FreeBSD Bugzilla – Attachment 19240 Details for
Bug 34248
dump(8) man page block/record/other clarifications.
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[patch]
file.diff
file.diff (text/plain), 3.50 KB, created by
Gary W. Swearingen
on 2002-01-25 04:10:00 UTC
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Description:
file.diff
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MIME Type:
Creator:
Gary W. Swearingen
Created:
2002-01-25 04:10:00 UTC
Size:
3.50 KB
patch
obsolete
>--- /tmp/dump..orig.8 Thu Jan 24 15:32:29 2002 >+++ /tmp/dump.8 Thu Jan 24 19:58:28 2002 >@@ -53,7 +53,11 @@ > .Op Fl T Ar date > .Ar filesystem > .Nm >-.Op Fl W Li \&| Fl w >+.Fl W | Fl w >+.Pp >+.Nm rdump >+is an alternate name for >+.Nm . > .Pp > .in \" XXX > (The >@@ -83,17 +87,23 @@ > (such as some cartridge tape drives) > each volume is of a fixed size; > the actual size is determined by the tape size and density and/or >-block count options below. >+.Fl B >+options. > By default, the same output file name is used for each volume > after prompting the operator to change media. > .Pp >+The filesystem to be dumped is specified by the argument >+.Ar filesystem >+as either its device-special file or its mount point >+(if that is in a standard entry in /etc/fstab). >+.Pp > The following options are supported by > .Nm : > .Bl -tag -width Ds > .It Fl 0\-9 > Dump levels. > A level 0, full backup, >-guarantees the entire file system is copied >+guarantees the entire filesystem is copied > (but see also the > .Fl h > option below). >@@ -112,11 +122,15 @@ > drive with hardware compression (where you can never be sure about > the compression ratio). > .It Fl B Ar records >-The number of 1 KB blocks per volume. >+The number of kilobytes per output volume, except that if it is >+not an integer multiple of the output block size, >+the command uses the next smaller such multiple. > This option overrides the calculation of tape size > based on length and density. > .It Fl b Ar blocksize >-The number of kilobytes per dump record. >+The number of kilobytes per output block, except that if it is >+larger than 64, the command uses 64. (See the BUGS section.) >+The default block size is 10. > .It Fl c > Change the defaults for use with a cartridge tape drive, with a density > of 8000 bpi, and a length of 1700 feet. >@@ -240,7 +254,7 @@ > option may be used to change it. > .It Fl W > .Nm Dump >-tells the operator what file systems need to be dumped. >+tells the operator what filesystems need to be dumped. > This information is gleaned from the files > .Pa dumpdates > and >@@ -249,12 +263,12 @@ > .Fl W > option causes > .Nm >-to print out, for each file system in >+to print out, for each filesystem in > the > .Pa dumpdates > file > the most recent dump date and level, >-and highlights those file systems that should be dumped. >+and highlights those filesystems that should be dumped. > If the > .Fl W > option is set, all other options are ignored, and >@@ -345,8 +359,7 @@ > This should be done at set intervals, say once a month or once every two months, > and on a set of fresh tapes that is saved forever. > .It >-After a level 0, dumps of active file >-systems are taken on a daily basis, >+After a level 0, dumps of active filesystems are taken on a daily basis, > using a modified Tower of Hanoi algorithm, > with this sequence of dump levels: > .Bd -literal -offset indent >@@ -357,7 +370,7 @@ > for each day, used on a weekly basis. > Each week, a level 1 dump is taken, and > the daily Hanoi sequence repeats beginning with 3. >-For weekly dumps, another fixed set of tapes per dumped file system is >+For weekly dumps, another fixed set of tapes per dumped filesystem is > used, also on a cyclical basis. > .El > .Pp >@@ -380,7 +393,7 @@ > .Fl D > option) > .It Pa /etc/fstab >-dump table: file systems and frequency >+dump table: filesystems and frequency > .It Pa /etc/group > to find group > .Em operator >@@ -405,7 +418,7 @@ > Currently, > .Xr physio 9 > slices all requests into chunks of 64 KB. Therefore, it is >-impossible to use a larger tape blocksize, so >+impossible to use a larger output block size, so > .Nm > will prevent this from happening. > .Pp
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bug 34248
: 19240