vfilepg - Display pages of an AdvFS file
/sbin/advfs/vfilepg domain_id fileset_id file_id [page |
-a] [-f d]
/sbin/advfs/vfilepg volume_id -b block
/sbin/advfs/vfilepg domain_id fileset_id file_id -d
dump_file
/sbin/advfs/vfilepg [-F] dump_file [page | -a] [-f d]
Specifies that all the pages in the file be displayed.
Specifies the logical block number of a disk block on an
AdvFS volume. Specifies the name of a file that contains
the output of this utility. Specifies that the output is
to be formatted in a directory hierarchy. The default, if
this option is not specified, is to format the output as a
hexadecimal and ASCII dump.
Specifies an AdvFS file domain using the following format:
By default, the utility opens all volumes using block
device special files. Specify the -r option to operate on
the raw device (character device special file) of the
domain instead of the block device. Specify the [-D]
option to force the utility to interpret the name you supply
in the domain argument as a domain name. Specifies an
AdvFS volume using the following format: Specify the -V
option to force the utility to interpret the name you supply
in the volume argument as a volume name. The volume
name argument also can be a full or partial path name, for
example /dev/disk/dsk12a or dsk12a. Specifying a partial
path name always opens the character device special file.
Alternatively, specify the volume by using arguments
for its domain, domain_id, and its volume
index number, volume_index. Specifies an AdvFS
fileset using the following format: Specify the
[-S] option to force the command to interpret the
name you supply as a fileset name. Specify the
fileset by entering either the name of the fileset,
fileset, or the fileset's tag number, -T fileset_tag.
Specifies a file name in the following
format: Specify the file by entering either the
file's fileset relative path name, file, or the
file's tag number, -t file_tag. Specifies the name
of a file that contains the output from this utility.
Specifies the file page number of a file.
The vfilepg utility formats, dumps, and displays AdvFS
file pages. A file page is the unit of disk storage for
AdvFS file: 8 Kbytes of contiguous disk space.
The utility has the following functions: Format and display
one file page or all the file pages of a file. The
file can be in a mounted or unmounted fileset. Save the
contents of a file in one fileset to a file in another
fileset. The file written is called a dump file. The
source file can be in a mounted or unmounted fileset; the
output fileset must be mounted. Format and display a dump
file that has been dumped using the utility. Format and
display a disk block of a file. A disk block is always
512 bytes and is located by specifying its logical block
number.
You can specify which file page is to be displayed (page
zero is the default), or you can display all the file
pages in a file. The default display of file page information
is in hexadecimal and ASCII formats. If you use the
-f d option, you can specify that the data be formatted as
a directory page as it is displayed.
The utility displays one 8 Kbyte file page unless you
specify the -b or -a options. The utility displays one
512-byte disk block when you use the -b option; all the
file pages when you use the -a option.
An active domain, which is a domain with one or more of
its filesets mounted, has all of its volumes opened using
block device special files. These devices cannot be
opened a second time without first being unmounted. However,
the character device special files for the volumes
can be opened more than once while still mounted.
It can be misleading to use this utility on a domain with
mounted filesets because the utility does not synchronize
its read requests with AdvFS file domain read and write
requests.
For example, the AdvFS can be writing to the disk as the
utility is reading from the disk. Therefore, when you run
the utility, metadata may not have been flushed in time
for the utility to read it and consecutive reads of the
same file page may return unpredictable or contradictory
results. [The domain is not harmed.]
To avoid this problem, unmount all the fileset in the
domain before using this utility.
The utility can fail to open a block device, even when
there are no filesets mounted for the domain and the AdvFS
daemon, advfsd is running. The daemon, as it runs, activates
the domain for a brief time. If the vfilepg utility
fails in this situation, run it again.
The utility returns a 0 (zero) on success, otherwise it
returns a nonzero value and an error diagnostic.
The following example displays an etc file in the root
fileset in the domain root_domain in the default format, a
hexadecimal and ASCII dump. [The output has been truncated
on the right in order to fit the display limitations
of the man command.]: # /sbin/advfs/vfilepg root_domain
root etc
======================================================================
DOMAIN "root_domain" VDI 1 (/dev/disk/dsk9a) lbn 8528
page 0
----------------------------------------------------------------------
000000 06 00 00 00 14 00 01 00 2e 00 00 00 06 00 00 00
.......... 000010 01 80 00 00 02 00 00 00 14 00 02 00
2e 2e 00 00 .......... 000020 02 00 00 00 01 80 00
00 72 00 00 00 18 00 05 00 ........r. 000030 66 73
74 61 62 00 00 00 72 00 00 00 01 80 00 00 fstab...r.
000040 85 00 00 00 20 00 0c 00 23 2e 6d 72 67 2e 2e 67
.... ...#. 000050 72 6f 75 70 00 00 00 00 85 00 00 00
01 80 00 00 roup...... 000060 87 00 00 00 20 00 0c
00 23 2e 6d 72 67 2e 2e 6d .... ...#. 000070 61 67
69 63 00 00 00 00 87 00 00 00 01 80 00 00 agic......
000080 88 00 00 00 20 00 0d 00 23 2e 6d 72 67 2e 2e 70
.... ...#. The following example displays an etc file in
directory format. [The output has been truncated on the
right in order to fit the display limitations of the man
command.]: # /sbin/advfs/vfilepg root_domain root etc -f d
======================================================================
DOMAIN "root_domain" VDI 1 (/dev/rdisk/dsk9a) lbn 8528
page 0
----------------------------------------------------------------------
tag name
6 .
2 ..
114 fstab
133 #.mrg..group
135 #.mrg..magic
136 #.mrg..passwd
137 #.mrg..rc.config
138 #.mrg..rpc
139 #.mrg..shells
140 #.mrg..sysconfigtab
1296 ddr.dbase
1297 disktab The following example displays page 2 of
the file my_file in fileset my_fileset of domain
my_domain. The output is displayed in hexadecimal and
ASCII text: # /sbin/advfs/vfilepg my_domain my_fileset
my_file 2 The following example displays page 2 of the
file my_file in fileset my_fileset of domain my_domain.
The output is displayed in directory format: #
/sbin/advfs/vfilepg my_domain my_fileset my_file 2 -f d
The following example displays disk block 47 on AdvFS volume
/dev/disk/dsk12C. The output is displayed in ASCII
text: # /sbin/advfs/vfilepg dsk12c -b 47 The following
example displays the first page (page zero) of the root
directory in the fileset my_fileset. The output is displayed
in directory format: # /sbin/advfs/vfilepg
my_domain my_fileset . -f d The following example dumps
the file located in the path a/b/c in fileset my_fileset
to a file named save_it in the default ASCII format. #
/sbin/advfs/vfilepg my_domain my_fileset a/b/c -d save_it
The following example displays page 2 of the saved file
save_it formatted as a directory: # /sbin/advfs/vfilepg
save_it 2 -f d
Specifies the command path. Contains links to the volumes
in the domain.
Commands: nvfragpg(8), nvlogpg(8), vsbmpg(8), nvtagpg(8),
tag2name(8)
vfilepg(8)
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