On (24/12/18 14:26), Joanne Koong wrote: > Introduce two new sysctls, "default_request_timeout" and > "max_request_timeout". These control how long (in seconds) a server can > take to reply to a request. If the server does not reply by the timeout, > then the connection will be aborted. The upper bound on these sysctl > values is U32_MAX. > > "default_request_timeout" sets the default timeout if no timeout is > specified by the fuse server on mount. 0 (default) indicates no default > timeout should be enforced. If the server did specify a timeout, then > default_request_timeout will be ignored. > > "max_request_timeout" sets the max amount of time the server may take to > reply to a request. 0 (default) indicates no maximum timeout. If > max_request_timeout is set and the fuse server attempts to set a > timeout greater than max_request_timeout, the system will use > max_request_timeout as the timeout. Similarly, if default_request_timeout > is greater than max_request_timeout, the system will use > max_request_timeout as the timeout. If the server does not request a > timeout and default_request_timeout is set to 0 but max_request_timeout > is set, then the timeout will be max_request_timeout. > > Please note that these timeouts are not 100% precise. The request may > take roughly an extra FUSE_TIMEOUT_TIMER_FREQ seconds beyond the set max > timeout due to how it's internally implemented. > > $ sysctl -a | grep fuse.default_request_timeout > fs.fuse.default_request_timeout = 0 > > $ echo 4294967296 | sudo tee /proc/sys/fs/fuse/default_request_timeout > tee: /proc/sys/fs/fuse/default_request_timeout: Invalid argument > > $ echo 4294967295 | sudo tee /proc/sys/fs/fuse/default_request_timeout > 4294967295 > > $ sysctl -a | grep fuse.default_request_timeout > fs.fuse.default_request_timeout = 4294967295 > > $ echo 0 | sudo tee /proc/sys/fs/fuse/default_request_timeout > 0 > > $ sysctl -a | grep fuse.default_request_timeout > fs.fuse.default_request_timeout = 0 > > Signed-off-by: Joanne Koong <joannelkoong@xxxxxxxxx> > Reviewed-by: Bernd Schubert <bschubert@xxxxxxx> > Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx> FWIW Reviewed-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
