2011-03-30 13:49:47 +00:00
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.TH FS 8
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.SH NAME
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fs, exsort \- file server maintenance
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.SH SYNOPSIS
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.PD 0
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.B help
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[
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.I command ...
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]
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.PP
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.B allow
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2014-08-11 20:36:59 +00:00
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.RI [ uid ]
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2011-03-30 13:49:47 +00:00
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.PP
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.B arp
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.I subcommand
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.PP
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.B cfs
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.I filesystem
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.PP
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.B check
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.RI [ options ]
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.PP
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.B clean
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.I file
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[
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.I bno
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[
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.I addr
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] ]
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.PP
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.B clri
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.RI [ file ...]
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.PP
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.B cpu
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.RI [ proc ]
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.PP
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.B create
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.I path uid gid perm
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.RB [ lad ]
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.PP
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.B cwcmd
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.I subcommand
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.PP
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.B date
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.RB [[ +- ]
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.IR seconds ]
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.PP
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.B disallow
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.PP
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.B duallow
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.RI [ uid ]
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.PP
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.B dump
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[
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.I filesystem
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]
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.PP
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.B files
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.PP
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.B flag
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.I flag
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[
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.I channel
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]
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.PP
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.B fstat
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[
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.I files
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]
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.PP
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.B halt
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.PP
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.B hangup
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.I channel
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.PP
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.B newuser
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.I name
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.RI [ options ]
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.PP
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.B noattach
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.PP
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.B passwd
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.PP
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.B printconf
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.PP
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.B profile
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.RB [ 01 ]
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.PP
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.B remove
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.RI [ files ...]
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.PP
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.B route
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.I subcommand
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.PP
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.B "sntp kick"
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.PP
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.BR stat [ admiesw ]
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.PP
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.B stats
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.RB [[ - ]
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.IR flags ...]
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.PP
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.B sync
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.PP
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.B time
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.I command
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.PP
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.B trace
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.RI [ number ]
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.PP
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.B users
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.RI [ file ]
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.PP
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.B version
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.PP
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.B who
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.RI [ user ...]
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.PP
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.B wormeject
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[
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.I tunit
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]
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.PP
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.B wormingest
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[
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.I tunit
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]
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.PP
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.B wormoffline
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.I drive
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.PP
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.B wormonline
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.I drive
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.PP
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.B wormreset
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.PD
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.PP
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.B disk/exsort
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.RB [ -w ]
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.RI [ file ]
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.SH DESCRIPTION
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Except for
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.IR exsort ,
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these commands are available only on the console of an
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.IR fs (4)
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file server.
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.\" .PP
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.\" The console requires the machine's password to be supplied before
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.\" accepting commands. Typing a control-D will cause
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.\" the server to request
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.\" the password again.
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.PP
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.I Help
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prints a `usage string' for the named
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.IR commands ,
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by default all commands.
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Also, many commands print menus of their options if given
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incorrect or incomplete parameters.
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.PP
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.I Allow
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disables permission checking and allows
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2014-08-11 20:36:59 +00:00
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.BR wstat
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for the specified
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.I uid
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2014-08-10 23:00:55 +00:00
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or for any user if omitted.
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2011-03-30 13:49:47 +00:00
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This may help in initializing a file system.
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Use this with caution.
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.PP
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.I Arp
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has two
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.IR subcommands :
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.B print
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prints the contents of the ARP cache and
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.B flush
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flushes it.
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.PP
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.I Cfs
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changes the current file system, that is, the file tree to which
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commands
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.RB ( check ,
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.BR clean ,
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.BR clri ,
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.BR create ,
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.BR cwcmd ,
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.BR dump ,
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.BR newuser ,
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.BR profile ,
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.BR remove ,
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and
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.BR users )
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apply.
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The initial
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.I filesystem
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is
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.BR main .
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.PP
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.I Check
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verifies the consistency of the current file system.
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With no options it checks and reports the status.
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It suspends service while running.
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Options are:
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.TF touch
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.PD
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.TP
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.B rdall
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Read every block in the file system (can take a
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.I long
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time).
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Normally,
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.I check
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will stop short of the actual contents
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of a file and just verify the block addresses.
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.TP
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.B tag
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Fix bad
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.IR tags ;
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each block has a tag that acts as a backwards pointer for
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consistency checking.
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.TP
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.B ream
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Fix bad tags
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and also clear the contents
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of blocks that have bad tags.
