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Bartlby 1.3.1 (Default branch)
04-17-2008
Bartlby is a network and system monitor,completely written in C, to provide a scalableframework with the ability to monitor networks ofvarious sizes. It consists of a core daemon,several plugins, and a Web GUI (PHP extension).The core daemon checks (over active/passive TCP)services/hosts and notifies users in case ofcritical service conditions (mail, SMS, ICQ, andcustom triggers are supported). Bartlby providesan open plugin interface to give everyadministrator an easy to use option to extend theplugin base, and a fully customizable GUI (writtenin PHP using a C extension). Nearby everything can be controlled via an XML interface.License: GNU General Public License (GPL)Changes:|
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lockd(8c) lockd(8c) Name lockd - network lock daemon Syntax /usr/etc/lockd [ -t timeout ] [ -g graceperiod ] Description The daemon processes lock requests that are either sent locally by the kernel or remotely by another lock daemon. The NFS locking service makes this advisory locking support possible by using the system call and the subroutine. The daemon forwards lock requests for remote data to the server site's lock daemon. The daemon then requests the status monitor daemon, for monitor service. The reply to the lock request is not sent to the kernel until the status daemon and the server site's lock daemon have replied. If either the status monitor or server site's lock daemon is unavailable, the reply to a lock request for remote data is delayed until all daemons become available. When a server recovers, it waits for a grace period for all client site daemons to submit reclaim requests. Client site daemons are noti- fied by of the server recovery and promptly resubmit previously granted lock requests. If a client site's daemon fails to secure previ- ously granted locks at the server site, the daemon sends the signal SIGLOST to all the processes that were previously holding locks and cannot reclaim them. Options -t timeout The daemon uses timeout (in seconds) as the interval instead of the default value of 15 seconds to retransmit a lock request to the remote server. -g graceperiod The daemon uses graceperiod (in seconds) as the grace period duration instead of the default value of 45 seconds. See Also fcntl(2), lockf(3), signal(3), statd(8c) lockd(8c)