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syndicate-storage / syndicate-core

Scalable Software-define Storage System
Apache License 2.0
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Instruction failed: `syndicate-touch` #17

Closed ChunKunWang closed 7 years ago

ChunKunWang commented 7 years ago

The syndicate-touch instruction doesn't work. The drivers I used for RG and AG container: ./syndicate-fs-driver/src/sgfsdriver/ag_driver for AG container, and ./syndicate-core/python/syndicate/rg/drivers/disk for RG container. The detail error message is as follows.

log-touch.txt

iychoi commented 7 years ago

Would you check the MS's database for RG's gateway id? It seems that UG tried to connect to AG for some reasons but failed. This may be because MS returned AG's gateway ID instead of RG's. Your log says the /irods-file.txt already exists at a coordinator (gateway) 5062879461503535207. This must be RG's ID because you are creating a file. If it's AG's ID, it means AG already published the same file before in read-only. Thus, you can't overwrite the same path via RG.

ChunKunWang commented 7 years ago

I agree with you. I conduct another experiment to test whether syndicate-touch is able to create files that don't exist yet in the MS. The result shows that syndicate-touch is failed to touch DATA X-Update-Times of /irods-file.txt which already exists but succeed to update and create the DATA X-Update-Times of files that are uploaded from UG. Thanks for your help.