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freebsd-dev/sbin/vinum/list.c
Greg Lehey 48f14420c5 Finally implement read policies. The previous "implementation" didn't 
work because it referred to plexes which were almost invariably when
referred to.  Instead, deprecate the "prefer" keyword for volumes
(though it's still there for the moment) and add a keyword "preferred"
to the plex definition.  The relationship is like this:

Old:

  vol foo ... prefer foo.p3

New:

  plex foo.p3 volume foo preferred

printconfig: Print out the "preferred" keyword for plexes where
	     appropriate.

	     Still print out "prefer" for volumes.  The kernel module
	     continues to accept this version, but it's probably not
	     going to live much longer.
2003-05-05 05:25:49 +00:00

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/* list.c: vinum interface program, list routines
*/
/*-
* Copyright (c) 1997, 1998
* Nan Yang Computer Services Limited. All rights reserved.
*
* Parts copyright (c) 1997, 1998 Cybernet Corporation, NetMAX project.
*
* Written by Greg Lehey
*
* This software is distributed under the so-called ``Berkeley
* License'':
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Nan Yang Computer
* Services Limited.
* 4. Neither the name of the Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* This software is provided ``as is'', and any express or implied
* warranties, including, but not limited to, the implied warranties of
* merchantability and fitness for a particular purpose are disclaimed.
* In no event shall the company or contributors be liable for any
* direct, indirect, incidental, special, exemplary, or consequential
* damages (including, but not limited to, procurement of substitute
* goods or services; loss of use, data, or profits; or business
* interruption) however caused and on any theory of liability, whether
* in contract, strict liability, or tort (including negligence or
* otherwise) arising in any way out of the use of this software, even if
* advised of the possibility of such damage.
*
* $Id: list.c,v 1.32 2003/04/28 06:19:06 grog Exp $
* $FreeBSD$
*/
#include "vext.h"
#include <sys/utsname.h>
#include <dev/vinum/request.h>
#include <devstat.h>
/*
* When a subdisk is reviving or initializing, we
* check to see whether it is still progressing
* and print a warning if not. We check every 50
* ms, up to a maximum of 5 seconds. This is the
* counter value.
*/
#define STALLCOUNT 100
/*
* Take a size in sectors and return a pointer to
* a string which represents the size best. If lj
* is != 0, return left justified, otherwise in a
* fixed 10 character field suitable for columnar
* printing.
*
* Note this uses a static string: it's only
* intended to be used immediately for printing.
*/
char *
roughlength(int64_t bytes, int lj)
{
static char description[16];
if (bytes > (int64_t) MEGABYTE * 10000) /* gigabytes */
sprintf(description, lj ? "%lld GB" : "%10d GB", bytes / GIGABYTE);
else if (bytes > KILOBYTE * 10000) /* megabytes */
sprintf(description, lj ? "%lld MB" : "%10d MB", bytes / MEGABYTE);
else if (bytes > 10000) /* kilobytes */
sprintf(description, lj ? "%lld kB" : "%10d kB", bytes / KILOBYTE);
else /* bytes */
sprintf(description, lj ? "%lld B" : "%10d B", bytes);
return description;
}
void
vinum_list(int argc, char *argv[], char *argv0[])
{
int object;
int i;
enum objecttype type;
if (sflag & (!vflag)) /* just summary stats, */
printf("Object\t\t Reads\t\tBytes\tAverage\tRecover\t Writes"
"\t\tBytes\tAverage\t Mblock Mstripe\n\n");
if (argc == 0)
listconfig(); /* list everything */
else {
for (i = 0; i < argc; i++) {
object = find_object(argv[i], &type); /* look for it */
if (vinum_li(object, type))
fprintf(stderr, "Can't find object: %s\n", argv[i]);
}
}
}
/* List an object */
int
vinum_li(int object, enum objecttype type)
{
switch (type) {
case drive_object:
vinum_ldi(object, recurse);
break;
case sd_object:
vinum_lsi(object, recurse);
break;
case plex_object:
vinum_lpi(object, recurse);
break;
case volume_object:
vinum_lvi(object, recurse);
break;
default:
return -1;
}
return 0;
}
void
vinum_ldi(int driveno, int recurse)
{
time_t t; /* because Bruce says so */
int sdno; /* for recursion */
get_drive_info(&drive, driveno);
if (drive.state != drive_unallocated) {
if (vflag) {
printf("Drive %s:\tDevice %s\n",
drive.label.name,
drive.devicename);
t = drive.label.date_of_birth.tv_sec;
printf("\t\tCreated on %s at %s",
drive.label.sysname,
ctime(&t));
t = drive.label.last_update.tv_sec;
printf("\t\tConfig last updated %s", /* care: \n at end */
ctime(&t));
printf("\t\tSize: %16lld bytes (%lld MB)\n\t\tUsed: %16lld bytes (%lld MB)\n"
"\t\tAvailable: %11qd bytes (%d MB)\n",
(long long) drive.label.drive_size, /* bytes used */
