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Add two more options to raidctl: 

-p    check (and return) the status of the parity
  -P    check the status of the parity, and rebuild if necessary

Addresses PR#7494
This commit is contained in:
oster 1999-08-10 18:21:39 +00:00
parent a3aefdaee3
commit d0740fb357
2 changed files with 63 additions and 4 deletions
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30
sbin/raidctl/raidctl.8
View File

@ -1,4 +1,4 @@
.\" $NetBSD: raidctl.8,v 1.8 1999/03/24 06:18:30 mycroft Exp $
.\" $NetBSD: raidctl.8,v 1.9 1999/08/10 18:21:39 oster Exp $
.\"
.\" Copyright (c) 1998 The NetBSD Foundation, Inc.
.\" All rights reserved.
@ -86,6 +86,10 @@
.Nm ""
.Fl I Ar serial_number Ar dev
.Nm ""
.Fl p Ar dev
.Nm ""
.Fl P Ar dev
.Nm ""
.Fl r Ar component Ar dev
.Nm ""
.Fl R Ar component Ar dev
@ -162,6 +166,12 @@ is used as one of the keys in determining whether a
particular set of components belong to the same RAID set. While not
strictly enforced, different serial numbers should be used for
different RAID sets.
.It Fl p Ar dev
Check the status of the parity on the RAID set. Displays a status
message, and returns successfully if the parity is up-to-date.
.It Fl P Ar dev
Check the status of the parity on the RAID set, and initialize
(re-write) the parity if the parity is not known to be up-to-date.
.It Fl r Ar component Ar dev
Remove the spare disk specified by
.Ar component
@ -452,6 +462,24 @@ or
on the device or its filesystems, and then to mount the filesystems
for use.
.Pp
After the parity has been initialized for the first time, the command:
.Bd -unfilled -offset indent
raidctl -p raid0
.Ed
.Pp
can be used to check the current status of the parity. To check the
parity and rebuild it necessary the command:
.Bd -unfilled -offset indent
raidctl -P raid0
.Ed
.Pp
is used. Note that re-writing the parity can be done while
other operations on the RAID set are taking place (e.g. while doing a
.Xr fsck 8
on a filesystem on the RAID set). However: for maximum effectiveness
of the RAID set, the parity should be known to be correct before any
data on the set is modified.
.Pp
To see how the RAID set is doing, the following command can be used to
show the RAID set's status:
.Bd -unfilled -offset indent

37
sbin/raidctl/raidctl.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: raidctl.c,v 1.6 1999/03/02 03:13:59 oster Exp $ */
/* $NetBSD: raidctl.c,v 1.7 1999/08/10 18:21:39 oster Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
@ -95,6 +95,8 @@ main(argc,argv)
char name[PATH_MAX];
char component[PATH_MAX];
int do_recon;
int do_rewrite;
int is_clean;
int raidID;
int rawpart;
int recon_percent_done;
@ -106,9 +108,11 @@ main(argc,argv)
num_options = 0;
action = 0;
do_recon = 0;
do_rewrite = 0;
is_clean = 0;
force = 0;
while ((ch = getopt(argc, argv, "a:Bc:C:f:F:g:iI:l:r:R:sSu")) != -1)
while ((ch = getopt(argc, argv, "a:Bc:C:f:F:g:iI:l:r:R:sSpPu")) != -1)
switch(ch) {
case 'a':
action = RAIDFRAME_ADD_HOT_SPARE;
@ -180,6 +184,15 @@ main(argc,argv)
action = RAIDFRAME_CHECKRECON;
num_options++;
break;
case 'p':
action = RAIDFRAME_CHECK_PARITY;
num_options++;
break;
case 'P':
action = RAIDFRAME_CHECK_PARITY;
do_rewrite = 1;
num_options++;
break;
case 'u':
action = RAIDFRAME_SHUTDOWN;
num_options++;
@ -271,6 +284,25 @@ main(argc,argv)
case RAIDFRAME_REBUILD_IN_PLACE:
rebuild_in_place(fd,component);
break;
case RAIDFRAME_CHECK_PARITY:
do_ioctl(fd, RAIDFRAME_CHECK_PARITY, &is_clean,
"RAIDFRAME_CHECK_PARITY");
if (is_clean) {
printf("%s: Parity status: clean\n",dev_name);
} else {
printf("%s: Parity status: DIRTY\n",dev_name);
if (do_rewrite) {
printf("%s: Initiating re-write of parity\n",
dev_name);
do_ioctl(fd, RAIDFRAME_REWRITEPARITY, NULL,
"RAIDFRAME_REWRITEPARITY");
} else {
/* parity is wrong, and is not being fixed.
Exit w/ an error. */
exit(1);
}
}
break;
case RAIDFRAME_SHUTDOWN:
do_ioctl(fd, RAIDFRAME_SHUTDOWN, NULL, "RAIDFRAME_SHUTDOWN");
break;
@ -585,7 +617,6 @@ rebuild_in_place( fd, component )
"RAIDFRAME_REBUILD_IN_PLACE");
}
static void
usage()
{