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<tt>Geo-replication uses rsync with --inplace option to retain same
GFID. Rsync will not allow to use both -S and --inplace option. <br>
<br>
Tar+SSH mode is sparse aware. (gluster volume geo-replication
<MASTER> <SLAVEHOST>::<SLAVEVOL> config use_tarssh
True)<br>
<br>
</tt>
<pre class="moz-signature" cols="72">regards
Aravinda</pre>
<div class="moz-cite-prefix">On 08/08/2016 05:35 PM, Wei-Ming Lin
wrote:<br>
</div>
<blockquote
cite="mid:CAM49+sOJyBqKXihA9VG1HNcFKCohnT956gsQD1x9PYzsAL4Zog@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>HI ALL, </div>
<div><br>
</div>
<div>I create a geo-rep between two volumes, detail as follow: </div>
<div><br>
</div>
<div>SRC volume info: </div>
<div><br>
</div>
<div>
<div>Volume Name: ivan</div>
<div>Type: Disperse</div>
<div>Volume ID: 6c4a1a7c-0516-47c4-a298-dabf00dd268c</div>
<div>Status: Started</div>
<div>Number of Bricks: 1 x (2 + 1) = 3</div>
<div>Transport-type: tcp</div>
<div>Bricks:</div>
<div>Brick1: giting4:/export/ivan1</div>
<div>Brick2: giting5:/export/ivan1</div>
<div>Brick3: giting6:/export/ivan1</div>
<div>Options Reconfigured:</div>
<div>changelog.changelog: on</div>
<div>geo-replication.ignore-pid-check: on</div>
<div>geo-replication.indexing: on</div>
<div>performance.readdir-ahead: on</div>
</div>
<div><br>
</div>
<div>TAR volume info:</div>
<div><br>
</div>
<div>
<div>Volume Name: tar</div>
<div>Type: Disperse</div>
<div>Volume ID: e5147094-bd19-4b41-ae12-f6b84a89a18b</div>
<div>Status: Started</div>
<div>Number of Bricks: 1 x (2 + 1) = 3</div>
<div>Transport-type: tcp</div>
<div>Bricks:</div>
<div>Brick1: giting1:/export/ec1/fs</div>
<div>Brick2: giting2:/export/ec1/fs</div>
<div>Brick3: giting3:/export/ec1/fs</div>
<div>Options Reconfigured:</div>
<div>performance.readdir-ahead: on</div>
<div>cluster.enable-shared-storage: enable</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div>RR status: </div>
<div>[root@giting4 ivan]# gluster volume geo-replication ivan
giting1::tar status</div>
<div><br>
</div>
<div>MASTER NODE MASTER VOL MASTER BRICK SLAVE USER
SLAVE SLAVE NODE STATUS CRAWL STATUS
LAST_SYNCED</div>
<div>------------------------------------------------------------------------------------------------------------------------------------------</div>
<div>giting4 ivan /export/ivan1 root
giting1::tar giting3 Active Changelog Crawl
2016-08-09 01:14:11</div>
<div>giting6 ivan /export/ivan1 root
giting1::tar giting1 Passive N/A
N/A</div>
<div>giting5 ivan /export/ivan1 root
giting1::tar giting2 Passive N/A
N/A</div>
<div><br>
</div>
<div>and when I use cmd :</div>
<div><br>
</div>
<div>
<div># dd if=/dev/zero of=/mnt/ivan/10G_seek_file bs=1M
count=0 seek=10240</div>
</div>
<div><br>
</div>
<div>to generate a empty file with 10G size at mount point of
ivan (source volume),</div>
<div><br>
</div>
<div>because "count=0", this file will not cost real capacity, </div>
<div><br>
</div>
<div># du 10G_seek_file -h will get : </div>
<div><br>
</div>
<div>
<div>8.0K 10G_seek_file</div>
</div>
<div><br>
</div>
<div>and I also expect that target volume will have
10G_seek_file that do not cost capacity.</div>
<div><br>
</div>
<div>but when I check mount point of tar (target volume),</div>
<div><br>
</div>
<div>geo-replication happened, </div>
<div><br>
</div>
<div>but 10G_seek_file in target volume does cost capacity.</div>
<div><br>
</div>
<div># du 10G_seek_file -h will get : </div>
<div><br>
</div>
<div>10G 10G_seek_file. </div>
<div><br>
</div>
<div>I know that geo-rep in gluster using rsync, </div>
<div><br>
</div>
<div>so I using rsync to test the same geo-rep,</div>
<div><br>
</div>
<div>found that if I do rsync with "-S" option, </div>
<div><br>
</div>
<div>file in target volume will not cost capacity as source
volume. </div>
<div><br>
</div>
<div>So, is this a bug? </div>
<div><br>
</div>
<div>or is there any configure in gluster can handle this? </div>
<div><br>
</div>
<div>thanks.</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
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<br>
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</blockquote>
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