # init 1; exit

  ܂AŃVO[U[hɂȂ܂B

  ɁAt@CVXeЂƂA}EgAt@CVXe
  `FbNs܂B

       # umount /usr/local; e2fsck -afv /dev/sdd1

  (A}Eĝʓ|ł΁AVXeNƂɁA
  炩 Boot prompt  ``linux -b'' w肵āA[gt@CVX
  e}EgԂɂ@܂B)

  `FbN̓obNAbv̑ΏۂƂȂĂSẴt@CVXeɑ΂
  s܂B[gt@CVXe͒ӂKvŁAU[hI[
  Ń}EgAe2fsck ܂B

       # mount -r -n -o remount / ; e2fsck -afv /dev/hda3

  ׂẴ`FbNA

       # mount -w -n -o remount /

  ƂāAӂу[hCgŃ[gt@CVXe}Eg܂B
  ([hI[̂܂܂ƁAdump obNAbvcƂł܂
  B) lbg[Nz dump ꍇȂǁA/usr t@CVXe
  Kvȏꍇ́Ãt@CVXeēx}EgAlbg[N
  p\ȏԂɂ܂B

  5.2.2.  hCȕ

  ɁAobNAbvfBȀ܂Bł EXABYTE EXB-8200
  hCu (SCSI) ɁA112m  8mm f[^J[gbWgƂɂ
  B

  ŏɍsƂ́Ae[vwbh̃N[jOłBEXABYTE ̏ꍇ́AN
  [jOe[v𑕓UƁAIɃ[hăwbh̃N[jO
  sAŌɊ߂ Eject ܂B̍Ƃ́AƂ level 0 
  dump sۂɂ͕KsȂĂBe[v̓ǂݏ̍
  ɃG[N\mɌĂ܂B

  ꂩhCuɐVĩe[v𑕓U܂Be[vɂ͂炩߃x
  \Ă܂傤BT{ƁAƂł񂾂킯킩Ȃ
  ܂Bx̓éA܂łɍwe[v̒ʂԍŏ[
  Bq܂AxɂꂱꏑAʂɐp̊Ǘm[gp
  ӂāAׂȃ͂ɋL^邱Ƃ߂܂Be[vh
  CuɑUIAmt R}hŃXe[^XmF܂B

       # mt status
       SCSI 1 tape drive:
        :
        :

  ̃R}h̏o͂́AhCu̎ނɂĈقȂ܂Bł́Ae[
  v[hĂ邱ƂmFłΏ[łB

  5.2.3.  dump 

  āA悢 dump łBg͂قǕGł͂܂񂪁Ap
  [^̎w̎dɂƕȂ܂B(v0.3 Vo[Wł
  _Ȏw\ɂȂĂ܂Ał͌ÓTIȕ@ɏ]܂)

  ______________________________________________________________________
     gp@: dump `IvV' `p[^' `t@CVXe'
   - IvV: 0123456789BbhfusTdWn
     0 ` 9 :  dump level
     B : {[̃R[h
     b : 1 R[h̃ubNTCY(KB)
     h : nodump Agr[ge dump level
     f : o͐t@C(e[v)̎w
     d : L^x
     n : Iy[^ɒӂ𑣂
     s : e[v̒
     u : /etc/dumpdates XV
     T : /etc/dumpdates ɋL^w肷
     W : dump ̑ΏۂɂȂĂt@CVXe
               ĕ\
     w : dump Kvȃt@CVXe\
   - p[^
     IvV̏ɑΉp[^w肷B
     Ƃ΁A``sbf'' ̏ɃIvVׂꍇ́A
      dump sbf `e[v̒' `ubNTCY' `o͐'
               `t@CVXe'
     ƂɂȂB
   - t@CVXe
     dump t@CVXẽ}Eg|Cg܂̓foCX
  ______________________________________________________________________

  T^IȃR}h͈ȉ̂悤Ȃ̂ł:

