Hi,
fscache is being considered to be deployed with NFS 3 server in a
metadata rich environment (millions of small files, with very low rate
of file data change). At present actimeo=600 is used with NFS mount
options (without fscache), to cache file attributes. I am not clear on
1. How FSCache handles meta data caching?
2. Does FSCache consider actimeo values before making a request to server?
3. When FSCache has to do metadata lookup from server, does it check
local cache first and then server lookup is performed?
need some definitive answer. Nearest that i could find anything is:
http://kerneltrap.org/Linux/Local_Caching_For_Network_Filesystems
http://linux-nfs.org/pipermail/nfsv4/2006-August/004844.html (for NFS v4)
http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/fscachelimitnfs.html
Ultimate goal is to reduce metadata lookup load from the NFS server. Any
clarity/ pointers/ help will be highly appreciated.
Thanks in advance.
Regards
Amit
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