Hi,
Despite reading documentation, I could not figure out all the details about "repositories" used to snapshot/restore indices from/to elasticsearch.
I configured a single snapshot/restore folder location for my E/S cluster thanks to path.repo field in .yml conf file : I put following line in the conf file :
path.repo: ["/myfolder/elasticsearch-backup"]
Then, I created a repository using following API:
PUT /_snapshot/snapshot_repo_one
{
"type": "fs",
"settings": {
"compress" : true,
"location": "/myfolder/elasticsearch-backup"
}
}
I create two snapshots in this repository:
PUT /_snapshot/snapshot_repo_one/snapshot-number-one?wait_for_completion=false
PUT /_snapshot/snapshot_repo_one/snapshot-number-two?wait_for_completion=false
Great, I am able to list these snapshots for the repository:
GET /_snapshot/snapshot_repo_one/_all
=> returns my 2 snapshots (snapshot-number-one & snapshot-number-two) 
Though, I tried to create a second repository in the same (single configured) location:
PUT /_snapshot/snapshot_repo_two
{
"type": "fs",
"settings": {
"compress" : true,
"location": "/myfolder/elasticsearch-backup"
}
}
I didn't create any snapshot in this new repository, but when I try to list the snapshots from this one, I get the same list as the previous one (snapshot-number-one & snapshot-number-two) ...
GET /_snapshot/snapshot_repo_two/_all
Do you know why ? what did I miss about repositories & locations in the documentation ?
Thanks for your help
Sebastien