       # dump 0uf /dev/nst0 /home

  ŏ̈̐́A0-9  Dump level łBڂ͌q܂A`0'
  tobNAbvӖĂƎvĂB`u' ́ÃCN
  ^obNAbvɔ /etc/dumpdates XV邱Ƃw
  ̂łB /etc/dumpdates ɂ́Adump ⃌xL^܂B
  ̏͂̌ dump vOɂăCN^obNAbv
  ۂ w, W IvVŎQƂ܂B

  e[v dump ꍇ blocksize  tape length wKv
  ł傤Bue[v̗eʂ͏[Ȃ͂Ȃ̂ɁAr tape end ɒB
  Ă܂vꍇ́ÂɍHvKvłBȂ肩ł
  AB option ŁAeʂ𑽂߂ɖĂ܂@܂B

       # dump 0uBf 2300000 /dev/nst0 /home

  ł́A8mm e[v̗eʂɂ悻 2.3GB Ƃ߂̌ (blocksize
   2.3GB l)  dump ɎwĂ܂Bdensity  tape
  length ̎w̓fBȀIołȂhCugꍇ dump
  ɃfBÃ^C~OĂ邽߂̃IvVłBA
  ߂̂قƂǂ̃hCu̓e[vGhƌoł̂ŁÂ悤
  ȕ@ł肪Ȃł傤B

   dump X^[g΁A̃bZ[WƂƂɃobNAbv
  ͐is܂B̂ƂAobNAbvI܂łɂ邨悻̎ԂȂ
  \܂B̃WúAŏ̂̓obNOEhɉ񂳂ɁA
  tHAOEhŎsĂBe[vGhɒBAȂ
  ̃G[ꍇ́AΘbIȑI߂邱Ƃ邩
  łB

  dump ɏIA܂e[vcʂɗ]Tꍇ́Â܂ܑ
  ʂ̃t@CVXe dump sƂł܂B

  5.3.  _vxƃCN^obNAbv

  dump ̓_vxw肳邱ƂɂāAobNAbv̓
  ܂B_vx 0-9 ͈̔͂̐ŁAw肪Ȃꍇ 1 w肳
  ĂƉ肳܂B_vxw肳ƁA菬
  ̃_vx dump sꂽɍXVꂽt@C
  obNAbv̑Ώۂɂ܂B

  Ƃ΁Alevel-4 ̃obNAbv̌Alevel-5 ̃obNAbvs
  ƁA level-4 obNAbvȍ~ɍXVꂽt@C level-5 ̃obN
  AbvA[JCuɋL^邱ƂɂȂ܂B

  ̎dg݂𗘗pƁACN^obNAbvȒPɂł邱
  ɂȂ܂BƂ΁A

  ______________________________________________________________________
     1    level 0
     2    level 1
     3    level 2
     4    level 3
     5    level 4
     6    level 5
     7    level 6
     8    level 7
     9    level 8
  ______________________________________________________________________

  Ƃ dump sƁA2 ڈȍ~͑OXV̂t@C
  obNAbv܂B邱ƂɂāAobNAbvɗv鎞
  Ԃőɐߖ񂷂邱Ƃł܂B

  ƋÂ@ƂẮA``nmC̓̃V[PX'' Ƃ@
   dump level ̃XPW[gނƂ܂B

  Ƃ:

  ______________________________________________________________________
  0    -> 3 -> 2 -> 5 -> 4 -> 7 -> 6 -> 9 -> 8 ->
  1(a) -> 3 -> 2 -> 5 -> 4 -> 7 -> 6 -> 9 -> 8 ->
  1(b) -> 3 -> 2 -> 5 -> 4 -> 7 -> 6 -> 9 -> 8 -> 0 ɖ߂
  ______________________________________________________________________

  Ƃ dump i߂܂Blevel 0 ̃e[v͈Sȏꏊɉivۊ
  Alevel 0 dump ł͏ɐVe[vg悤ɂ܂B level 1 ̃e
  [v̓[e[V (̐}̗ł 2Zbg) pӂ܂BȊO
  e[v 1 set ŏ[łB

