I also wonder how many products actually exploit NFS async mode to improve I/O performance by sacrificing the file system consistency risk:
[email protected] wrote on 2018/10/17 22:26:52: > Using this option usually improves performance, but at > the cost that an unclean server restart (i.e. a crash) can cause > data to be lost or corrupted." For instance, NetApp, at the very least FAS 3220 running Data OnTap 8.1.2p4 7-mode which I tested with, would forcibly *promote* async mode to sync mode. Promoting means even if NFS client requests async mount mode, the NFS server ignores and allows only sync mount mode. Best Regards, --- Keigo Matsubara, Storage Solutions Client Technical Specialist, IBM Japan TEL: +81-50-3150-0595, T/L: 6205-0595
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