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.TP
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.B pfile
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Print every file name.
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.TP
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.B pdir
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Print every directory name.
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.TP
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.B free
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Rebuild the list of free blocks
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with all blocks that are not referenced.
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This option is only useful on non-cache/WORM
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file systems.
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If the filesystem was modified, the summary printed
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at the conclusion of the check may not reflect the true
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state of the freelist and may also print a list of
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.I missing
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blocks.
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These
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.I missing
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blocks are actually on the free list and the true
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state of the filesystem can be determined by running
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.I check
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with no arguments.
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.TP
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.B bad
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Each block address that is out of range or duplicate is cleared.
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Note that only the second and subsequent
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use of a block is cleared.
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Often the problems in a file system are
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caused by one bad file that has a lot of
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garbage block addresses.
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In such a case,
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it is wiser to use
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.I check
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to find the bad file
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(by number of diagnostic messages)
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and then use
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.I clri
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to clear the addresses in that file.
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After that,
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.I check
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can be used to reclaim the free list.
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.TP
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.B touch
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Cause every directory and indirect block not on the current WORM disk
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to be advanced to the current WORM on the next dump.
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This is a discredited idea to try to keep operating
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on the knee of the cache working set.
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Buy more cache disk.
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.TP
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.B trim
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reduces the file system's
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.I fsize
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to fit the device containing the file system.
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This is useful after copying a partially-full file system
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into a slightly smaller device.
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Running
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.B "check free"
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afterward will construct a new free list that contains no
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blocks outside the new, smaller file system.
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2013-07-18 13:04:37 +00:00
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.TP
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.B rtmp
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Removes temporary files after a recovery from worm.
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After a cache ream and recover, temporary files and directories
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refer to invalid data blocks producing checktag errors
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on access. To get rid of these errors, the
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.I rtmp
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flag can be used with the
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.I check
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command which will truncate temporary directories
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and remove temporary files.
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2011-03-30 13:49:47 +00:00
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.PP
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.I Clean
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prints the block numbers in
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.IR file 's
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directory entry (direct, indirect and doubly indirect)
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and checks the tags of the blocks cited.
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If
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.I bno
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is supplied, the
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.IR bno 'th
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block number (using zero origin)
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is set to
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.I addr
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(defaults to zero).
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Note that only the block numbers in the directory entry itself
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are examined;
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.I clean
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does not recurse through indirect blocks.
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.PP
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.I Clri
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clears the internal directory entry and abandons storage
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associated with
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.IR files .
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It ignores the usual rules for sanity, such as checking against
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removing a non-empty directory.
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A subsequent
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.B check
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.B free
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will place the abandoned storage in the free list.
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.PP
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.I Cpu
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prints the CPU utilization and state of the processes in the file server.
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If the name of a process type argument is given,
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then CPU utilization for only those processes is printed.
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.PP
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.I Create
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creates a file on the current file system.
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.I Uid
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and
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.I gid
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are names or numbers from
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.BR /adm/users .
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.I Perm
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is the low 9 bits of the permission mode of the file, in octal.
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An optional final
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.BR l ,
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.BR a ,
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or
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.BR d
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creates a locked file, append-only file, or directory.
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.PP
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.I Cwcmd
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controls the cached WORM file systems,
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specifically the current file system.
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The subcommands are:
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.TP
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.BI mvstate " state1 state2 " [ platter ]
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States are
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.BR none ,
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.BR dirty ,
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.BR dump ,
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.BR dump1 ,
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.BR error ,
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.BR read ,
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and
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.BR write .
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A
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.B mvstate
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.B dump1
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.B dump
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will cause I/O errors in the last dump to be retried.
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A
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.B mvstate
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.B dump1
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.B write
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will cause I/O errors in the last dump to be retried in
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reallocated slots in the next dump.
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A
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.B mvstate
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.B read
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.B none
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will flush the cache associated with the WORM.
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A
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.B mvstate
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.B dump
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.B write
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aborts the background process dumping to WORM; as a consequence it
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leaves holes in the dump file system.
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Other uses are possible but arcane.
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The optional
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.I platter
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limits affected blocks to those on that platter.
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.TP
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.BR prchain " [\fIstart\fP] [\fIback-flag\fP]
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Print the chain of superblocks for the directory containing the
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roots of the dumped file systems, starting at block number
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.I start
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(default 0) going forward (backwards if
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.I back-flag
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is supplied and is non-zero).