(long long) (drive.label.drive_size / MEGABYTE),
(long long) (drive.label.drive_size - drive.sectors_available
* DEV_BSIZE),
(long long) (drive.label.drive_size - drive.sectors_available
* DEV_BSIZE) / MEGABYTE,
(long long) drive.sectors_available * DEV_BSIZE,
(int) (drive.sectors_available * DEV_BSIZE / MEGABYTE));
printf("\t\tState: %s\n", drive_state(drive.state));
if (drive.lasterror != 0)
printf("\t\tLast error: %s\n", strerror(drive.lasterror));
else
printf("\t\tLast error: none\n");
printf("\t\tActive requests:\t%d\n\t\tMaximum active:\t\t%d\n",
drive.active,
drive.maxactive);
if (Verbose) { /* print the free list */
int fe; /* freelist entry */
struct drive_freelist freelist;
struct ferq { /* request to pass to ioctl */
int driveno;
int fe;
} *ferq = (struct ferq *) &freelist;
printf("\t\tFree list contains %d entries:\n\t\t Offset\t Size\n",
drive.freelist_entries);
for (fe = 0; fe < drive.freelist_entries; fe++) {
ferq->driveno = drive.driveno;
ferq->fe = fe;
if (ioctl(superdev, VINUM_GETFREELIST, &freelist) < 0) {
fprintf(stderr,
"Can't get free list element %d: %s\n",
fe,
strerror(errno));
longjmp(command_fail, -1);
}
printf("\t\t%9lld\t%9lld\n",
(long long) freelist.offset,
(long long) freelist.sectors);
}
}
} else if (!sflag) {
printf("D %-21s State: %s\t%s\tA: %lld/%lld MB",
drive.label.name,
drive_state(drive.state),
drive.devicename,
(long long) drive.sectors_available * DEV_BSIZE / MEGABYTE,
(long long) (drive.label.drive_size / MEGABYTE));
if (drive.label.drive_size != 0)
printf(" (%d%%)",
(int) ((drive.sectors_available * 100 * DEV_BSIZE)
/ (drive.label.drive_size - (DATASTART * DEV_BSIZE))));
}
if (sflag) {
if (vflag || Verbose) {
printf("\t\tReads: \t%16lld\n\t\tBytes read:\t%16lld (%s)\n",
(long long) drive.reads,
(long long) drive.bytes_read,
roughlength(drive.bytes_read, 1));
if (drive.reads != 0)
printf("\t\tAverage read:\t%16lld bytes\n",
(long long) drive.bytes_read / drive.reads);
printf("\t\tWrites: \t%16lld\n\t\tBytes written:\t%16lld (%s)\n",
(long long) drive.writes,
(long long) drive.bytes_written,
roughlength(drive.bytes_written, 1));
if (drive.writes != 0)
printf("\t\tAverage write:\t%16lld bytes\n",
(long long) (drive.bytes_written / drive.writes));
} else { /* non-verbose stats */
printf("%-15s\t%7lld\t%15lld\t",
drive.label.name,
(long long) drive.reads,
(long long) drive.bytes_read);
if (drive.reads != 0)
printf("%7lld\t\t",
(long long) (drive.bytes_read / drive.reads));
else
printf("\t\t");
printf("%7lld\t%15lld\t",
(long long) drive.writes,
(long long) drive.bytes_written);
if (drive.writes != 0)
printf("%7lld",
(long long) (drive.bytes_written / drive.writes));
}
}
if (recurse) {
printf("\n");
for (sdno = 0; sdno < vinum_conf.subdisks_allocated; sdno++) {
get_sd_info(&sd, sdno);
if ((sd.state != sd_unallocated)
&& (sd.driveno == drive.driveno))
vinum_lsi(sd.sdno, 0);
}
}
printf("\n");
}
}
void
vinum_ld(int argc, char *argv[], char *argv0[])
{
int i;
int driveno;
enum objecttype type;
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
if (argc == 0) {
for (driveno = 0; driveno < vinum_conf.drives_allocated; driveno++)
vinum_ldi(driveno, recurse);
} else {
for (i = 0; i < argc; i++) {
driveno = find_object(argv[i], &type);
if (type == drive_object)
vinum_ldi(driveno, recurse);
else
fprintf(stderr, "%s is not a drive\n", argv[i]);
}
}
}
void
vinum_lvi(int volno, int recurse)
{
get_volume_info(&vol, volno);
if (vol.state != volume_unallocated) {
if (vflag) {
printf("Volume %s:\tSize: %lld bytes (%lld MB)\n"
"\t\tState: %s\n\t\tFlags: %s%s%s\n",
vol.name,
((long long) vol.size) * DEV_BSIZE,
((long long) vol.size) * DEV_BSIZE / MEGABYTE,
volume_state(vol.state),
vol.flags & VF_OPEN ? "open " : "",
(vol.flags & VF_WRITETHROUGH ? "writethrough " : ""),
(vol.flags & VF_RAW ? "raw" : ""));
printf("\t\t%d plexes\n\t\tRead policy: ", vol.plexes);
if (vol.preferred_plex < 0) /* round robin */
printf("round robin\n");
else {
get_plex_info(&plex, vol.plex[vol.preferred_plex]);
printf("plex %d (%s)\n", vol.preferred_plex, plex.name);
}
} else if (!sflag) /* brief */
printf("V %-21s State: %s\tPlexes: %7d\tSize: %s\n",
vol.name,
volume_state(vol.state),
vol.plexes,
roughlength(vol.size << DEV_BSHIFT, 0));
if (sflag) {
if (vflag || Verbose) {
printf("\t\tReads: \t%16lld\n\t\tRecovered:\t%16lld\n\t\tBytes read:\t%16lld (%s)\n",
(long long) vol.reads,
(long long) vol.recovered_reads,
(long long) vol.bytes_read,
roughlength(vol.bytes_read, 1));
if (vol.reads != 0)
printf("\t\tAverage read:\t%16lld bytes\n",
(long long) (vol.bytes_read / vol.reads));
printf("\t\tWrites: \t%16lld\n\t\tBytes written:\t%16lld (%s)\n",
(long long) vol.writes,
(long long) vol.bytes_written,
roughlength(vol.bytes_written, 1));
if (vol.writes != 0)
printf("\t\tAverage write:\t%16lld bytes\n",
