Stalepid

Jul 20, 2023

Check for stale pid files and remove them

The stalepid utility was developed to facilitate the startup of servers that write their process ID to a file and refuse to start if that file exists e.g. when the process was last terminated by an unclean shutdown, or simply killed without given the chance to clean up the process ID file. The stalepid utility is used to check for and possibly remove those stale process ID files. Upon its invocation, stalepid checks for the following conditions

  • the file specified by the pidfile argument exists;
  • it contains a single line, and the line contains a single number;
  • there is no process with the process ID specified in the file, or if there is one, it is not named processname.

If all those conditions are met, the stalepid utility will remove the file specified by the pidfile argument, thus allowing the next invocation of the server to proceed normally.



Checkout these related ports:
  • Zxfer - Easily and reliably transfer ZFS filesystems
  • Ztop - Display ZFS dataset I/O in real time
  • Zsm - ZFS Snapshot Manager
  • Zsd - Destroys ZFS snapshots
  • Zrepl - ZFS dataset replication tool
  • Zrep - ZFS based replication and failover solution
  • Zpool-iostat-viz - ZFS pool I/O latency statistics
  • Zoxide - Fast cd alternative that learns your habits
  • Zogftw - Creates redundant backups on encrypted ZFS pools
  • Znapzend - ZFS-centric backup tool
  • Zisofs-tools - User utilities for zisofs
  • Zidrav - File corruption detection and repair program
  • Zfstools - OpenSolaris-compatible auto snapshotting for ZFS
  • Zfsnap2 - Portable performant script to make rolling ZFS snapshots easy
  • Zfsnap - Simple sh script to make zfs rolling snaphosts with cron