From: fred.-enlever-ceci.fm@laposte.net.invalid   
      
   Hi all,   
   this is no mandriva system but busybox NAS.   
   But as it's a RAID problem, i ask here knowing that plenty of people   
   will be kind to help me ;-)   
      
   The problem is that volume groups have disapeared suddenly :   
   vgdisplay ==>  No volume groups found   
   lvdisplay ==>  No volume groups found   
   pvdisplay returns nothing   
      
      
   df -h gives :   
      
   /dev/md0                  2.1M      2.1M         0 100% /old   
   /dev/md0                197.4M     77.3M    110.0M  41% /   
   /dev/md2                  2.7T    120.6G      2.6T   4% /DataVolume   
   /dev/ram0                61.6M      5.5M     56.2M   9% /mnt/ram   
   /dev/md2                  2.7T    120.6G      2.6T   4% /shares/Download   
   /dev/md2                  2.7T    120.6G      2.6T   4% /shares/Public   
   ................list continued with all the other shares   
      
   ######### So DATAVOLUME is there !!! #############   
      
      
      
     mdadm -E /dev/sda4 returns :   
   /dev/sda4:   
              Magic : a92b4efc   
            Version : 0.90.00   
               UUID : c9d6f3c0:76a8d365:44bb6e8c:b20b82e6   
      Creation Time : Wed Jun 15 15:06:59 2011   
         Raid Level : raid5   
      Used Dev Size : 975146112 (929.97 GiB 998.55 GB)   
         Array Size : 2925438336 (2789.92 GiB 2995.65 GB)   
       Raid Devices : 4   
      Total Devices : 4   
   Preferred Minor : 2   
      
        Update Time : Mon Sep 10 11:20:44 2012   
              State : clean   
     Active Devices : 4   
   Working Devices : 4   
     Failed Devices : 0   
      Spare Devices : 0   
           Checksum : b8ee4d79 - correct   
             Events : 699490   
      
             Layout : left-symmetric   
         Chunk Size : 64K   
      
          Number   Major   Minor   RaidDevice State   
   this     3       8        4        3      active sync   /dev/sda4   
      
       0     0       8       52        0      active sync   /dev/sdd4   
       1     1       8       36        1      active sync   /dev/sdc4   
       2     2       8       20        2      active sync   /dev/sdb4   
       3     3       8        4        3      active sync   /dev/sda4   
      
   ######### So RAID5 seems clean #############"   
      
      
      
   BTW : i don't have the "datavolume doesn't exist" message, and   
   absolutely no error show in the logs.   
      
      
      
   do you think my RAID is still active ?   
      
   The NAS is in production in a professionnal environment and i would like   
   to solve the problem without having to reset to factory or reconstruct   
   the raid, the shares.....   
      
   Knowing that all the shares are still accessible via network, may i   
   safely try to reconstruct the VGs, LVs... ? Won't this rebuild the raid   
   (20 hours), forcing me to restore all my data after recreating all the   
   shares ?   
      
      
      
   Thanks a lot for your feed back.   
      
   Fred   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)