(long long) (vol.bytes_written / vol.writes));
printf("\t\tActive requests:\t%8d\n", vol.active);
} else { /* brief stats listing */
printf("%-15s\t%7lld\t%15lld\t",
vol.name,
(long long) vol.reads,
(long long) vol.bytes_read);
if (vol.reads != 0)
printf("%7lld\t",
(long long) (vol.bytes_read / vol.reads));
else
printf("\t");
printf("%7lld\t", (long long) vol.recovered_reads);
printf("%7lld\t%15lld\t",
(long long) vol.writes,
vol.bytes_written);
if (vol.writes != 0)
printf("%7lld\n",
(long long) (vol.bytes_written / vol.writes));
else
printf("\n");
}
}
if (vol.plexes > 0) {
int plexno;
if (Verbose) { /* brief list */
for (plexno = 0; plexno < vol.plexes; plexno++) {
get_plex_info(&plex, vol.plex[plexno]);
/* Just a brief summary here */
printf("\t\tPlex %2d:\t%s\t(%s), %s\n",
plexno,
plex.name,
plex_org(plex.organization),
roughlength(plex.length << DEV_BSHIFT, 0));
}
}
if (recurse) {
for (plexno = 0; plexno < vol.plexes; plexno++)
vinum_lpi(vol.plex[plexno], 0); /* first show the plexes */
for (plexno = 0; plexno < vol.plexes; plexno++) { /* then the subdisks */
get_plex_info(&plex, vol.plex[plexno]);
if (plex.subdisks > 0) {
int sdno;
for (sdno = 0; sdno < plex.subdisks; sdno++) {
get_plex_sd_info(&sd, vol.plex[plexno], sdno);
vinum_lsi(sd.sdno, 0);
}
}
}
printf("\n");
}
}
}
}
void
vinum_lv(int argc, char *argv[], char *argv0[])
{
int i;
int volno;
enum objecttype type;
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
if (argc == 0)
for (volno = 0; volno < vinum_conf.volumes_allocated; volno++)
vinum_lvi(volno, recurse);
else {
for (i = 0; i < argc; i++) {
volno = find_object(argv[i], &type);
if (type == volume_object)
vinum_lvi(volno, recurse);
else
fprintf(stderr, "%s is not a volume\n", argv[i]);
}
}
}
void
vinum_lpi(int plexno, int recurse)
{
get_plex_info(&plex, plexno);
if (plex.state != plex_unallocated) {
if (vflag) {
printf("Plex %s:\tSize:\t%9lld bytes (%lld MB)\n\t\tSubdisks: %8d\n",
plex.name,
(long long) plex.length * DEV_BSIZE,
(long long) plex.length * DEV_BSIZE / MEGABYTE,
plex.subdisks);
printf("\t\tState: %s\n\t\tOrganization: %s",
plex_state(plex.state),
plex_org(plex.organization));
if (isstriped((&plex)))
printf("\tStripe size: %s\n", roughlength(plex.stripesize * DEV_BSIZE, 1));
else
printf("\n");
if ((isparity((&plex)))
&& (plex.checkblock != 0))
printf("\t\tCheck block pointer:\t\t%s (%d%%)\n",
roughlength((plex.checkblock << DEV_BSHIFT) * (plex.subdisks - 1), 0),
(int) (((u_int64_t) (plex.checkblock * 100)) * (plex.subdisks - 1) / plex.length));
if (plex.volno >= 0) {
get_volume_info(&vol, plex.volno);
printf("\t\tPart of volume %s\n", vol.name);
}
} else if (!sflag) { /* non-verbose list */
char *org = ""; /* organization */
switch (plex.organization) {
case plex_disorg: /* disorganized */
org = "??";
break;
case plex_concat: /* concatenated plex */
org = "C";
break;
case plex_striped: /* striped plex */
org = "S";
break;
case plex_raid4: /* RAID4 plex */
org = "R4";
break;
case plex_raid5: /* RAID5 plex */
org = "R5";
break;
}
printf("P %-18s %2s State: %s\tSubdisks: %5d\tSize: %s",
plex.name,
org,
plex_state(plex.state),
plex.subdisks,
roughlength(plex.length << DEV_BSHIFT, 0));
}
if (sflag) {
if (vflag || Verbose) {
printf("\t\tReads: \t%16lld\n\t\tBytes read:\t%16lld (%s)\n",
(long long) plex.reads,
(long long) plex.bytes_read,
roughlength(plex.bytes_read, 1));
if (plex.reads != 0)
printf("\t\tAverage read:\t%16lld bytes\n",
(long long) (plex.bytes_read / plex.reads));
printf("\t\tWrites: \t%16lld\n\t\tBytes written:\t%16lld (%s)\n",
(long long) plex.writes,
(long long) plex.bytes_written,
roughlength(plex.bytes_written, 1));
if (plex.writes != 0)
printf("\t\tAverage write:\t%16lld bytes\n",
(long long) (plex.bytes_written / plex.writes));
if (((plex.reads + plex.writes) > 0)
&& isstriped((&plex)))
printf("\t\tMultiblock:\t%16lld (%d%%)\n"
"\t\tMultistripe:\t%16lld (%d%%)\n",
(long long) plex.multiblock,
(int) (plex.multiblock * 100 / (plex.reads + plex.writes)),
(long long) plex.multistripe,
(int) (plex.multistripe * 100 / (plex.reads + plex.writes)));
if (plex.recovered_reads)
printf("\t\tRecovered reads:%16lld\n",
(long long) plex.recovered_reads);
if (plex.degraded_writes)
printf("\t\tDegraded writes:%16lld\n",
(long long) plex.degraded_writes);
if (plex.parityless_writes)
printf("\t\tParityless writes:%14lld\n",
(long long) plex.parityless_writes);
} else {
printf("%-15s\t%7lld\t%15lld\t",
plex.name,
(long long) plex.reads,
(long long) plex.bytes_read);
if (plex.reads != 0)
printf("%7lld\t",
(long long) (plex.bytes_read / plex.reads));
else
printf("\t");
printf("%7lld\t", (long long) plex.recovered_reads);
printf("%7lld\t%15lld\t",
(long long) plex.writes,
(long long) plex.bytes_written);
if (plex.writes != 0)
