[Gluster-users] replica position

[yang.bin18 at zte.com.cn]

<<<<<<<<example: brick A ,brick B,brick C compose one volume 

<<<<<<<<When client(fuse) in brick A write data into volume,for some 
reason ,we want the data  wrote into brick B or brick C. 
<<<<<<<When a write is performed from a fuse mount, the response will not 
come until the write happens on A, B, C. Order of the bricks does not 
matter.
 
Pranith 

<<<<<<If the  volume is configured to has only one replica or the volume 
is a DHT one? 
<<<<<Then the bricks are not in replication. Do you want to change the 
position of the bricks? 
       Pranith
 
<<<<For simplification,let`s suppose it being a DHT volume with three 
bricks,there is no replica.When client(fuse) in brick A write data into 
volume,for some reason ,we want the data  wrote into brick B or brick C. 
<<<If it is DHT volume, then the data of the files will be residing either 
in brick A, B, or C based on the hash of the filename and layout of the 
directory not on all of the bricks A, B, C. Only the directories are 
created on all the bricks A, B, C.

Pranith 
<<For  safty thinking ,we  want the data will be directed to any brick 
except brick A.
      <It depends on the hash the filename generates. It may very well end 
up on brick-A. What is the usecase you want to address?
Pranith
       We have some data in one disk of node (brick A),and want to put the 
backup of the data into glusterfs. 


发件人:         Pranith Kumar Karampuri <pkarampu at redhat.com> 
收件人:         yang.bin18 at zte.com.cn, gluster-users at gluster.org, 
日期:         2015/01/28 16:40 
主题:        Re: [Gluster-users] replica position 




On 01/27/2015 02:43 PM, yang.bin18 at zte.com.cn wrote: 

Hi, 

Can the replica position be configured ? 
Could you give an example?

Pranith 

Regards. 

Bin.Yang 









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