  ̕@̃bǵA鎞_ł̃t@CVXȅԂ𒷂ԕۑ
  łAobNAbv̎ԂƃfBAߖł邱ƂłB

  Ƃ level 0 ̃tobNAbv̍ۂɂ̓VO[U[hō
  ܂Bł́Alevel 1 ȍ~̃CN^obNAbv̍ۂɂ͂
  ׂł傤BIɃobNAbv悤ɂȂƁAV
  Xẻ^p߂ĂȂAƂ̂ł傤B̓}`[
  U[hłĂ\ȂƎvĂ܂B͉̂^p̗ւƂ
  AS邩̑IɂȂ܂B

  ÃCN^obNAbv̒ɃNeBJȃn[h
  EFAȂǂ̃eiX\肳Ă悤ȃP[Xł́AVXe~
  ȌԂmɕۑ邽߂ɁA level 1 ̃CN^obN
  AbvVO[U[hōsق悢ł傤B

  5.4.  dump ̋L^

  ``hCȕ'' ̍Łue[ṽxɂꂱꏑAʂɐ
  p̊Ǘm[gpӂāAׂȃ͂ɋL^ق悢vƏ
  ܂B́AL^Ȃ΂ȂȂڂxɎ܂قǏȂ
  ͂ȂłB

  ̋L^KvɂȂ̂ restore ̎łBǂ̃e[v̂ǂ̈ʒuɁA
  ̃t@CVXeL^Ă̂Aɂ킩悤ɂĂ
  dvłB (Ƃ͑AypjbNɂȂĂ肵܂
  )

  ͂ЂƂAp̊Ǘm[gAv^o͂ۑoC_p
  āA dump sĂԂɏڍׂȃL^悤ɂ܂傤BL
  ^ĂƂ:

  ______________________________________________________________________
  [Tape No.nnnn]  e[v̂̂̒ʂԍ
  File count:     e[v擪̈ʒu
  Date:           t
  Host:           dump ̑ΏۂƂȂzXg
  Filesystem:     t@CVXe̖O
  Device:         t@CVXẽfoCX
  Level:          dump level
  Blocks:         A[JCꂽubN
  Length:         e[vł̃A[JC̐߂钷
  ______________________________________________________________________

  炢ŏ[ł傤BƂ΁A

  ______________________________________________________________________
  [Tape No.0024]
  Date:           Wed Nov 12 12:39:57 1996
  File count:     1
  Host:           nicorn
  Filesystem:     /home
  Device:         /dev/sda5
  Level:          0
  Blocks:         392556
  Length:         0.16
  ______________________________________________________________________

  ƂłB́Adump ̃Xe[ggo͂ perl ȂǂŐ`
  ΊȒPłAقǎԂ͂܂BvgAEg
  āAoC_ɒԂĂOK łB

  obNAbvƂ͒ڂ̊֌W͂܂񂪁Ał fdisk -l ̏o͂Ȃ
  vgAEgĂƁÂ̍ۂ̕ɂ͎QlɂȂł傤B

       (FYI: dump s̍ۂɃOIɕۑ悤ȃXNvg
       
       http://shaq.pnl.gov:2080/~d3c572/docs/
       ŌJĂ܂B͂ɋCÂOɎ̂̂gn
       Ă܂̂ŏڂƂ͂킩܂B)

  ЂƂ]͂΂ĂƂ́AA[JCɊi[ꂽt@
  C̈ꗗeLXgt@CɕۑĂƂłB dump s
  Ƃ mt R}hŃe[v߂A restore -t sĂ̏o͂
  ۑƂ悢ł傤B̃t@CAƂ
  /var/spool/adm/dump_index/ Ȃǂ̃fBNgȉɕۊǂĂ΁A
  I restore ̍ۂɁAǂ̃A[JCɖړĨt@CĂ̂
  grep R}hŒToƂeՂɂȂ܂BɁArestore -t s
  ĂƂŁA쐬΂̃A[JCǂݏo邩ǂ
  AmFł邱ƂɂȂ܂B

  5.5.  rdump

  rdump 𗘗pălbg[Nz dump s邱Ƃł܂B
  Ȃǂ dump ƓłAdump ̎wɂ́A[g}V
  Kv܂B ( rdump ̎̂ dump ̂̂ł)Bȉ̗́A
  [J}V /home [g}V `tapeserver' ɐڑꂽe[
  vfoCX dump 邱ƂĂ܂:

       # rdump 0uf tapeserver:/dev/nst0 /home

  lbg[Nz dump ۂɂ́A rsh pX[hȂɎsł
  ɂȂĂKv܂BɁAdump ̓[g}V rmt
  N܂̂ŁA rmt  rsh ł̎st@CpXɊ܂܂Ă
  邱ƂɂȂ܂BLinux ̃fBXgr[VɂẮA rmt
  st@CpXɒuĂȂƂ܂B

  ______________________________________________________________________
  # rsh remotehost which rmt
  ______________________________________________________________________

  ̌ʁArmt Ȃꍇ́AV{bNN쐬 rmt
   rsh ł̎st@CpXɊ܂܂悤ɂĂB

  ܂AʏobNAbv̍Ƃ root ōsƂɂȂ܂A root p
  X[hȂɃ[gVFsł̓ZLeBlƖ
  肪܂B

  ȂƂ댯邽߂ɂ́Adump p uid pӂ悢
  ł傤B菇͈ȉ̒ʂłB

  o  LAN ׂ̂ẴzXg vipw Ń[U fsdump ǉBpX
     [h ``*'' ł悢B

  o  [U fsdump ̃z[fBNg /etc/fsdump ɂB

  o  zXg OS  Linux ̏ꍇ̓[U fsdump  disk O[vɒǉ
     B (̑ OS ɂÃO[v݂͂ł)

  o  e[vhCu̐ڑꂽzXg /etc/fsdump  .rhostst@C
     쐬ALAN ̃[U fsdump pX[hȂŃANZXł悤
     ɋLqB

  o  [g dump  su  fsdump ɂȂčƂBcron N
     ꍇAfsdump  cron 𗘗pB

  5.6.  e[v̕ۊ

  level 0 ̃e[v͂ł邾ԕۊǂ邱Ƃ]܂܂B܂
  ȂƂłAe[v͂̐AMقECECɎア
  ŁAxω̌ꏊⒼ˓̓ꏊȂǂɕۊǂƁAf[^
  ɓǂݏoȂȂ邱Ƃ܂B

  ܂Alevel 0  1 ̃e[v̓}V̒uĂ镔ȊOA\ł
  ʂ̌ɕۊǂ邱ƂĂ܂B͉΍ЂȂǂ̎̂ɂ
  āA}Vƃe[v̗xɎĂ܂Ƃ邽߂łB

  I restore vɃT[rXꍇ́A level 2-9 ̃e[v
  ̓}VƓɕۊǂĂꍇł傤BłǗ
  ҈ȊO̐lԂG邱Ƃ̂łꏊɃe[vۊǂĂԂ́AZ
  LeBD܂܂B

  Ƃ]܂Ԃ͑ω΁EϔM̋ɂȂǂɓĎ{邱ƂłB
  傰ƎvȂ΁A߂ăe[ṽxɂ́ulǂłg
  킩Ȃv񂾂悤ɂ܂傤BgǂݏoĂ܂
  ΓƂȂ̂łAӂl̍sׂ悤ȂƂ͂Ȃ
  ق܂łB ``dump ̋L^''łGꂽ悤ɁAʂ̃m[gȂǂɏڍ
  ȋL^ۊǂĂ΁Ǎɂ͂Ȃ܂B

  level 0 ̃e[v͒IɃ[hĂ݂āA[hG[NȂƂ
  mFƈSƂĂ܂A܂ł͖̂{ɑςȂ̂ŁA
  قǗ]͂ꍇɌł傤 (͂Ă܂)B
  I level 0 ̃t_vVe[vɍsmłB