printf("%7lld\t",
(long long) (plex.bytes_written / plex.writes));
else
printf("\t");
printf("%7lld\t%7lld\n",
(long long) plex.multiblock,
(long long) plex.multistripe);
}
}
if (plex.subdisks > 0) {
int sdno;
if (Verbose) {
printf("\n");
for (sdno = 0; sdno < plex.subdisks; sdno++) {
get_plex_sd_info(&sd, plexno, sdno);
printf("\t\tSubdisk %d:\t%s\n\t\t state: %s\tsize %11lld (%lld MB)\n",
sdno,
sd.name,
sd_state(sd.state),
(long long) sd.sectors * DEV_BSIZE,
(long long) sd.sectors * DEV_BSIZE / MEGABYTE);
if (plex.organization == plex_concat)
printf("\t\t\toffset %9ld (0x%lx)\n",
(long) sd.plexoffset,
(long) sd.plexoffset);
}
}
if (recurse) {
printf("\n");
for (sdno = 0; sdno < plex.subdisks; sdno++) {
get_plex_sd_info(&sd, plexno, sdno);
vinum_lsi(sd.sdno, 0);
}
}
}
printf("\n");
}
}
void
vinum_lp(int argc, char *argv[], char *argv0[])
{
int i;
int plexno;
enum objecttype type;
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
if (argc == 0) {
for (plexno = 0; plexno < vinum_conf.plexes_allocated; plexno++)
vinum_lpi(plexno, recurse);
} else {
for (i = 0; i < argc; i++) {
plexno = find_object(argv[i], &type);
if (type == plex_object)
vinum_lpi(plexno, recurse);
else
fprintf(stderr, "%s is not a plex\n", argv[i]);
}
}
}
void
vinum_lsi(int sdno, int recurse)
{
long long revived; /* keep an eye on revive progress */
int times;
get_sd_info(&sd, sdno);
if (sd.state != sd_unallocated) {
get_drive_info(&drive, sd.driveno);
if (vflag) {
printf("Subdisk %s:\n\t\tSize: %16lld bytes (%lld MB)\n\t\tState: %s\n",
sd.name,
(long long) sd.sectors * DEV_BSIZE,
(long long) sd.sectors / (MEGABYTE / DEV_BSIZE),
sd_state(sd.state));
if (sd.flags & VF_RETRYERRORS)
printf("\t\tretryerrors\n");
if (sd.plexno >= 0) {
get_plex_info(&plex, sd.plexno);
printf("\t\tPlex %s", plex.name);
printf(" at offset %lld (%s)\n",
(long long) sd.plexoffset * DEV_BSIZE,
roughlength((long long) sd.plexoffset * DEV_BSIZE, 1));
}
if (sd.state == sd_reviving) {
if (sd.reviver == 0)
printf("\t\t*** Start subdisk with 'start' command ***\n");
else {
printf("\t\tReviver PID:\t%d\n", sd.reviver);
if (kill(sd.reviver, 0) == -1) {
if (errno == ESRCH) /* no process */
printf("\t\t*** Revive process has died ***\n");
/* Don't report a problem that "can't happen" */
} else {
revived = sd.revived; /* note how far we were */
/*
* Wait for up to a second until we
* see some progress with the revive.
* Do it like this so we don't have
* annoying delays in the listing.
*/
for (times = 0; times < STALLCOUNT; times++) {
get_sd_info(&sd, sdno);
if (sd.revived != revived) /* progress? */
break;
usleep(50000);
}
if (times == STALLCOUNT)
printf("\t\t*** Revive has stalled ***\n");
}
}
printf("\t\tRevive pointer:\t\t%s (%d%%)\n",
roughlength(sd.revived << DEV_BSHIFT, 0),
(int) (((u_int64_t) (sd.revived * 100)) / sd.sectors));
printf("\t\tRevive blocksize:\t%s\n"
"\t\tRevive interval:\t%10d seconds\n",
roughlength(sd.revive_blocksize, 0),
sd.revive_interval);
}
if (sd.state == sd_initializing) {
printf("\t\tInitialize pointer:\t%s (%d%%)\n",
roughlength(sd.initialized << DEV_BSHIFT, 0),
(int) (((u_int64_t) (sd.initialized * 100)) / sd.sectors));
printf("\t\tInitialize blocksize:\t%s\n"
"\t\tInitialize interval:\t%10d seconds\n",
roughlength(sd.init_blocksize, 0),
sd.init_interval);
}
if (sd.driveoffset < 0)
printf("\t\tDrive %s (%s), no offset\n",
drive.label.name,
drive.devicename);
else if (drive.devicename[0] != '\0') /* has a name */
printf("\t\tDrive %s (%s) at offset %lld (%s)\n",
drive.label.name,
drive.devicename,
(long long) (sd.driveoffset * DEV_BSIZE),
roughlength(sd.driveoffset * DEV_BSIZE, 1));
else
printf("\t\tDrive %s (*missing*) at offset %lld (%s)\n",
drive.label.name,
(long long) (sd.driveoffset * DEV_BSIZE),
roughlength(sd.driveoffset * DEV_BSIZE, 1));
} else if (!sflag) { /* brief listing, no stats */
if (sd.state == sd_reviving)
printf("S %-21s State: R %d%%\t",
sd.name,
(int) (((u_int64_t) (sd.revived * 100)) / sd.sectors));
else if (sd.state == sd_initializing)
printf("S %-21s State: I %d%%\t",
sd.name,
(int) (((u_int64_t) (sd.initialized * 100)) / sd.sectors));
else
printf("S %-21s State: %s\t",
sd.name,
sd_state(sd.state));
printf("D: %-12s Size: %s\n",
drive.label.name,
roughlength(sd.sectors << DEV_BSHIFT, 0));
if (sd.state == sd_reviving) {
if (sd.reviver == 0)
printf("\t\t\t*** Start %s with 'start' command ***\n",
sd.name);
else if (kill(sd.reviver, 0) == -1) {
if (errno == ESRCH) /* no process */
printf("\t\t\t*** Revive process for %s has died ***\n",
sd.name);
/* Don't report a problem that "can't happen" */
} else {
revived = sd.revived; /* note how far we were */
/*
* Wait for up to a second until we
* see some progress with the revive.
* Do it like this so we don't have
* annoying delays in the listing.
