В Tue, 31 Mar 2015 20:30:25 -0700 lyndat3@your-mail.com пишет:
After comment from one of the nfs client maintainers, the issue is simply one of config.
There are two *separate* syncs to consider -- at the server, and at the client.
'sync' on the EXPORT, and 'async' on the MOUNT is the sane approach;
sync on export should not be necessary - server must persist data when client explicitly requests it and as long as client does not request it, it probably does not care anyway. But I do not know if Linux NFS server does implement it correctly.
That config also appears to return the performance.
The many recommendations online to use 'sync' for data integrity are IIUC for sync on the server.
LT
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