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Command Reference A-31
/etc/dumpdates may be edited to change any of the fields, if neces-
sary. See dumpdates for details.
b
factor
Set the tape blocking factor in k-bytes. The default is 63 KB. If the den-
sity is set to greater than 6250 BPI, then the default blocking factor is
32 KB. NOTE: Some systems support blocking factors greater than
63 KB by breaking requests into 63-KB chunks or smaller using variable
sized records; other systems do not support blocking factors greater
than 63 KB at all. When using large blocking factors, always check the
system(s) where the potential restore might occur to ensure that block-
ing factor specified in dump is supported. Local tape devices restrict
the blocking factor to less than, or equal to, 63 KB.
l Specifies that this is a multi-subtree dump. The directory that is the
common root of all the subtrees to be dumped must be specified as the
last argument. The subtrees are specified by path names relative to this
common root. The list of subtrees is provided from standard in, one
item on each line, with a blank line to terminate the list. (If you use this
option, you must also use option n .)
n Specifies the dumpname for a multi-subtree dump. Mandatory for multi-
subtree dumps.
Q Backs up all files and directories in qtree 0 of the specified volume.
Qtree 0 is a qtree that is not created by you with the qtree command. In
each volume, the files and directories that do not belong to a qtree you
create are considered to be in qtree 0. Follow the Q option with the path
name of a volume (for example, /vol/vol1 ).
X Specifies an exclude list, which is a comma-separated list of strings. If
the name of a file matches one of the strings, it is excluded from the
backup. The following list describes the rules for specifying the exclude
list:
The name of the file must match the string exactly.
An asterisk is considered a wildcard character.
The wildcard character must be the first or last character of the string.
Each string can contain up to two wildcard characters.
If you want to exclude files whose names contain a comma, precede
the comma in the string with a backslash.
You can specify up to 32 strings in the exclude list.
EXAMPLES
To make a level 0 dump of the entire file system to a remote tape device with
each tape file in the dump being less than 2 GB in size, use:
filer> dump 0ufbB adminhost:/dev/rst0 63 2097151 /
dump