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.TP
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.BR searchtag " [\fIstart\fP] [\fItag\fP] [\fIblocks\fP]
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Reads the WORM device starting at block
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.I start
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and proceeding for
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.I blocks
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blocks (default 1000)
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until it finds a block with numeric tag
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.IR tag .
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.TP
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.BR savecache " [\fIpercent\fP]
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Copy the block numbers, in native endian longwords, of blocks in the
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.B read
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state to the file
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.BR /adm/cache
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for use by
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.BR disk/exsort .
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If an argument is given,
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then that percent (most recently used) of each cache bucket
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is copied.
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.TP
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.BR loadcache " [\fIdskno\fP]
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Read
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.B /adm/cache
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and for every block there on WORM disk side
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.I dskno
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(zero-origin),
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read the block from WORM to the cache.
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If
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.I dskno
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is not supplied, all blocks in
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.B /adm/cache
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are read.
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.TP
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|
|
|
.BR morecache " dskno [\fIcount\fP]
|
|
|
|
Read
|
|
|
|
.I count
|
|
|
|
blocks from the beginning of WORM disk side
|
|
|
|
.I dskno
|
|
|
|
to the cache.
|
|
|
|
If no count is given,
|
|
|
|
read all of side
|
|
|
|
.IR dskno
|
|
|
|
into the cache.
|
|
|
|
.TP
|
|
|
|
.BR startdump \ [ 01 ]
|
|
|
|
Suspend
|
|
|
|
.RB ( 0 )
|
|
|
|
or restart
|
|
|
|
.RB ( 1 )
|
|
|
|
the background dump process.
|
|
|
|
.TP
|
|
|
|
.B touchsb
|
|
|
|
Verify that the superblock on the WORM is readable, ignoring the cached copy.
|
|
|
|
.TP
|
|
|
|
.BR blockcmp " [\fIwbno\fP] [\fIcbno\fP]
|
|
|
|
Compares the WORM block
|
|
|
|
.I wbno
|
|
|
|
with the cache block
|
|
|
|
.I cbno
|
|
|
|
and prints the first 10 differences, if any.
|
|
|
|
.TP
|
|
|
|
.B acct
|
|
|
|
Prints how many times each user has caused the system to allocate new space on the WORM;
|
|
|
|
the units are megabytes.
|
|
|
|
.TP
|
|
|
|
.B clearacct
|
|
|
|
Clears the accounting records for
|
|
|
|
.BR acct .
|
|
|
|
.PP
|
|
|
|
.I Date
|
|
|
|
prints the current date. It may be adjusted
|
|
|
|
using
|
|
|
|
.BI +- seconds\f1.
|
|
|
|
With no sign, it sets the date to the absolute number of seconds
|
|
|
|
since 00:00 Jan 1, 1970 GMT; with a sign it trims the current
|
|
|
|
time.
|
|
|
|
.PP
|
|
|
|
.I Disallow
|
|
|
|
restores permission checking back to normal after a file system
|
|
|
|
has been initialized.
|
|
|
|
.PP
|
|
|
|
.I Duallow
|
|
|
|
sets permissions such that
|
|
|
|
the named
|
|
|
|
.I user
|
|
|
|
can read and search any directories.
|
|
|
|
This is the permission necessary to do a
|
|
|
|
.IR du (1)
|
|
|
|
command anywhere in the file system to discover disk usage.
|
|
|
|
.PP
|
|
|
|
.I Dump
|
|
|
|
starts a dump to WORM immediately for
|
|
|
|
the named filesystem,
|
|
|
|
or the current filesystem if none is named.
|
|
|
|
File service is suspended while the cache is scanned;
|
|
|
|
service resumes when the copy to WORM starts.
|
|
|
|
.PP
|
|
|
|
.I Files
|
|
|
|
prints for every connection the number of allocated fids.
|
|
|
|
.PP
|
|
|
|
.I Fstat
|
|
|
|
prints the current status of each named
|
|
|
|
.IR file ,
|
|
|
|
including uid, gid, wuid (uid of the last user to modify the file),
|
|
|
|
size, qid, and disk addresses.
|
|
|
|
.PP
|
|
|
|
.I Flag
|
|
|
|
toggles flags, initially all off:
|
|
|
|
.TF authdisablexx
|
|
|
|
.TP
|
|
|
|
.B allchans
|
|
|
|
Print channels in
|
|
|
|
.I who
|
|
|
|
output.
