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Old 03.08.2008., 14:00   #17
LVM mirroring na GNU/Linuxu

Kad sam procital da LVM mirroring na GNU/Linuxu ne dela kak spada, prvo sam pomislil da je to greska. I nije mi vrag dal mira, isel sam kopati po dokumentaciji. I stvarno, vidi vraga, naletim na ovo:

Quote:
http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/sysadmin-guide/s1-lvm-diskdruid-manual.html kaže:
The /boot/ partition cannot reside on an LVM volume group because the GRUB boot loader cannot read it.
Dok je na HP-UXu mirrorirani LVM /boot (/stand na HP-UXu) bez problema moguc:
Kod:
[root@host][/]> df -P
Filesystem           512-blocks  Used  Available Capacity Mounted on
/dev/vg00/lvol1       538064   182912   355152    34%   /stand
/dev/vg00/lvol3       61563312 12542448 49020864    21%   /
[root@host][/]> vgdisplay -v /dev/vg00
--- Volume groups ---
VG Name                     /dev/vg00
VG Write Access             read/write     
VG Status                   available                 
Max LV                      255    
Cur LV                      3      
Open LV                     3      
Max PV                      16     
Cur PV                      2      
Act PV                      2      
Max PE per PV               4350         
VGDA                        4   
PE Size (Mbytes)            8               
Total PE                    8680    
Alloc PE                    8680    
Free PE                     0       
Total PVG                   0        
Total Spare PVs             0              
Total Spare PVs in use      0                     

   --- Logical volumes ---
   LV Name                     /dev/vg00/lvol1
   LV Status                   available/syncd           
   LV Size (Mbytes)            304             
   Current LE                  38        
   Allocated PE                76          
   Used PV                     2       

   LV Name                     /dev/vg00/lvol2
   LV Status                   available/syncd           
   LV Size (Mbytes)            4168            
   Current LE                  521       
   Allocated PE                1042        
   Used PV                     2       

   LV Name                     /dev/vg00/lvol3
   LV Status                   available/syncd           
   LV Size (Mbytes)            30248           
   Current LE                  3781      
   Allocated PE                7562        
   Used PV                     2       


   --- Physical volumes ---
   PV Name                     /dev/dsk/c3t6d0
   PV Status                   available                
   Total PE                    4340    
   Free PE                     0       
   Autoswitch                  On        

   PV Name                     /dev/dsk/c3t5d0
   PV Status                   available                
   Total PE                    4340    
   Free PE                     0       
   Autoswitch                  On

        
[root@host][/]> uname -a
HP-UX host B.11.23 U 9000/785 2011915233 unlimited-user license
Eto. Sad znate jos jedan od razloga zakaj preferiram pravi UNIX, te zakaj ne volim GNU/Linux. Nikad nis u tom operativnom sustavu nije implementirano kak spada, sve napola i "nedopeceno".
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