3 dafileserver - Initializes the File Server component of the dafs process
10 =include fragments/dafileserver-synopsis.pod
17 The B<dafileserver> command initializes the File Server component of the
18 C<dafs> process. In the conventional configuration, its binary file is
19 located in the F</usr/afs/bin> directory on a file server machine.
21 The B<dafileserver> command is not normally issued at the command shell
22 prompt, but rather placed into a database server machine's
23 F</usr/afs/local/BosConfig> file with the B<bos create> command. If it is
24 ever issued at the command shell prompt, the issuer must be logged onto a
25 file server machine as the local superuser C<root>.
27 =include fragments/fileserver-description.pod
31 =include fragments/fileserver-cautions.pod
35 =include fragments/fileserver-options.pod
37 =item B<-fs-state-dont-save>
39 When present, fileserver state will not be saved during shutdown. Default
42 =item B<-fs-state-dont-restore>
44 When present, fileserver state will not be restored during startup.
45 Default is to restore state on startup.
47 =item B<-fs-state-verify> (none | save | restore | both)
49 This argument controls the behavior of the state verification mechanism.
50 A value of C<none> turns off all verification. A value of C<save> only
51 performs the verification steps prior to saving state to disk. A value
52 of C<restore> only performs the verification steps after restoring state
53 from disk. A value of C<both> performs all verifications steps both
54 prior to save and following a restore.
56 The default is C<both>.
58 =item B<-vhashsize <I<size>>
60 The log(2) number of of volume hash buckets. Default is 8 (i.e., by
61 default, there are 2^8 = 256 volume hash buckets). The minimum that can
62 be specified is 6 (64 hash buckets). In OpenAFS 1.5.77 and earlier, the
63 maximum that can be specified is 14 (16384 buckets). After 1.5.77, the
64 maximum that can be specified is 28 (268435456 buckets).
66 =item B<-vlruthresh <I<minutes>>
68 The number of minutes of inactivity before a volume is eligible for soft
69 detachment. Default is 120 minutes.
71 =item B<-vlruinterval <I<seconds>>
73 The number of seconds between VLRU candidate queue scan. The default is
76 =item B<-vlrumax <I<positive integer>>
78 The maximum number of volumes which can be soft detached in a single pass
79 of the scanner. Default is 8 volumes.
81 =item B<-unsafe-nosalvage>
83 This option causes the fileserver to bypass the normal safety check when
84 attaching volumes that checks the inUse field in the volume header. With
85 this option, volumes that were in use at the time of an unclean shutdown
86 will not be salvaged immediately the next time they are accessed, and thus
87 risk (possibly silent and/or irrevocable) corruption. Volumes will still
88 be salvaged when an internal inconsistency is detected or other cases
89 where a salvage would normally occur.
91 Due to the increased risk of data corruption, the use of this flag is
92 strongly discouraged. Only use it if you really know what you are doing.
98 The following B<bos create> command creates a dafs process on
99 the file server machine C<fs2.example.com> that uses the large configuration
100 size, and allows volumes to exceed their quota by 10%. Type the command on
103 % bos create -server fs2.example.com -instance dafs -type dafs \
104 -cmd "/usr/afs/bin/dafileserver -pctspare 10 -L" \
105 /usr/afs/bin/davolserver \
106 /usr/afs/bin/salvageserver \
107 /usr/afs/bin/dasalvager
109 =head1 TROUBLESHOOTING
111 =include fragments/fileserver-troubleshooting.pod
113 =head1 PRIVILEGE REQUIRED
115 =include fragments/fileserver-privilege.pod
119 =include fragments/fileserver-also.pod
124 =include fragments/fileserver-copyright.pod