*/
for (times = 0; times < STALLCOUNT; times++) {
get_sd_info(&sd, sdno);
if (sd.revived != revived) /* progress? */
break;
usleep(50000);
}
if (times == STALLCOUNT)
printf("\t\t\t*** Revive of %s has stalled ***\n",
sd.name);
}
}
}
if (sflag) {
if (vflag || Verbose) {
printf("\t\tReads: \t%16lld\n\t\tBytes read:\t%16lld (%s)\n",
(long long) sd.reads,
(long long) sd.bytes_read,
roughlength(sd.bytes_read, 1));
if (sd.reads != 0)
printf("\t\tAverage read:\t%16lld bytes\n",
(long long) (sd.bytes_read / sd.reads));
printf("\t\tWrites: \t%16lld\n\t\tBytes written:\t%16lld (%s)\n",
(long long) sd.writes,
(long long) sd.bytes_written,
roughlength(sd.bytes_written, 1));
if (sd.writes != 0)
printf("\t\tAverage write:\t%16lld bytes\n",
(long long) (sd.bytes_written / sd.writes));
} else {
printf("%-15s\t%7lld\t%15lld\t",
sd.name,
(long long) sd.reads,
(long long) sd.bytes_read);
if (sd.reads != 0)
printf("%7lld\t\t",
(long long) (sd.bytes_read / sd.reads));
else
printf("\t\t");
printf("%7lld\t%15lld\t",
(long long) sd.writes,
(long long) sd.bytes_written);
if (sd.writes != 0)
printf("%7lld\n",
(long long) (sd.bytes_written / sd.writes));
else
printf("\n");
}
}
if (recurse)
vinum_ldi(sd.driveno, 0);
if (vflag)
printf("\n"); /* make it more readable */
}
}
void
vinum_ls(int argc, char *argv[], char *argv0[])
{
int i;
int sdno;
/* Structures to read kernel data into */
struct __vinum_conf vinum_conf;
enum objecttype type;
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
if (argc == 0) {
for (sdno = 0; sdno < vinum_conf.subdisks_allocated; sdno++)
vinum_lsi(sdno, recurse);
} else { /* specific subdisks */
for (i = 0; i < argc; i++) {
sdno = find_object(argv[i], &type);
if (type == sd_object)
vinum_lsi(sdno, recurse);
else
fprintf(stderr, "%s is not a subdisk\n", argv[i]);
}
}
}
/* List the complete configuration.
* XXX Change this to specific lists */
void
listconfig()
{
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
printf("%d drives:\n", vinum_conf.drives_used);
if (vinum_conf.drives_used > 0) {
vinum_ld(0, NULL, NULL);
printf("\n");
}
printf("%d volumes:\n", vinum_conf.volumes_used);
if (vinum_conf.volumes_used > 0) {
vinum_lv(0, NULL, NULL);
printf("\n");
}
printf("%d plexes:\n", vinum_conf.plexes_used);
if (vinum_conf.plexes_used > 0) {
vinum_lp(0, NULL, NULL);
printf("\n");
}
printf("%d subdisks:\n", vinum_conf.subdisks_used);
if (vinum_conf.subdisks_used > 0)
vinum_ls(0, NULL, NULL);
}
/* Convert a timeval to Tue Oct 13 13:54:14.0434324
* Return pointer to text */
char *
timetext(struct timeval *time)
{
static char text[30];
time_t t; /* to keep Bruce happy */
t = time->tv_sec;
strcpy(text, ctime(&t)); /* to the second */
sprintf(&text[19], ".%06ld", time->tv_usec); /* and the microseconds */
return &text[11];
}
/* Return the difference in microseconds between two timevals. */
inline struct timeval
timediff(struct timeval then, struct timeval now)
{
struct timeval diff;
diff.tv_sec = now.tv_sec - then.tv_sec;
diff.tv_usec = now.tv_usec - then.tv_usec;
if (diff.tv_usec < 0) {
diff.tv_usec += 1000000;
diff.tv_sec--;
}
return diff;
}
void
vinum_info(int argc, char *argv[], char *argv0[])
{
struct meminfo meminfo;
struct mc malloced;
int i;
struct rqinfo rq;
struct timeval lasttime; /* time of previous request */
struct timeval diff; /* difference from now */
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
if ((vinum_conf.flags & VF_HASDEBUG) == 0)
fprintf(stderr, "Kernel module does not have debug support\n");
else {
printf("Flags: 0x%x\n", vinum_conf.flags);
if (ioctl(superdev, VINUM_MEMINFO, &meminfo) < 0) {
perror("Can't get information");
return;
}
printf("Total of %d blocks malloced, total memory: %d\n"
"Maximum allocs: %8d, malloc table at 0x%08x\n",
meminfo.mallocs,
meminfo.total_malloced,
meminfo.highwater,
(int) meminfo.malloced);
printf("%d requests active, maximum %d active\n",
vinum_conf.active,
vinum_conf.maxactive);
if (vflag && (!Verbose))
for (i = 0; i < meminfo.mallocs; i++) {
malloced.seq = i;
if (ioctl(superdev, VINUM_MALLOCINFO, &malloced) < 0) {
perror("Can't get information");
return;
}
if (!(i & 63))
printf("Block\tSequence\t size\t address\t line\t\tfile\n\n");
printf("%6d\t%6d\t\t%6d\t0x%08x\t%6d\t\t%s\n",
i,
malloced.seq,
malloced.size,
(int) malloced.address,
malloced.line,
(char *) &malloced.file);
}
if (Verbose) {
if (Verbose > 1) {
lasttime.tv_sec = 0;
lasttime.tv_usec = 0;
printf("\n Time\t\t Event\t Buf\tDev\t Offset\t"
"Bytes\tSD\tSDoff\tDoffset\tGoffset\n\n");
} else
printf("\nTime\t\t Event\t Buf\tDev\t Offset\tBytes\tSD"
"\tSDoff\tDoffset\tGoffset\n\n");
for (i = RQINFO_SIZE - 1; i >= 0; i--) { /* go through the request list in order */
*((int *) &rq) = i;
if (ioctl(superdev, VINUM_RQINFO, &rq) < 0) {
perror("Can't get information");
return;
}
if (rq.type != loginfo_unused) {
switch (Verbose) {
case 2:
if ((lasttime.tv_usec != 0) || (lasttime.tv_sec != 0)) {
diff = timediff(lasttime, rq.timestamp);
if (diff.tv_sec != 0)
printf("\n+ %d.%06d sec:\n ", diff.tv_sec, diff.tv_usec);
else
printf("+%6d <20>s ", diff.tv_usec);
} else
printf(" ");
break;
case 3:
if ((lasttime.tv_usec != 0) || (lasttime.tv_sec != 0))
diff = timediff(lasttime, rq.timestamp);
if (diff.tv_sec != 0)
printf("\n+ %d.%06d sec:\n ", diff.tv_sec, diff.tv_usec);
else if (rq.type == loginfo_iodone) {
diff = timediff(rq.info.rqe.launchtime, rq.timestamp);
printf("+%6d <20>s ",
diff.tv_usec);
} else
printf(" ");
break;
default:
break;
}
/* Compress devminor into something printable. */
rq.devminor = (rq.devminor & 0xff)
| ((rq.devminor & 0xfff0000) >> 8);
switch (rq.type) {
case loginfo_user_bp: /* this is the bp when strategy is called */
printf("%s %dVS %s %p\t%2d.%-6d 0x%9llx\t%d\n",
timetext(&rq.timestamp),
rq.type,
rq.info.b.b_iocmd == BIO_READ ? "Read " : "Write",
rq.bp,
rq.devmajor,
rq.devminor,
rq.info.b.b_blkno,
rq.info.b.b_bcount);
break;
case loginfo_sdiol: /* subdisk I/O launch */
case loginfo_user_bpl: /* and this is the bp at launch time */
printf("%s %dLR %s %p\t%2d.%-6d 0x%9llx\t%ld\n",
timetext(&rq.timestamp),
rq.type,
rq.info.b.b_iocmd == BIO_READ ? "Read " : "Write",
rq.bp,
rq.devmajor,
rq.devminor,
rq.info.b.b_blkno,
rq.info.b.b_bcount);
break;
case loginfo_rqe: /* user RQE */
/*
* We have two timestamps
* in this request, and
* they might not agree by
* one or two <20>s. Make
* them agree by force.
