If talking about the server side, this is a better topic for samba-technical mailing list. On the server smbd launches a new process for each new client which connects to it. On Thu, Feb 15, 2018 at 2:27 PM, Matthew DeLoera <mmdeloera@xxxxxxxxx> wrote: > Thanks Steve - that's exactly what I want to know. > > I'm also curious about the tgtd side. According to smbd's manpage, by > default there is no limit to the number of connections or smbd > processes. Will any number of incoming clients all be handled by a > single smbd process if the same credentials are used for all? Are > there any other criteria that inform the total number of smbd > processes? > > On Thu, Feb 15, 2018 at 2:00 PM, Steve French <smfrench@xxxxxxxxx> wrote: >> On Thu, Feb 15, 2018 at 11:58 AM, Matthew DeLoera <mmdeloera@xxxxxxxxx> wrote: >>> I'm sorry if this is a vague question, but I hope someone can correct >>> or affirm my understanding of smbfs socket behavior. >> >> presumably you mean cifs.ko (CIFS/SMB3 kernel driver for Linux). "smbfs" >> is the name of the Mac (not Linux) driver (there was a much older >> smbfs 20 years ago for Linux that predated cifs.ko) >> >> >>> I read in the mount.cifs manpage for the "port=" option that it will >>> use an existing connection to that port. So does this mean that >>> regardless of how many files might be concurrently open on a single >>> share, regardless how many processes are executing I/O requests, smbfs >>> multiplexes all associated I/O blocks through the same single TCP >>> connection? >> >> Unlike Windows (which will use multiple connections to the same ip >> address depending on what the server reports about its network >> adapter), cifs.ko will only establish one socket connection to each >> distinct ip address that it is mounted to. In the future, as SMB3 >> "multi-channel" support progresses, you will see cases where multiple >> connections are made for a mount from one client to one server >> (depending on what the server reports as its available adapters). >> >>> Is it a persistent connection for as long as the mount exists? (i.e. >>> I'm using an fstab entry) Granted I know how to use netstat, but >>> hoping someone might note something authoritative. >> >> The server can (and will if no open files) sometimes disconnect the socket >> (client reconnects automatically). In addition, if the server is unresponsive >> (does not respond to periodic SMB3 "echo" requests) the client will >> drop the connection and reconnect. >> >>> Can I infer that if I have 5 fstab entries to unique hosts, and mount >>> -a, I'll have 5 outbound TCP connections? >> >> Yes >> >> -- >> Thanks, >> >> Steve -- Thanks, Steve -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