|
|
|
|
.TP
|
|
|
|
.B arp
|
|
|
|
Report ARP activity.
|
|
|
|
.TP
|
|
|
|
.B attach
|
|
|
|
Report as connections are made to the file server.
|
|
|
|
.TP
|
|
|
|
.B authdebug
|
|
|
|
Report authentications.
|
|
|
|
.TP
|
|
|
|
.B authdisable
|
|
|
|
Disable authentication.
|
|
|
|
.TP
|
|
|
|
.B chat
|
|
|
|
(Very noisy.) Print all 9P messages to and from the server.
|
|
|
|
.TP
|
|
|
|
.B error
|
|
|
|
Report 9P errors.
|
|
|
|
.TP
|
|
|
|
.B il
|
|
|
|
Report IL errors.
|
|
|
|
.TP
|
|
|
|
.B route
|
|
|
|
Report received RIP packets.
|
|
|
|
.TP
|
|
|
|
.B ro
|
|
|
|
Report I/O on the WORM device.
|
|
|
|
.TP
|
|
|
|
.B sntp
|
|
|
|
Report SNTP activity.
|
|
|
|
.PD
|
|
|
|
.PP
|
|
|
|
If given a second numeric
|
|
|
|
.I channel
|
|
|
|
argument,
|
|
|
|
as reported by
|
|
|
|
.IR who ,
|
|
|
|
the flag is altered only on that connection.
|
|
|
|
.PP
|
|
|
|
.I Halt
|
|
|
|
does a
|
|
|
|
.B sync
|
|
|
|
and halts the machine, returning to the boot ROM.
|
|
|
|
.PP
|
|
|
|
.I Hangup
|
|
|
|
clunks all the fids on the named
|
|
|
|
.IR channel ,
|
|
|
|
which has the same format as in the output of the
|
|
|
|
.I who
|
|
|
|
command.
|
|
|
|
.PP
|
|
|
|
.I Newuser
|
|
|
|
requires a
|
|
|
|
.I name
|
|
|
|
argument.
|
|
|
|
With no options it adds user
|
|
|
|
.IR name ,
|
|
|
|
with group leader
|
|
|
|
.IR name ,
|
|
|
|
to
|
|
|
|
.B /adm/users
|
|
|
|
and makes the directory
|
|
|
|
.BI /usr/ name
|
|
|
|
owned by user and group
|
|
|
|
.IR name .
|
|
|
|
The options are
|
|
|
|
.TF =leaderxx
|
|
|
|
.TP
|
|
|
|
.B ?
|
|
|
|
Print the entry for
|
|
|
|
.IR name .
|
|
|
|
.TP
|
|
|
|
.B :
|
|
|
|
Add a group: add the name to
|
|
|
|
.B /adm/users
|
|
|
|
but don't create the directory.
|
|
|
|
By convention, groups are numbered starting from 10000, users from 0.
|
|
|
|
.TP
|
|
|
|
.I newname
|
|
|
|
Rename existing user
|
|
|
|
.I name
|
|
|
|
to
|
|
|
|
.IR newname .
|
|
|
|
.TP
|
|
|
|
.BI = leader
|
|
|
|
Change the leader of
|
|
|
|
.I name
|
|
|
|
to
|
|
|
|
.IR leader .
|
|
|
|
If
|
|
|
|
.I leader
|
|
|
|
is missing, remove the existing leader.
|
|
|
|
.TP
|
|
|
|
.BI + member
|
|
|
|
Add
|
|
|
|
.I member
|
|
|
|
to the member list of
|
|
|
|
.IR name .
|
|
|
|
.TP
|
|
|
|
.BI - member
|
|
|
|
Remove existing
|
|
|
|
.I member
|
|
|
|
from the member list of
|
|
|
|
.IR name .
|
|
|
|
.PD
|
|
|
|
.PP
|
|
|
|
After a successful
|
|
|
|
.I newuser
|
|
|
|
command the file server overwrites
|
|
|
|
.B /adm/users
|
|
|
|
to reflect the internal state of the user table.
|
|
|
|
.PP
|
|
|
|
.I Noattach
|
|
|
|
disables
|
|
|
|
.IR attach (5)
|
|
|
|
messages, in particular for system maintenance.
|
|
|
|
Previously attached connections are unaffected.