*/
rq.timestamp = rq.info.rqe.launchtime;
printf("%s 3RQ %s %p\t%2d.%-6d 0x%9llx\t%ld\t%d\t%6x\t%6x\t%x\n",
timetext(&rq.timestamp),
rq.info.rqe.b.b_iocmd == BIO_READ ? "Read " : "Write",
rq.bp,
rq.devmajor,
rq.devminor,
rq.info.rqe.b.b_blkno,
rq.info.rqe.b.b_bcount,
rq.info.rqe.sdno,
rq.info.rqe.sdoffset,
rq.info.rqe.dataoffset,
rq.info.rqe.groupoffset);
break;
case loginfo_iodone: /* iodone called */
printf("%s 4DN %s %p\t%2d.%-6d 0x%9llx\t%ld\t%d\t%6x\t%6x\t%x\n",
timetext(&rq.timestamp),
rq.info.rqe.b.b_iocmd == BIO_READ ? "Read " : "Write",
rq.bp,
rq.devmajor,
rq.devminor,
rq.info.rqe.b.b_blkno,
rq.info.rqe.b.b_bcount,
rq.info.rqe.sdno,
rq.info.rqe.sdoffset,
rq.info.rqe.dataoffset,
rq.info.rqe.groupoffset);
break;
case loginfo_raid5_data: /* RAID-5 write data block */
printf("%s 5RD %s %p\t%2d.%-6d 0x%9llx\t%ld\t%d\t%6x\t%6x\t%x\n",
timetext(&rq.timestamp),
rq.info.rqe.b.b_iocmd == BIO_READ ? "Read " : "Write",
rq.bp,
rq.devmajor,
rq.devminor,
rq.info.rqe.b.b_blkno,
rq.info.rqe.b.b_bcount,
rq.info.rqe.sdno,
rq.info.rqe.sdoffset,
rq.info.rqe.dataoffset,
rq.info.rqe.groupoffset);
break;
case loginfo_raid5_parity: /* RAID-5 write parity block */
printf("%s 6RP %s %p\t%2d.%-6d 0x%9llx\t%ld\t%d\t%6x\t%6x\t%x\n",
timetext(&rq.timestamp),
rq.info.rqe.b.b_iocmd == BIO_READ ? "Read " : "Write",
rq.bp,
rq.devmajor,
rq.devminor,
rq.info.rqe.b.b_blkno,
rq.info.rqe.b.b_bcount,
rq.info.rqe.sdno,
rq.info.rqe.sdoffset,
rq.info.rqe.dataoffset,
rq.info.rqe.groupoffset);
break;
case loginfo_sdio: /* subdisk I/O */
printf("%s %dVS %s %p\t\t 0x%9llx\t%ld\t%d\n",
timetext(&rq.timestamp),
rq.type,
rq.info.b.b_iocmd == BIO_READ ? "Read " : "Write",
rq.bp,
rq.info.b.b_blkno,
rq.info.b.b_bcount,
rq.devminor);
break;
case loginfo_sdiodone: /* subdisk I/O done */
printf("%s %dSD %s %p\t\t 0x%9llx\t%ld\t%d\n",
timetext(&rq.timestamp),
rq.type,
rq.info.b.b_iocmd == BIO_READ ? "Read " : "Write",
rq.bp,
rq.info.b.b_blkno,
rq.info.b.b_bcount,
rq.devminor);
break;
case loginfo_lockwait:
printf("%s Lockwait %p\t 0x%x\n",
timetext(&rq.timestamp),
rq.bp,
rq.info.lockinfo.stripe);
break;
case loginfo_lock:
printf("%s Lock %p\t 0x%x\n",
timetext(&rq.timestamp),
rq.bp,
rq.info.lockinfo.stripe);
break;
case loginfo_unlock:
printf("%s Unlock\t %p\t 0x%x\n",
timetext(&rq.timestamp),
rq.bp,
rq.info.lockinfo.stripe);
break;
default:
printf("*** invalid log type: %d ***\n", rq.type);
}
if (Verbose > 1)
lasttime = rq.timestamp;
}
}
}
}
}
/*
* Print config file to a file. This is a userland version
* of kernel format_config
*/
void
vinum_printconfig(int argc, char *argv[], char *argv0[])
{
FILE *of;
if (argc > 1) {
fprintf(stderr, "usage: \tprintconfig [<outfile>]\n");
return;
} else if (argc == 1)
of = fopen(argv[0], "w");
else
of = stdout;
if (of == NULL) {
fprintf(stderr, "Can't open %s: %s\n", argv[0], strerror(errno));
return;
}
printconfig(of, "");
if (argc == 1)
fclose(of);
}
/*
* The guts of printconfig. This is called from
* vinum_printconfig and from vinum_create when
* called without an argument, in order to give
* the user something to edit.
