pc s vice disky

[Zdenek Havrlik]

http://vychodil.inf.upol.cz/publications/white-papers/lvm/#LVMUSAGE
asi nejak takto, to byla verze LVM1, ted je LVM2 je krapet vychytanejsi....

v praxi pak treba :
[root at server utility]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/hda1
  VG Name               lvm02
  PV Size               298,06 GB / not usable 0
  Allocatable           yes (but full)
  PE Size (KByte)       65536
  Total PE              4769
  Free PE               0
  Allocated PE          4769
  PV UUID               pfBQjn-TTAe-sX8I-KVXB-as3c-2bC6-ZNUyvO

  --- Physical volume ---
  PV Name               /dev/hdb1
  VG Name               lvm02
  PV Size               298,00 GB / not usable 0
  Allocatable           yes (but full)
  PE Size (KByte)       65536
  Total PE              4768
  Free PE               0
  Allocated PE          4768
  PV UUID               3N1mfe-V7xK-6Lej-UmsU-5MkJ-qjPM-b9OxtL

  --- Physical volume ---
  PV Name               /dev/hdc1
  VG Name               lvm02
  PV Size               298,06 GB / not usable 0
  Allocatable           yes (but full)
  PE Size (KByte)       65536
  Total PE              4769
  Free PE               0
  Allocated PE          4769
  PV UUID               hbjxJK-0va0-fwAu-A15L-iU1g-or6T-L1gvKV

  --- Physical volume ---
  PV Name               /dev/hdd1
  VG Name               lvm02
  PV Size               298,06 GB / not usable 0
  Allocatable           yes (but full)
  PE Size (KByte)       65536
  Total PE              4769
  Free PE               0
  Allocated PE          4769
  PV UUID               j0dS9k-OzJz-xMb4-1bJf-alAT-WSk5-jEiRKB

  --- Physical volume ---
  PV Name               /dev/hde1
  VG Name               lvm02
  PV Size               298,06 GB / not usable 0
  Allocatable           yes (but full)
  PE Size (KByte)       65536
  Total PE              4769
  Free PE               0
  Allocated PE          4769
  PV UUID               20FT7h-0mJq-px4o-tPd0-IReK-MrBt-xyaUcA

  --- Physical volume ---
  PV Name               /dev/hdg1
  VG Name               lvm02
  PV Size               298,06 GB / not usable 0
  Allocatable           yes (but full)
  PE Size (KByte)       65536
  Total PE              4769
  Free PE               0
  Allocated PE          4769
  PV UUID               C6t8ey-pDq9-5Y5Q-q9Wv-JjH5-2kLP-E2lpJ9

  --- Physical volume ---
  PV Name               /dev/hdh1
  VG Name               lvm02
  PV Size               298,06 GB / not usable 0
  Allocatable           yes (but full)
  PE Size (KByte)       65536
  Total PE              4769
  Free PE               0
  Allocated PE          4769
  PV UUID               2HiCfp-8lgt-9JmM-wX1E-opZb-pb50-qw95Y6

  --- Physical volume ---
  PV Name               /dev/hdf1
  VG Name               lvm02
  PV Size               298,06 GB / not usable 0
  Allocatable           yes (but full)
  PE Size (KByte)       65536
  Total PE              4769
  Free PE               0
  Allocated PE          4769
  PV UUID               RAeFSh-N0iD-GNeh-m9aF-EvmR-nvaL-OZ4m0W

[root at server utility]#
[root at server utility]# lvdisplay
  --- Logical volume ---
  LV Name                /dev/lvm02/media1
  VG Name                lvm02
  LV UUID                yHnCPr-w0uy-JMK9-jLjn-MZZr-CXFv-1U6Sfh
  LV Write Access        read/write
  LV Status              available
  # open                 1
  LV Size                2,33 TB
  Current LE             38151
  Segments               16
  Allocation             inherit
  Read ahead sectors     0
  Block device           253:0

[root at server ut[root at server utility]# vgdisplay
  --- Volume group ---
  VG Name               lvm02
  System ID
  Format                lvm2
  Metadata Areas        8
  Metadata Sequence No  256
  VG Access             read/write
  VG Status             resizable
  MAX LV                255
  Cur LV                1
  Open LV               1
  Max PV                255
  Cur PV                8
  Act PV                8
  VG Size               2,33 TB
  PE Size               64,00 MB
  Total PE              38151
  Alloc PE / Size       38151 / 2,33 TB
  Free  PE / Size       0 / 0
  VG UUID               2a4QWV-ajMN-6eFs-ZGK6-P15W-Bi8P-6AlSUX

[root at server utility]#  


zdenek






Josef Hrabec napsal(a):

>Mohu se zeptat, co je ten LVM na tom linuxu zac? (z tech obrazku to moc
>patrne neni) To je nejaky sw projekt, ovladac nebo tak neco? Znam treba
>LVM z AIX-u, tam se pod tou zkratkou mysli Logical Volume Manager a pro
>takoveto pouziti by byl tento LVM naprosto tim nejlepsim resenim - bohuzel
>nevim o tom, ze by se neco takoveho vyskytovalo pod FreeBSD nebo pod
>Linuxem.
>
>
>Pepa.
>
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>>ja mam 11HDD viz: http://www.lhotkanet.cz/galerie/thumbnails.php?album=29
>>bezi na tom teda linux ne BSD ale predpokladam ze je to podobne.
>>mam dva disky na raid1 na nich je system a  home uzivatelu
>>zbyle disky jsou v LVM, mam vyzkouseno ze pokud disk v LVM vypadne, tak
>>po nahrazeni novym, a opravou ext3 prijdu pouze o data na onom disku.
>>
>>zdenek
>>
>>Josef Hrabec napsal(a):
>>
>>    
>>
>>>Dobry den,
>>>
>>>mame pc s dvema pci/sata radici, ktere ma dohromady 12 pevnych disku.
>>>Server slouzi jako domaci uloziste multimedialnich dat. V soucasne chvili
>>>je na kazdem disku vytvoren separatni filesystem - tedy 12 filesystemu.
>>>
>>>A rad bych se vas zeptal, zda-li mate nekdo pozitivni zkusenosti s
>>>pouzitim nejakeho sw raid-u nebo spolecneho logical volume slozeneho z
>>>vice disku. Cilem by melo byt vytvoreni kontinualniho datoveho uloziste
>>>narozdil od situace, kdy je dostupny diskovy prostor "rozsekan" do 12-ti
>>>casti podle disku.
>>>
>>>Kdyby v pripade poruchy jednoho disku, byla data na tomto disku ulozena
>>>ztracena, vubec by to nevadilo. Protoze v situaci, kdy je nyni kazdy disk
>>>"zvlast" (bez zalohy), muze k takove situaci tak ci onak dojit a data na
>>>nich ulozena nejsou nikterak zivotne dulezita. Spis by ale bylo vice
>>>problematicke, kdyby v pripade vypadku jednoho disku byla ztracena
>>>veskera
>>>data v takovem logical volume.
>>>
>>>Mate nekdo prosim nejaky typ, jak rozumne spojit nekolik disku do
>>>spolecneho diskoveho prostoru?
>>>
>>>Diky,
>>>Pepa.
>>>
>>>
>>>
>>>
>>>
>>>      
>>>
>>--
>>FreeBSD mailing list (users-l at freebsd.cz)
>>http://www.freebsd.cz/listserv/listinfo/users-l
>>
>>    
>>
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