|
|
|
|
Another
|
|
|
|
.I noattach
|
|
|
|
will enable normal behavior.
|
|
|
|
.PP
|
|
|
|
.I Passwd
|
|
|
|
sets the machine's password and writes it in non-volatile RAM.
|
|
|
|
.PP
|
|
|
|
.I Printconf
|
|
|
|
prints the system configuration information.
|
|
|
|
.PP
|
|
|
|
.I Profile
|
|
|
|
.B 1
|
|
|
|
clears the profiling buffer and enables profiling;
|
|
|
|
.I profile
|
|
|
|
.B 0
|
|
|
|
stops profiling and writes the data to
|
|
|
|
.B /adm/kprofdata
|
|
|
|
for use by
|
|
|
|
.B kprof
|
|
|
|
(see
|
|
|
|
.IR prof (1)).
|
|
|
|
If a number is not specified, the profiling state toggles.
|
|
|
|
.PP
|
|
|
|
.I Remove
|
|
|
|
removes
|
|
|
|
.IR files .
|
|
|
|
.PP
|
|
|
|
.I Route
|
|
|
|
maintains an IP routing table. The
|
|
|
|
.I subcommands
|
|
|
|
are:
|
|
|
|
.TF "add dest gate mask"
|
|
|
|
.TP
|
|
|
|
.B add \f2dest gate \fP[\f2mask\fP]
|
|
|
|
Add a static route from IP address
|
|
|
|
.I dest
|
|
|
|
using gateway
|
|
|
|
.I gate
|
|
|
|
with an optional subnet
|
|
|
|
.IR mask .
|
|
|
|
.TP
|
|
|
|
.B delete \f2dest\fP
|
|
|
|
Delete an entry from the routing table.
|
|
|
|
.TP
|
|
|
|
.B print
|
|
|
|
Display the contents of the routing table.
|
|
|
|
.TP
|
|
|
|
.B ripon
|
|
|
|
Enables the table to be filled from RIP packets.
|
|
|
|
.TP
|
|
|
|
.B ripoff
|
|
|
|
Disables the table from being updated by RIP packets.
|
|
|
|
.PD
|
|
|
|
.PP
|
|
|
|
.I Sntp
|
|
|
|
.I kick
|
|
|
|
queries the SNTP server
|
|
|
|
(see
|
|
|
|
.IR fsconfig (8))
|
|
|
|
and sets the time with its response.
|
|
|
|
.PP
|
|
|
|
The
|
|
|
|
.I stat
|
|
|
|
commands are connected with a service or device identified by the
|
|
|
|
last character of the name:
|
|
|
|
.BR d ,
|
|
|
|
SCSI targets;
|
|
|
|
.BR e ,
|
|
|
|
Ethernet controllers;
|
|
|
|
.BR i ,
|
|
|
|
IDE/ATA targets;
|
|
|
|
.BR m ,
|
|
|
|
Marvell SATA targets;
|
|
|
|
.BR w ,
|
|
|
|
cached WORM.
|
|
|
|
The
|
|
|
|
.I stata
|
|
|
|
command prints overall statistics about the file system.
|
|
|
|
The
|
|
|
|
.I stats
|
|
|
|
command takes an optional argument identifying the characters
|
|
|
|
of
|
|
|
|
.I stat
|
|
|
|
commands to run. The option is remembered and becomes the
|
|
|
|
default for subsequent
|
|
|
|
.I stats
|
|
|
|
commands if it begins with a minus sign.
|
|
|
|
.PP
|
|
|
|
.I Sync
|
|
|
|
writes dirty blocks in memory to the magnetic disk cache.
|
|
|
|
.PP
|
|
|
|
.I Time
|
|
|
|
reports the time required to execute the
|
|
|
|
.IR command .
|
|
|
|
.PP
|
|
|
|
.I Trace
|
|
|
|
with no options prints the set of queue-locks held by each process in
|
|
|
|
the file server. If things are quiescent, there should be no output.
|
|
|
|
With an argument
|
|
|
|
.I number
|
|
|
|
it prints a stack traceback of that process.
|
|
|
|
.PP
|
|
|
|
.I Users
|
|
|
|
uses the contents of
|
|
|
|
.I file
|
|
|
|
(default
|
|
|
|
.BR /adm/users )
|
|
|
|
to initialize the file server's internal representation of the users
|
|
|
|
structure.
