4.12 Interrogation des objets EVMS

On peut interroger tous les objets EVMS avec la commandes Query.

Interrogation des segments :

 query:Segments
 Segment Name: cciss/c1d1p1
 Major: 253
 Minor: 36
 Active: TRUE
 Segment Size: 135.00 GB
 Starting LBA: 63
 Segment Type: Data

Recherche du segment constituant le users2vol

 EVMS: q:chi,/dev/evms/users2vol

 Segment Name: cciss/c0d22
 Major: 254
 Minor: 42
 Active: TRUE
 Segment Size: 34.84 GB
 Starting LBA: 69204960
 Segment Type: Data

Recherche du logical disk (lun) constituant le segment cciss/c0d22

 EVMS: q:chi,cciss/c0d22

 Logical Disk Name: cciss/c0d2
 Major: 104
 Minor: 32
 Active: TRUE
 Logical Disk Size: 67.84 GB
 Logical Disk Geometry: 17434 Cylinders, 255 Heads, 32 Sectors per Track, 512 Bytes per Sector
 LBA of the 1024 Cylinder Limit: 8347680

==> on a donc la moitié de la lun utilisée par users2vol

Recherche des segments hébergés par la lun cciss/c0d2

 EVMS: q:par,cciss/c0d2

 Segment Name: cciss/c0d2_mbr
 Major: 0
 Minor: 0
 Active: FALSE
 Segment Size: 16.00 KB
 Starting LBA: 0
 Segment Type: Metadata
br>
 Segment Name: cciss/c0d21       
 Major: 254
 Minor: 40
 Active: TRUE
 Segment Size: 33.00 GB
 Starting LBA: 32
 Segment Type: Data



 Segment Name: cciss/c0d22    (le user2vol précedent)
 Major: 254
 Minor: 42
 Active: TRUE
 Segment Size: 34.84 GB
 Starting LBA: 69204960
 Segment Type: Data

quoi est dédié le segment cciss/c0d21

 EVMS: q:par,cciss/c0d21

 Volume Name: /dev/evms/usersvol
 Major: 254
 Minor: 41
 Active: TRUE
 Volume Size: 33.00 GB
 Minor Number: 41
 Mount Point: /users
 Filesystem: ReiserFS
 Max Filesystem Size: 16.00 TB
 Min Filesystem Size: 10.87 GB

Liste des volumes d’un container

 evms_query volumes -a <container>

Liste des régions d’un container

 evms_query regions -a <container>

Une belle sortie formattée proprement avec la commande evms_query

 evms_query objects -i |sed ‘s/^.*: //’| paste - - - - - - -| column -t

 cciss/c0d0               Disk     Data       104,0   143305920  LocalDskMgr
 cciss/c0d1               Disk     Data       104,16  143305920  LocalDskMgr
 cciss/c0d2               Disk     Data       104,32  143305920  LocalDskMgr
 mpath0                   Disk     Data       253,15  62914560   LocalDskMgr
 mpath1                   Disk     Data       253,16  62914560   LocalDskMgr
 mpath2                   Disk     Data       253,17  62914560   LocalDskMgr
 mpath3                   Disk     Data       253,18  62914560   LocalDskMgr
 mpath4                   Disk     Data       253,19  62914560   LocalDskMgr
 mpath5                   Disk     Data       253,20  62914560   LocalDskMgr
 mpath6                   Disk     Data       253,21  62914560   LocalDskMgr
 mpath7                   Disk     Data       253,22  62914560   LocalDskMgr
 cciss/c0d0_mbr           Segment  Metadata   0,0     63         DosSegMgr
 cciss/c0d0p1             Segment  Data       253,0   273042     DosSegMgr
 cciss/c0d0p2             Segment  Data       253,2   100036755  DosSegMgr
 cciss/c0d0p3             Segment  Data       253,13  42989940   DosSegMgr
 cciss/c0d0_freespace1    Segment  Freespace  0,0     6120       DosSegMgr
 lvm2/system/crashvol     Region   Data       253,3   50331648   LVM2
 lvm2/system/homevol      Region   Data       253,4   262144     LVM2
 lvm2/system/optvol       Region   Data       253,5   4194304    LVM2
 lvm2/system/rootvol      Region   Data       253,6   2097152    LVM2
 lvm2/system/sharevol     Region   Data       253,7   999424     LVM2
 lvm2/system/softvol      Region   Data       253,8   17924096   LVM2
 lvm2/system/swapvol      Region   Data       253,9   4194304    LVM2
 lvm2/system/tmpvol       Region   Data       253,10  4997120    LVM2
 lvm2/system/usrvol       Region   Data       253,11  10002432   LVM2
 lvm2/system/varvol       Region   Data       253,12  4997120    LVM2
 lvm2/system/Freespace    Region   Freespace  0,0     32768      LVM2
 lvm2/users/usersvol      Region   Data       253,14  42967040   LVM2
 lvm2/users/Freespace     Region   Freespace  0,0     16384      LVM2
 lvm2/linuxbox/system     Region   Data       253,23  62898176   LVM2
 lvm2/linuxbox/users2     Region   Data       253,24  62898176   LVM2
 lvm2/linuxbox/Freespace  Region   Freespace  0,0     0          LVM2
 lvm2/linuxbox/system     Region   Data       253,25  62898176   LVM2
 lvm2/linuxbox/users      Region   Data       253,26  62898176   LVM2
 lvm2/linuxbox/Freespace  Region   Freespace  0,0     0          LVM2