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services: dovecot: Allow to set 'process-limit'.

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* doc/guix.texi (Mail Services): Update accordingly.
* gnu/services/mail.scm (service-configuration)[process-limit]: New field.
(dovecot-configuration)[services]: Set 'process-limit' to its correct default
value.
This commit is contained in:
Clément Lassieur 2018-11-10 18:45:27 +01:00
parent 8d9bb4b4d0
commit be8dd4a5fe
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2 changed files with 23 additions and 3 deletions
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9
doc/guix.texi
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@ -14364,6 +14364,15 @@ Number of connections to handle before starting a new process.
Typically the only useful values are 0 (unlimited) or 1. 1 is more
secure, but 0 is faster. <doc/wiki/LoginProcess.txt>.
Defaults to @samp{1}.
@end deftypevr
@deftypevr {@code{service-configuration} parameter} non-negative-integer process-limit
Maximum number of processes that can exist for this service. If set to
0, @code{default-process-limit} is used instead.
Defaults to @samp{0}.
@end deftypevr
@deftypevr {@code{service-configuration} parameter} non-negative-integer process-min-avail

17
gnu/services/mail.scm
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@ -301,6 +301,10 @@ used instead.")
"Number of connections to handle before starting a new process.
Typically the only useful values are 0 (unlimited) or 1. 1 is more
secure, but 0 is faster. <doc/wiki/LoginProcess.txt>.")
(process-limit
(non-negative-integer 0)
"Maximum number of processes that can exist for this service. If set to 0,
@code{default-process-limit} is used instead.")
(process-min-avail
(non-negative-integer 0)
"Number of processes to always keep waiting for more connections.")
@ -482,6 +486,7 @@ complex, customize the address and port fields of the
(service-configuration
(kind "imap-login")
(client-limit 0)
(process-limit 0)
(listeners
(list
(inet-listener-configuration (protocol "imap") (port 143) (ssl? #f))
@ -495,14 +500,17 @@ complex, customize the address and port fields of the
(service-configuration
(kind "lmtp")
(client-limit 1)
(process-limit 0)
(listeners
(list (unix-listener-configuration (path "lmtp") (mode "0666")))))
(service-configuration
(kind "imap")
(client-limit 1))
(client-limit 1)
(process-limit 1024))
(service-configuration
(kind "pop3")
(client-limit 1))
(client-limit 1)
(process-limit 1024))
(service-configuration (kind "auth")
;; In what could be taken to be a bug, the default value of 1 for
;; service-count makes it so that a PAM auth worker can't fork off
@ -514,14 +522,17 @@ complex, customize the address and port fields of the
;; 30.
(service-count 30)
(client-limit 0)
(process-limit 1)
(listeners
(list (unix-listener-configuration (path "auth-userdb")))))
(service-configuration
(kind "auth-worker")
(client-limit 1))
(client-limit 1)
(process-limit 0))
(service-configuration
(kind "dict")
(client-limit 1)
(process-limit 0)
(listeners (list (unix-listener-configuration (path "dict")))))))
"List of services to enable. Available services include @samp{imap},
@samp{imap-login}, @samp{pop3}, @samp{pop3-login}, @samp{auth}, and