cvs commit: src/sbin/mount_nfs mount_nfs.c

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxxxxx>]

dillon      2003/12/28 16:07:44 PST

DragonFly src repository

  Modified files:
    sbin/mount_nfs       mount_nfs.c 
  Log:
  Backgroundable NFS mounts can still cause a boot sequence to stall for
  several minutes or longer if DNS services are not available during boot.
  The stall time depends on the state of the network, DNS, ethernet and arp
  timeouts, and the number of backgroundable NFS mounts.
  
  Furthermore, temporary DNS failures caused NFS mounts (foreground or
  background) to permanently fail and exit, which will likely result in
  inconsistent system state after booting completes if DNS services or the
  network is down during boot.  This case is most likely to occur when
  multiple machines boot simultaniously after recovering from a power outage.
  
  Adjust foreground timeouts for 'bg' optioned NFS mounts to 1 second and reduce
  the retry sleep() from 60 seconds to 20 seconds.  60 seconds is ridiculously
  long even if you had a hundred machines with dozens of backgrounded nfs mounts
  all trying to mount at the same time.  Do not exit on temporary DNS
  failures, and if a warning is generated for an earlier failure generate
  another warning if the mount later succeeds rather then silence (which might
  be misinterpreted in the logs as the mount having failed).
  
  Revision  Changes    Path
  1.7       +92 -26    src/sbin/mount_nfs/mount_nfs.c


http://www.dragonflybsd.org/cvsweb/src/sbin/mount_nfs/mount_nfs.c.diff?r1=1.6&r2=1.7&f=h