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Update description of checkparity and rebuildparity commands.

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This commit is contained in:
Greg Lehey 2000-06-07 04:15:40 +00:00
parent 86ed226506
commit 2550d2afdc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=61358
1 changed files with 57 additions and 5 deletions
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sbin/vinum/vinum.8
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@ -55,9 +55,10 @@
.in +1i
Attach a plex to a volume, or a subdisk to a plex.
.in
.Cd checkparity Ar plex
.Cd checkparity Ar plex Op Fl f
.Op Fl v
.in +1i
Check the parity blocks of a RAID-5 plex.
Check the parity blocks of a RAID-4 or RAID-5 plex.
.in
.Nm concat
.Op Fl f
@ -227,9 +228,11 @@ XXX
Move all the subdisks from the specified drive onto the new drive.
.in
..
.Cd rebuildparity Ar plex
.Cd rebuildparity Ar plex Op Fl f
.Op Fl v
.Op Fl V
.in +1i
Rebuild the parity blocks of a RAID-5 plex.
Rebuild the parity blocks of a RAID-4 or RAID-5 plex.
.in
.Cd resetconfig
.in +1i
@ -468,6 +471,27 @@ multiplied by the stripe size. For example, in a plex of block size 256k, the
first subdisk will have offset 0, the second offset 256k, the third 512k, etc.
This calculation ignores parity blocks in RAID-5 plexes.
.El
.It Nm checkparity
.Ar plex
.Op Fl f
.Op Fl v
.Pp
Check the parity blocks on the specified RAID-4 or RAID-5 plex. This operation
maintains a pointer in the plex, so it can be stopped and later restarted from
the same position if desired. In addition, this pointer is used by the
.Nm rebuildparity
command, so rebuilding the parity blocks need only start at the location where
the first parity problem has been detected.
.Pp
If the
.Fl f
flag is specified,
.Nm checkparity
starts checking at the beginning of the plex. If the
.Fl v
flag is specified,
.Nm checkparity
prints a running progress report.
.It Nm concat
.Op Fl f
.Op Fl n Ar name
@ -1041,6 +1065,34 @@ and
.Nm saveconfig
commands. Reset bit 4 of the daemon options mask to re-enable configuration
saves.
.It Nm rebuildparity
.Ar plex
.Op Fl f
.Op Fl v
.Op Fl V
.Pp
Rebuild the parity blocks on the specified RAID-4 or RAID-5 plex. This
operation maintains a pointer in the plex, so it can be stopped and later
restarted from the same position if desired. In addition, this pointer is used
by the
.Nm checkparity
command, so rebuilding the parity blocks need only start at the location where
the first parity problem has been detected.
.Pp
If the
.Fl f
flag is specified,
.Nm rebuildparity
starts rebuilding at the beginning of the plex. If the
.Fl v
flag is specified,
.Nm rebuildparity
first checks the existing parity blocks prints information about those found to
be incorrect before rebuilding. If the
.Fl V
flag is specified,
.Nm rebuildparity
prints a running progress report.
.It Nm rename
.Op Fl r
.Ar [ drive | subdisk | plex | volume ]
@ -1288,7 +1340,7 @@ example, if you are performing this operation in a script), use the
option.
.Pp
Copying data doesn't just take a long time, it can also place a significant load
on the system. You can specify the transfer size in bytes with the
on the system. You can specify the transfer size in bytes or sectors with the
.Fl S
option, and an interval (in milliseconds) to wait between copying each block with
the