|
|
|
|
Incorrectly formatted entries in
|
|
|
|
.I file
|
|
|
|
will be ignored.
|
|
|
|
If file is explicitly
|
|
|
|
.BR default ,
|
|
|
|
the system builds a minimal functional users table internally;
|
|
|
|
this can help recover from disasters.
|
|
|
|
If the
|
|
|
|
.I file
|
|
|
|
cannot be read, you
|
|
|
|
.I must
|
|
|
|
run
|
|
|
|
.IP
|
|
|
|
.EX
|
|
|
|
users default
|
|
|
|
.EE
|
|
|
|
.PP
|
|
|
|
for the system to function. The
|
|
|
|
.B default
|
|
|
|
table looks like this:
|
|
|
|
.IP
|
|
|
|
.EX
|
|
|
|
-1:adm:adm:
|
|
|
|
0:none:adm:
|
|
|
|
1:tor:tor:
|
|
|
|
10000:sys::
|
|
|
|
10001:map:map:
|
|
|
|
10002:doc::
|
|
|
|
10003:upas:upas:
|
|
|
|
10004:font::
|
|
|
|
10005:bootes:bootes:
|
|
|
|
.EE
|
|
|
|
.PP
|
|
|
|
.I Version
|
|
|
|
reports when the file server was last compiled and last rebooted.
|
|
|
|
.PP
|
|
|
|
.I Who
|
|
|
|
reports, one per line, the names of users connected to the file server and the
|
|
|
|
status of their connections.
|
|
|
|
The first number printed on each line is the channel number of the connection.
|
|
|
|
If
|
|
|
|
.I users
|
|
|
|
are given the output selects connections owned by those users.
|
|
|
|
.PP
|
|
|
|
.I Wormeject
|
|
|
|
moves the WORM disk in slot
|
|
|
|
.I tunit
|
|
|
|
of the first jukebox to the output shelf.
|
|
|
|
.PP
|
|
|
|
.I Wormingest
|
|
|
|
moves the WORM disk from the input shelf of the first jukebox to slot
|
|
|
|
.IR tunit .
|
|
|
|
.PP
|
|
|
|
.I Wormoffline
|
|
|
|
takes
|
|
|
|
.I drive
|
|
|
|
of the first jukebox out of service;
|
|
|
|
.I wormonline
|
|
|
|
puts it back in service.
|
|
|
|
.PP
|
|
|
|
.I Wormreset
|
|
|
|
put discs back where the jukebox thinks they belong,
|
|
|
|
and does this for all jukeboxes.
|
|
|
|
.PP
|
|
|
|
When the file server boots, it prints the message
|
|
|
|
.IP
|
|
|
|
.EX
|
|
|
|
for config mode hit a key within 5 seconds
|
|
|
|
.EE
|
|
|
|
.PP
|
|
|
|
If a character is typed within 5 seconds of the message appearing,
|
|
|
|
the server will enter config mode.
|
|
|
|
See
|
|
|
|
.IR fsconfig (8)
|
|
|
|
for the commands available in config mode.
|
|
|
|
The system also enters config mode if, at boot time,
|
|
|
|
the non-volatile RAM does not appear to contain a valid configuration.
|
|
|
|
.PP
|
|
|
|
.I Exsort
|
|
|
|
is a regular command to be run on a CPU server, not on the file server
|
|
|
|
console.
|
|
|
|
It reads the named
|
|
|
|
.I file
|
|
|
|
(default
|
|
|
|
.BR /adm/cache )
|
|
|
|
and sorts the cache disk block numbers contained therein.
|
|
|
|
It assumes the numbers are 4-byte integers and guesses the
|
|
|
|
endianness by looking at the data.
|
|
|
|
It then prints statistics about the cache.
|
|
|
|
With option
|
|
|
|
.B -w
|
|
|
|
it writes the sorted data back to
|
|
|
|
.IR file .
|
|
|
|
.SH SEE ALSO
|
|
|
|
.IR fs (4)
|
|
|
|
.br
|
|
|
|
Ken Thompson,
|
|
|
|
``The Plan 9 File Server''.
|
|
|
|
.SH SOURCE
|
|
|
|
.B /sys/src/fs
|
|
|
|
.br
|
|
|
|
.B /sys/src/cmd/disk/exsort.c
|
|
|
|
.SH BUGS
|
|
|
|
The
|
|
|
|
.B worm*
|
|
|
|
commands should accept an argument identifying a jukebox.
|