  5.7.  XPW[O

  łƂ肠蓮ŃobNAbv邱Ƃł悤ɂȂ܂B
  AދȍƂ͒Ȃ̂ŁAł邾Ƃ邱Ƃl
  ܂傤BɁAǂꂭ炢̕pxŃobNAbv̂ÃXP
  W[lKv܂B

  obNAbv̕px́AVXeǂ̂悤ɗpĂ邩ɂĈق
  ܂B܂AobNAbvƂlǂ̒x̘J͂
  AobNAbvA[JCuɂ͂ǂ̒x̊SvĂ̂A
  ̊Smۂ邽߂ɋ]ɂȂ͉̂Aǂꂭ炢̃RXgKv
  ɂȂ邩AȂǂlɓđIɔfȂ΂Ȃ܂B

  zIɂ́A}VǵAȂ炸xCN^obNAb
  vׂłAlx[XŗpĂꍇ́ÅԂJĂ
  ܂Ȃł傤Btɐ_oȐl͓̃t@CVXe͐
  ɈxobNAbvƍl邩m܂B

  ڈƂāũCN^obNAbv̑SʂA{̃e[v
  Ɏ܂ȂقǊԊuȂ悤ɂvƂ͂ЂƂ̏łBr
  Ńe[v̂ւȂ΁AlōƂs\邩
  łB

  Ae[v̗]T肠܂ƂĂAŒTɈx̓obNAbv
  XV邱ƂڈɂĂBf[^́AVقǏdvłP[
  XقƂǂŁAJÕf[^ĂA̖ɂȂꍇ
  ܂B

  ܂AobNAbvs鎞ԂlĂBlevel 0 ̃tob
  NAbv̍ۂɂ́AVXẻ^p~Ȃ΂Ȃ܂BȊO
  level ̃obNAbvƂAł΃VXeׂ̕ႭAt@CVX
  e̍XVpxႢԑ ([Ȃ) I񂾕悢ł傤B

  ̃oXlāAȂ̃VXeɍœKȃXPW[O
  oĂB̃XPW[OɁAe[vhCũN[j
  OƂ̂YꂸɁB

  6.  restore

  restore(8) ́Adump(8) gč쐬ꂽA[JCt@C
  oAt@CVXeɕ邽߂̃vOłBt@CVXe
  Ŝ̕xɍsƂł܂AΘbIɕKvȃt@CI
  AIȕsƂ\łB dump  restore pCvőg
  킹邱ƂɂāAt@CVXe̒gAʂ̃t@CVXe
  ɃRs[邱Ƃł܂B rdump ƓlArrestore ̓[gzXg
  ɐڑꂽe[vhCũA[JCuǏoƂł܂B

  ______________________________________________________________________
     gp@: restore  `L[' [L[C]
  L[ (Ȃ̂̂):
   i    ΘbIɃt@Co
   r    A[JCŜJgfBNgɎo
   R    ftXgAĊJ
   t    A[JC̃t@C̃Xgo͂
   C    t@CVXeƃA[JCr
   T    e|fBNgw肷
   s    e[v̒̃A[JC̈ʒuw肷
   x    w肵t@CA[JCo
   f    A[JCt@Cw肷
   h    fBNgw肵ƂɁAfBNĝ݂Ώۂɂ
   v    璷Ɏs
   y    G[Ă₢킹Ȃ
  ______________________________________________________________________

  T^IȎgƂĂ:

  ______________________________________________________________________
  restore rf /dev/nst0
    (e[ṽA[JCJgfBNg
     t@CׂĎo)
  restore isf 3 /dev/nst0
    (e[v 3 Ԗڂ̃A[JCΘbIɃt@Co)
  rrestore tf  tapeserver:/dev/nst0
    (zXg tapeserver ɐڑꂽe[vA[JC
    Xgo)
  ______________________________________________________________________

  Ȃǂ܂B

  g͂قǂނ܂񂪁AƓȃc[Ȃ̂ňx
  ͑삵ĊĂKv܂B{IȑɊւ
  restore(8) }jǍJԂɂȂ̂ŁAł͏ȗ܂B

  6.1.  XgA̍ۂ̒

  ΘbIɃt@C̕XgAۂɁAʓIɂ͒ڃ^[QbgƂ
  fBNgɏ㏑̂ł͂ȂÃfBNgJgfB
  Ngɂăt@C߂ǍサׂꏊɃt@Cړ
  ܂BtXgA̍ۂɂ́AtH[}bgfBXN}EgA
  }Eg|CgɈړĂ restore N܂BāAroot
  p[eBV܂߂tXgA̍ۂɂ́Ap̃XL[tbs
  [fBXNȂǂKvƂȂ܂B