*/
void
printconfig(FILE * of, char *comment)
{
struct utsname uname_s;
time_t now;
int i;
struct _volume vol;
struct _plex plex;
struct _sd sd;
struct _drive drive;
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
uname(&uname_s); /* get our system name */
time(&now); /* and the current time */
fprintf(of,
"# Vinum configuration of %s, saved at %s",
uname_s.nodename,
ctime(&now)); /* say who did it */
if (comment[0] != 0) /* abuse this for commented version */
fprintf(of, "# Current configuration:\n");
for (i = 0; i < vinum_conf.drives_allocated; i++) {
get_drive_info(&drive, i);
if (drive.state != drive_unallocated) {
fprintf(of,
"%sdrive %s device %s\n",
comment,
drive.label.name,
drive.devicename);
}
}
for (i = 0; i < vinum_conf.volumes_allocated; i++) {
get_volume_info(&vol, i);
if (vol.state != volume_unallocated) {
if (vol.preferred_plex >= 0) { /* preferences, */
get_plex_info(&plex, vol.plex[vol.preferred_plex]);
fprintf(of,
"%svolume %s readpol prefer %s\n",
comment,
vol.name,
plex.name);
} else /* default round-robin */
fprintf(of, "%svolume %s\n", comment, vol.name);
}
}
/* Then the plex configuration */
for (i = 0; i < vinum_conf.plexes_allocated; i++) {
get_plex_info(&plex, i);
if (plex.state != plex_unallocated) {
fprintf(of, "%splex name %s org %s ",
comment,
plex.name,
plex_org(plex.organization));
if (isstriped((&plex)))
fprintf(of, "%ds ", (int) plex.stripesize);
if (plex.volno >= 0) { /* we have a volume */
get_volume_info(&vol, plex.volno);
fprintf(of, "vol %s ", vol.name);
if ((vol.preferred_plex >= 0) /* has a preferred plex */
&&vol.plex[vol.preferred_plex] == i) /* and it's us */
fprintf(of, "preferred ");
} else
fprintf(of, "detached ");
fprintf(of, "\n");
}
}
/* And finally the subdisk configuration */
for (i = 0; i < vinum_conf.subdisks_allocated; i++) {
get_sd_info(&sd, i);
if (sd.state != sd_unallocated) {
get_drive_info(&drive, sd.driveno);
if (sd.plexno >= 0) {
get_plex_info(&plex, sd.plexno);
fprintf(of,
"%ssd name %s drive %s plex %s len %llds driveoffset %llds plexoffset %llds\n",
comment,
sd.name,
drive.label.name,
plex.name,
(long long) sd.sectors,
(long long) sd.driveoffset,
(long long) sd.plexoffset);
} else
fprintf(of,
"%ssd name %s drive %s detached len %llds driveoffset %llds\n",
comment,
sd.name,
drive.label.name,
(long long) sd.sectors,
(long long) sd.driveoffset);
}
}
}
void
list_defective_objects()
{
int o; /* object */
int heading_needed = 1;
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
for (o = 0; o < vinum_conf.drives_allocated; o++) {
get_drive_info(&drive, o);
if ((drive.state != drive_unallocated) /* drive exists */
&&(drive.state != drive_up)) { /* but it's not up */
if (heading_needed) {
printf("Warning: defective objects\n\n");
heading_needed = 0;
}
vinum_ldi(o, 0); /* print info */
}
}
for (o = 0; o < vinum_conf.volumes_allocated; o++) {
get_volume_info(&vol, o);
if ((vol.state != volume_unallocated) /* volume exists */
&&(vol.state != volume_up)) { /* but it's not up */
if (heading_needed) {
printf("Warning: defective objects\n\n");
heading_needed = 0;
}
vinum_lvi(o, 0); /* print info */
}
}
for (o = 0; o < vinum_conf.plexes_allocated; o++) {
get_plex_info(&plex, o);
if ((plex.state != plex_unallocated) /* plex exists */
&&(plex.state != plex_up)) { /* but it's not up */
if (heading_needed) {
printf("Warning: defective objects\n\n");
heading_needed = 0;
}
vinum_lpi(o, 0); /* print info */
}
}
for (o = 0; o < vinum_conf.subdisks_allocated; o++) {
get_sd_info(&sd, o);
if ((sd.state != sd_unallocated) /* sd exists */
&&(sd.state != sd_up)) { /* but it's not up */
if (heading_needed) {
printf("Warning: defective objects\n\n");
heading_needed = 0;
}
vinum_lsi(o, 0); /* print info */
}
}
}
/* Dump config from specified disk drives */
void
vinum_dumpconfig(int argc, char *argv[], char *argv0[])
{
int i;
if (argc == 0) { /* dump everything */
int devs = devstat_getnumdevs(NULL);
struct statinfo statinfo;
char *namelist;
char *enamelist; /* end of name list */
int i;
char **token; /* list of tokens */
int tokens; /* and their number */
bzero(&statinfo, sizeof(struct statinfo));
statinfo.dinfo = malloc(devs * sizeof(struct statinfo));
namelist = malloc(devs * (DEVSTAT_NAME_LEN + 8));
token = malloc((devs + 1) * sizeof(char *));
if ((statinfo.dinfo == NULL) || (namelist == NULL) || (token == NULL)) {
fprintf(stderr, "Can't allocate memory for drive list\n");
return;
}
bzero(statinfo.dinfo, sizeof(struct devinfo));
tokens = 0; /* no tokens yet */
if (devstat_getdevs(NULL, &statinfo) < 0) { /* find out what devices we have */
perror("Can't get device list");
return;
}
namelist[0] = '\0'; /* start with empty namelist */
enamelist = namelist; /* point to the end of the list */
for (i = 0; i < devs; i++) {
struct devstat *stat = &statinfo.dinfo->devices[i];
if (((stat->device_type & DEVSTAT_TYPE_MASK) == DEVSTAT_TYPE_DIRECT) /* disk device */
&&((stat->device_type & DEVSTAT_TYPE_PASS) == 0) /* and not passthrough */
&&((stat->device_name[0] != '\0'))) { /* and it has a name */
sprintf(enamelist, "/dev/%s%d", stat->device_name, stat->unit_number);
token[tokens] = enamelist; /* point to it */
tokens++; /* one more token */
enamelist = &enamelist[strlen(enamelist) + 1]; /* and start beyond the end */
}
}
free(statinfo.dinfo); /* don't need the list any more */
for (i = 0; i < tokens; i++)
