SlideShare a Scribd company logo
TLUG Meeting 2008/09/13 Gosuke Miyashita
My company ,[object Object],[object Object],[object Object],[object Object]
My goal of a scalable storage system ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Technologies
cman ,[object Object],[object Object],[object Object],[object Object],[object Object]
CLVM ,[object Object],[object Object],[object Object],[object Object]
CLVM clvmd distributes metadata among cluster nodes Logical volumes presented to each cluster node Logical volume on shared storage LVM2 Metadata clvmd LVM2 Metadata clvmd LVM2 Metadata clvmd
GNBD ,[object Object],[object Object],[object Object],[object Object]
GNBD TCP/IP network GNBD client GNBD client GNBD client GNBD Server Exported block device
GFS2 ,[object Object],[object Object],[object Object],[object Object],[object Object]
GFS2 These nodes can access to the GFS2 file system simultaneously GNBD Server GFS2 GNBD client cman GNBD client cman GNBD client cman
DRBD ,[object Object],[object Object],[object Object],[object Object]
DRBD Replication Server Block Device Server Block Device
DM-MP ,[object Object],[object Object],[object Object]
DM-MP with SAN storage /dev/sda1 /dev/sdb1 Seen as one device /dev/mapper/mpath0 active/passive or active/active Node HBA1 HBA2 SAN swtich 1 SAN swtich 2 Storage CNTRLR1 CNTRLR2
 
A scalable storage system /dev/VG0/LV0 (CLVM) mount /dev/VG0/LV0 /mnt cman GNBD cman GNBD GNBD Server GFS2 GNBD Server GFS2 Replication (DRBD) /dev/mapper/mpath0 (DM-MP) /dev/gnbd0 /dev/gnbd1 GNBD Server GFS2 GNBD Server GFS2 Replication (DRBD) /dev/mapper/mpath1 (DM-MP) /dev/gnbd2 /dev/gnbd3
How to extend /dev/VG0/LV0 (CLVM) mount /dev/VG0/LV0 /mnt cman GNBD cman GNBD GNBD Server GFS2 GNBD Server GFS2 /dev/mapper/mpath0 /dev/gnbd0 /dev/gnbd1 GNBD Server GFS2 GNBD Server GFS2 /dev/mapper/mpath1 /dev/gnbd2 /dev/gnbd3 GNBD Server GFS2 GNBD Server GFS2 /dev/mapper/mpath2 /dev/gnbd4 /dev/gnbd5
 
I wonder ... ,[object Object],[object Object],[object Object],[object Object],[object Object]
 

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How To Build A Scalable Storage System with OSS at TLUG Meeting 2008/09/13

  • 1. TLUG Meeting 2008/09/13 Gosuke Miyashita
  • 2.
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  • 7.
  • 8. CLVM clvmd distributes metadata among cluster nodes Logical volumes presented to each cluster node Logical volume on shared storage LVM2 Metadata clvmd LVM2 Metadata clvmd LVM2 Metadata clvmd
  • 9.
  • 10. GNBD TCP/IP network GNBD client GNBD client GNBD client GNBD Server Exported block device
  • 11.
  • 12. GFS2 These nodes can access to the GFS2 file system simultaneously GNBD Server GFS2 GNBD client cman GNBD client cman GNBD client cman
  • 13.
  • 14. DRBD Replication Server Block Device Server Block Device
  • 15.
  • 16. DM-MP with SAN storage /dev/sda1 /dev/sdb1 Seen as one device /dev/mapper/mpath0 active/passive or active/active Node HBA1 HBA2 SAN swtich 1 SAN swtich 2 Storage CNTRLR1 CNTRLR2
  • 17.  
  • 18. A scalable storage system /dev/VG0/LV0 (CLVM) mount /dev/VG0/LV0 /mnt cman GNBD cman GNBD GNBD Server GFS2 GNBD Server GFS2 Replication (DRBD) /dev/mapper/mpath0 (DM-MP) /dev/gnbd0 /dev/gnbd1 GNBD Server GFS2 GNBD Server GFS2 Replication (DRBD) /dev/mapper/mpath1 (DM-MP) /dev/gnbd2 /dev/gnbd3
  • 19. How to extend /dev/VG0/LV0 (CLVM) mount /dev/VG0/LV0 /mnt cman GNBD cman GNBD GNBD Server GFS2 GNBD Server GFS2 /dev/mapper/mpath0 /dev/gnbd0 /dev/gnbd1 GNBD Server GFS2 GNBD Server GFS2 /dev/mapper/mpath1 /dev/gnbd2 /dev/gnbd3 GNBD Server GFS2 GNBD Server GFS2 /dev/mapper/mpath2 /dev/gnbd4 /dev/gnbd5
  • 20.  
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  • 22.