  ӂKvȂ̂́AtXgA̍ۂɃA[JCt@Co
  ԂłB r R}hŃA[JCŜWJꍇ́AK level 0
  ̃A[JCJnKv܂B

  ܂A dump xɁAႢ̃x dump s
  AtXgA̍ۂɂ͖ɂȂ level łĂ܂BƂ
  ΁A``nmC̓̃V[PX'' ɂ

  ______________________________________________________________________
  0 3 2 5 4 7 6 9 8
  ______________________________________________________________________

   dump 𑱂P[Xł́Alevel-3 ̃A[JĆǍɑ
  level-2  dump sꂽɖɂȂ܂B悤ɁA level-5 
  A[JĆǍɑ level-4  dump sꂽɁAɂȂ
  ܂Bɒ[ɂƁAlevel-0  dump s΁A܂ł
  level-[1-9] ̃A[JĆAׂĖłB

  āAtXgAۂɂ́AɂȂx̃obNAbv
  ΂ restore s邱ƂɂȂ܂BL̃V[PX̏ꍇA

  ______________________________________________________________________
  0 2 4 6 8
  ______________________________________________________________________

   restore Ă΁At@CVXe͍Ō̃obNAbv̏Ԃɖ
  ܂B

   ``nmC̓V[PX'' ɂĂ̂܂ restore 悤
  ƂǂȂł傤B

  level-2 ̃e[v restore 悤ƂƁA``Incremental tape too
  high'' ƃG[oĂ܂Aȍ~ restore ł ``Incremental
  tape too low'' Ƃ܂B

  ̃G[oꍇ́Â܂ restore 𑱂ĂɃtX
  gAł܂񂩂Aŏ restore 蒼ĂB

  (ԂŖɂȂĂ܂xĂ܂Ƃ ``nmC̓
  V[PX'' ɈӖȂ킯ł͂܂BpɂɍXVt@C
  VXéAߓnIȏԂł邾ԕێAȂobNAb
  ṽfBAߖ񂷂邽߂ɂ́Â悢@Ƃ܂B)

  ЂƂCȂ΂Ȃ̂́Arestore ͔rI傫ȃe|
  Xy[XKvƂƂƂłB Rescue Disk Ȃǂŕ̂߂
  NƂɂ́Aʏ킸ȃe|Xy[XpӂĂ܂
  B悤ƂfBXNɂ́AR mke2fs ŐVɃt@CVXe
  쐬܂AƗpe|Xy[X̂߂ɂAʂ̋󂢂Ăt@
  CVXe쐬ĂBāÃXy[X /tmp Ƀ}Eg
  邩Arestore  T găe|Xy[XƂĎw肷悤ɂ
  ĂB͂YꂪȂƂȂ̂ŒӂKvłB

  ƁAႢĂ܂̂łA dump/restore ̓fBXÑu
  [gubNȂǂ͕ۑ/܂BtXgAɂ OS ̃u
  [gɊւݒĊmFĂB

  6.2.  tXgA̎菇

  ȏ̂Ƃӂ܂ŁAguɂătXgAKvɂȂP
  [X̎菇QlƂĂ܂Ƃ߂Ă܂B

  o  n[hEFǍ̏ႪȂA܂̖B

  o  dump 󋵂L^m[g悭ɂŁA̎菇ɏo
     mFB

  o  e[vhCuɃZbge[v́Amb`݋֎~ɂȂĂ
     邱ƂKmFB

  o  XL[VXeŋNB

  o  ̃^[QbgƂȂfBXNtH[}bgB

  o  ̃^[QbgƂȂfBXÑfBNgɃ}EgB

  o  restore gpe|Xy[XmۂB

  o  CN^A[JCɃXgAۂɂ́AŌ̃XgA
     I܂ ./restoresymtable ȂB

  o  OS ̃u[gi (lilo Ȃ)Đݒ肷B

  o  restore ׂďIAɐƂmFł

     o  ./restoresymtable 폜

     o  level 0  dump Ve[vɍsB (Âe[v̊ԕۑ
        )

  7.  obNAbv͖{ɕKv?