dumpconfig(token[i]);
free(namelist);
free(token);
} else { /* list specified drives */
for (i = 0; i < argc; i++)
dumpconfig(argv[i]);
}
}
#define DEVLEN 5
void
dumpconfig(char *part)
{
char partname[MAXPATHLEN];
char *partid;
char partition; /* UNIX partition */
int slice;
int founddrive; /* flag when we find a vinum drive */
struct disklabel label; /* label of this drive */
int driveno; /* fd of drive */
int found;
u_int64_t drivelength;
if (memcmp(part, "/dev/", DEVLEN) == 0) /* starts with /dev */
memcpy(partname, part, MAXPATHLEN);
else { /* prepend */
strcpy(partname, "/dev/");
strncat(&partname[DEVLEN], part, MAXPATHLEN - DEVLEN);
}
partid = &partname[strlen(partname)];
founddrive = 0; /* no vinum drive found yet on this spindle */
/* first try the partition table */
for (slice = 1; slice < 5; slice++) {
sprintf(partid, "s%dc", slice); /* c partition */
driveno = open(partname, O_RDONLY);
if (driveno < 0) {
if (errno != ENOENT)
fprintf(stderr, "Can't open %s: %s (%d)\n", partname, strerror(errno), errno);
continue;
}
if (ioctl(driveno, DIOCGDINFO, &label) < 0) {
if ((errno != EINVAL) || vflag)
fprintf(stderr, "Can't get label from %s: %s (%d)\n", partname, strerror(errno), errno);
continue;
}
for (partition = 'a'; partition < 'i'; partition++) {
if ((partition != 'c') /* it's not the c partition */
&&((label.d_partitions[partition - 'a'].p_fstype == FS_VINUM) /* and it's a Vinum partition */
||Verbose)) { /* or we're just plain curious */
sprintf(partid, "s%d%c", slice, partition);
found = check_drive(partname); /* try to open it */
founddrive |= found; /* and note if we were successful at all */
if (label.d_partitions[partition - 'a'].p_fstype == FS_VINUM) { /* it's a Vinum partition */
drivelength = ((u_int64_t) label.d_partitions[partition - 'a'].p_size) * DEV_BSIZE;
printf("Drive %s: %s (%lld bytes)\n",
partname,
roughlength(drivelength, 1),
drivelength);
if ((!found) && vflag) /* we're talkative */
printf("*** no configuration found ***\n");
}
}
}
}
if (founddrive == 0) { /* didn't find anything, */
sprintf(partid, "c"); /* c partition */
driveno = open(partname, O_RDONLY);
if (driveno < 0) {
if (errno != ENOENT)
fprintf(stderr, "Can't open %s: %s (%d)\n", partname, strerror(errno), errno);
return;
}
if (ioctl(driveno, DIOCGDINFO, &label) < 0) {
fprintf(stderr, "Can't get label from %s: %s (%d)\n", partname, strerror(errno), errno);
return;
}
for (partition = 'a'; partition < 'i'; partition++) { /* try the compatibility partition */
if ((partition != 'c') /* it's not the c partition */
&&((label.d_partitions[partition - 'a'].p_fstype == FS_VINUM) /* and it's a Vinum partition */
||Verbose)) { /* or we're just plain curious */
sprintf(partid, "%c", partition);
found = check_drive(partname); /* try to open it */
founddrive |= found; /* and note if we were successful at all */
if (label.d_partitions[partition - 'a'].p_fstype == FS_VINUM) { /* it's a Vinum partition */
drivelength = ((u_int64_t) label.d_partitions[partition - 'a'].p_size) * DEV_BSIZE;
printf("Drive %s: %s (%lld bytes)\n",
partname,
roughlength(drivelength, 1),
drivelength);
if ((!found) && vflag) /* we're talkative */
printf("*** no configuration found ***\n");
}
}
}
}
}
/*
* Check a drive for a Vinum header. If found,
* print configuration information from the drive.
*
* Return 1 if Vinum config found.
*/
int
check_drive(char *devicename)
{
int fd;
char vinumlabel[DEV_BSIZE]; /* one sector for label */
struct vinum_hdr *hdr = (struct vinum_hdr *) vinumlabel; /* with this structure */
char *config_text; /* read the config info from disk into here */
time_t t;
fd = open(devicename, O_RDONLY);
if (fd >= 0) {
if (lseek(fd, VINUM_LABEL_OFFSET, SEEK_SET) < 0) {
fprintf(stderr,
"Can't seek label for %s: %s (%d)\n",
devicename,
strerror(errno),
errno);
close(fd);
return 0;
}
if (read(fd, vinumlabel, DEV_BSIZE) != DEV_BSIZE) {
if (errno != EINVAL)
fprintf(stderr,
"Can't read label from %s: %s (%d)\n",
devicename,
strerror(errno),
errno);
close(fd);
return 0;
}
if ((hdr->magic == VINUM_MAGIC)
|| (vflag && (hdr->magic == VINUM_NOMAGIC))) {
printf("Drive %s:\tDevice %s\n",
hdr->label.name,
devicename);
if (hdr->magic == VINUM_NOMAGIC)
printf("*** Drive has been obliterated ***\n");
t = hdr->label.date_of_birth.tv_sec;
printf("\t\tCreated on %s at %s",
hdr->label.sysname,
ctime(&t));
t = hdr->label.last_update.tv_sec;
printf("\t\tConfig last updated %s", /* care: \n at end */
ctime(&t));
printf("\t\tSize: %16lld bytes (%lld MB)\n",
(long long) hdr->label.drive_size, /* bytes used */
(long long) (hdr->label.drive_size / MEGABYTE));
config_text = (char *) malloc(MAXCONFIG);
if (config_text == NULL)
fprintf(stderr, "Can't allocate memory\n");
else {
if (read(fd, config_text, MAXCONFIG) != MAXCONFIG)
fprintf(stderr,
"Can't read config from %s: %s (%d)\n",
devicename,
strerror(errno),
errno);
else
puts(config_text);
free(config_text);
}
}
close(fd);
return 1;
}
return 0;
}
int
checkupdates()
{
int options;
if (ioctl(superdev, VINUM_GETDAEMON, &options) < 0)
fprintf(stderr, "Can't get daemon options: %s (%d)\n", strerror(errno), errno);
if (options & daemon_noupdate) {
fprintf(stderr, "*** Warning: configuration updates are disabled. ***\n");
return 1;
} else
return 0;
}
/* Local Variables: */
/* fill-column: 50 */
/* End: */
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