=head1 NAME
-afsd - Initializes the Cache Manager and starts related daemons
+afsd, afsd.fuse - Initializes the Cache Manager and starts related daemons
=head1 SYNOPSIS
S<<< [B<-confdir> <I<configuration directory>>] >>>
S<<< [B<-daemons> <I<number of daemons to use>>] >>>
S<<< [B<-dcache> <I<number of dcache entries>>] >>> [B<-debug>]
- [B<-dynroot>] [B<-enable_peer_stats>] [B<-enable_process_stats>]
- [B<-fakestat>] [B<-fakestat-all>]
+ [B<-dynroot>] [B<-dynroot-sparse>] [B<-enable_peer_stats>]
+ [B<-enable_process_stats>] [B<-fakestat>] [B<-fakestat-all>]
S<<< [B<-files> <I<files in cache>>] >>>
S<<< [B<-files_per_subdir> <I<log(2) of files per dir>> ] >>>
[B<-help>] S<<< [B<-logfile> <I<Place to keep the CM log>>] >>>
The B<afsd> command initializes the Cache Manager on an AFS client machine
by transferring AFS-related configuration information into kernel memory
-and starting several daemons. More specifically, the B<afsd> command
-performs the following actions:
+and starting several daemons. B<afsd.fuse> is an experimental variant that
+initializes a FUSE-based Cache Manager instead of one based on a kernel
+module.
+
+The B<afsd> command performs the following actions:
=over 4
By default, the list of database server machines is transferred into the
kernel from the F</usr/vice/etc/CellServDB> file. Alternatively, when the
B<-afsdb> option is used, the list of database server machines is taken
-from the AFSDB DNS records for each cell. After initialization, use the
+from the DNS SRV or AFSDB records for each cell. After initialization, use the
B<fs newcell> command to change the kernel-resident list without having to
reboot.
data that the Cache Manager requests at a time from the File Server (how
much data per fetch RPC, since AFS uses partial file transfer).
-For a disk cache, a chunk is a F<VI<n>> file and this parameter
-sets the maximum size to which each one can expand; the default is 64
-KB. For a memory cache, each chunk is a collection of contiguous memory
-blocks; the default is size is 8 KB.
+For a disk cache, a chunk is a F<VI<n>> file and this parameter sets the
+maximum size to which each one can expand. For a memory cache, each chunk
+is a collection of contiguous memory blocks. The default for a disk cache
+is between 256 KB and 1 MB depending on the size of the cache. The default
+for a memory cache is 8 KB.
To override the default chunk size for either type of cache, use the
B<-chunksize> argument to provide an integer to be used as an exponent of
=item *
Sets the number of I<stat> entries available in machine memory for caching
-status information about cached AFS files. The default is 300; use the
-B<-stat> argument to override the default.
+status information about cached AFS files. The default is based on the
+size of the cache. Use the B<-stat> argument to override the default.
=item *
=back
+B<afsd.fuse> is a variant of B<afsd> that, instead of initializing a Cache
+Manager implemented as a kernel module, initializes a FUSE-based AFS
+client. FUSE (Filesystem in USErspace) is a Linux-only mechanism for
+providing a file system through a purely user-space daemon without a
+kernel module component. B<afsd.fuse> takes all of the same options as
+B<afsd>.
+
This command does not use the syntax conventions of the AFS command
suites. Provide the command name and all option names in full.
reserved 7006/udp (for future use)
bosserver 7007/udp
-Additionally, for B<klog> to work through the firewall you need to allow
+Clients will also need to be able to contact your Kerberos KDC to
+authenticate. If you are using B<kaserver> and B<klog>, you need to allow
inbound and outbound UDP on ports >1024 (probably 1024<port<2048 would
suffice depending on the number of simultaneous B<klog>s).
Be sure to set the UDP timeouts on the firewall to be at least twenty
minutes for the best callback performance.
+B<afsd.fuse> was first introduced in OpenAFS 1.5.74. It is only available
+if OpenAFS was built with the C<--enable-fuse-client> configure switch.
+It should be considered experimental.
+
=head1 OPTIONS
=over 4
=item B<-afsdb>
-Enable afsdb support. This will use DNS to lookup the AFSDB record and
+Enable afsdb support. This will use DNS to lookup the SRV or AFSDB records and
use that for the database servers for each cell instead of the values
in the F<CellServDB> file. This has the advantage of only needing to
-update one DNS record to reconfigure the AFS clients for a new
+update one set of DNS records to reconfigure the AFS clients for a new
database server as opposed to touching all of the clients, and also
allows one to access a cell without preconfiguring its database
-servers in F<CellServDB>. The format of AFSDB records is defined in
-RFC 1183.
+servers in F<CellServDB>. The format of SRV records is defined in
+RFC 5864, and the AFSDB record format is in RFC 1183.
=item B<-backuptree>
which provides equivalent functionality to the most commonly used symbolic
links.
+=item B<-dynroot-sparse>
+
+In addition to operating in the manner described for dynroot above,
+cells other than the local cell are not shown by default until a lookup
+occurs. Cell aliases as set in the CellAliases file are shown as normal,
+although they may appear to be dangling links until traversed.
+
=item B<-enable_peer_stats>
Activates the collection of Rx statistics and allocates memory for their
Finder program doesn't try to contact every AFS cell the system knows
about.
+Note that, for the purposes of B<-fakestat>, local cellular mounts count
+as "cross-cell" mounts. That is, if the local cell is C<localcell>, a
+mount for C<localcell:root.cell> will count as a "cross-cell" mount and
+so stat calls for it will be faked with B<-fakestat>. In practice, local
+cellular mounts are rare and generally discouraged, so this should not
+generally make a difference.
+
=item B<-fakestat-all>
Return fake values for stat calls on all mounts, not just cross-cell
=item B<-mem_alloc_sleep>
-Allows sleeps when allocating a memory cache.
+This option is obsolete and no longer has any effect.
=item B<-memcache>
L<CellServDB(5)>,
L<cacheinfo(5)>
-RFC 1183 L<http://www.faqs.org/rfcs/rfc1183.html>
+RFC 5864 L<http://www.ietf.org/rfc/rfc5864.txt>
+RFC 1183 L<http://www.ietf.org/rfc/rfc1183.txt>
=head1 COPYRIGHT
git://git.openafs.org / openafs.git / blobdiff