  āAobNAbv͖{ɕKvȂ̂ł傤?

  uăCXg[΁AłށvƂl܂BłI
   Linux gĂ΁At@CVXeɂ͋Jčグv
  OÃhLgA؂Ȑlu^[z[
  fBNĝǂɂ܂BxĂ܂̃t@C
  ́AVXeăCXg[ĂA߂Ă܂B
  āAȂVXêɎ (̏ꍇA/etc ̃t@C
  ̑唼ɂ͎肪Ă܂)AƎɃ\tgEFÃCXg[Ă
  肵AQ͂Ɋg債܂BȂ̓VXeăCXg[
  AׂẴRtBO[V蒼A\tgEFAʂ̌`
  œ삷悤ɃRpCECXg[邱ƂɂȂł傤B

  ``ext2 t@CVXe͊Ȃ̂ł߂ȂƂł͉ȂB
  ăobNAbv͕KvȂ'' Ƃӌ܂Bm ext2 t@C
  VXej]Ƃ͂قƂǂ܂B̌oł́Aext2
  t@CVXe\tgEFA̖肪Ŕj󂳂Ă܂Ƃ
  ܂B

  AǂȂɒӂ͂ĂAt@CɊւguɑ
  ܂B郆[UЂƂ̃t@C폜Ă܂ƂAyx̃~X
  ΁An[hEFÃguŃt@CVXeɖ𐶂
  ܂Ƃ܂B SCSI zXgA_v^Ɉُ킪ċ@\~
  Ă܂oĂ܂B̎ e2fsck ł͏CłȂG[
  fBXNɐĂ܂AĂ܂̃f[^񕜂ɂ
  obNAbvɗȊO܂łB

  obNAbv̍Ƃ́Aꎩ̂VXẽ\[XKvƂ܂A
  ɂuƂĂދvȍƂłBA͂Ȃɂ؂ȔCӕی
  ƍlĂBA̕ӂ̕یЂgu̎ɂꂱꗝR
  ĎxԂ̂ɔׂ΁AƐŊmȕیłB

  A.  ̕ɂ

  A.1.  Copyright notice

  Copyright(c) 1998,1999 by FUKUSHIMA Osamu

  ̒̕쌠(C)͕C <fuku@amorph.net> ێ܂B̒
  \SẴRs[Ɏc邩A͎̕RɕEzz邱
  Ƃł܂BIɔzzꍇɂ́A쌠ɊւLqƊSȕ
  ̍ݏ𕹋LƋɁAꂪIȔzzł邱Ƃ𖾋L悤
  肢܂BȂA̕EzzɂẮA쌠ێ҂̋
  Kv܂B

  A.2.  ӔC̕

  ̓̕e͖ۏ؂łA͖{̓eɂĂ̐ӔC۔F
  B{Ɋ܂܂ĂȂǂgp̂́ASēǎ҂̐ӔCōsĂ
  B

  A.3.  ӎ

  W^e[vhCȕ͂MɂAmdb (mdb\[V
  Y) l猟ؗp@ނ؂肵܂B肪Ƃ܂B

  A.4.  tB[hobN

  ERgEȂǂ̕Ɋւ邲ӌ:

  FUKUSHIMA Osamu <fuku@amorph.rim.or.jp>

  ܂ł肢܂B

  A.5.  

  1998N 420  Ŕs (Revision 1.3)
  1998N 6 3  foCXt@C permission ɊւLqǉB
                  Leonard N. Zubkoff  (lnz@dandelion.com) 쐬Ezz
                  Ă MTX ɊւLqǉB
  1998N1115  e[vhCuSʂɊււ̃|C^ǉB
  1998N1212  dump-0.3  kernel 2.0.x Ŏg邱Ƃ𖾋LB
  1999N 228  e2compr gp̐ɊւLqǉB
  1999N 310  2Ŕs (Revision 1.4)
  1999N 523  rmt sPATHɊ܂܂ĂȂꍇɊւLqǉB
  1999N 730  restore ̍ۂ̒ӓ_ǉB
  1999N1130  Stelian Pop ɂV 0.4 beta V[YɊւċLځB
  2000N 121  0.4 beta JTCg̕ύXB
  2000N 8 1  MTX Ɋւ͂ǉ.

