volume manager group 最大disk限制

Cygnus

原帖由 junglelion 于 2006-1-25 16:46 发表
There is a limit to the number of objects (plex, subdisks, disks, etc.) in the
default private region length (even if you still have a lot of disk space in the disk
group).
The work around is to create another disk group and continue the creation of
volumes.

plex, subdisks, disks等的数量限制应该是和你初始化VXVM盘的私有区的大小有关。
VXVM盘的私有区的大小是可以自己定义的，太多没有实际的意义

Almost right.  But private region must be enlarged for some cases.
I designed some disk groups with 20000+ objects long long ago.  
Private region was an issue for those configuration.

Default private region is 1024k except nopriv for all vxvm versions.
But it is cylinder sized so that  private region is more than 1024k  if
private region is a  partition.

Actually, it's a little complex than you think for vxvm private and public region layout .
For example,   128k reserved for cds disk....

Please read vxvm documents and all scripts which will tell you what happened
during disk initiation.

原帖由 风之幻想 于 2006-1-25 17:51 发表
.. 但是一个卷只可以建立32个plex.(在3.2上.3.5没有实验过)

Yes, all vxvm version just support maximum 32 plexes for one volume.