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freebsd-dev/sbin/vinum/commands.c
Greg Lehey f2c4d303d7 Extend 'start' command: if used without any parameters, vinum scans 
all disks known to devstat for vinum drives and reads their
configuration.
1999-02-11 06:14:15 +00:00

1105 lines
33 KiB
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/* commands.c: vinum interface program, main commands */
/*-
* Copyright (c) 1997, 1998
* Nan Yang Computer Services Limited. All rights reserved.
*
* 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: commands.c,v 1.5 1999/01/18 03:36:32 grog Exp grog $ */
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <libutil.h>
#include <netdb.h>
#include <setjmp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <dev/vinum/vinumhdr.h>
#include "vext.h"
#include <sys/types.h>
#include <sys/wait.h>
#include <readline/history.h>
#include <readline/readline.h>
#include <devstat.h>
static void dorename(struct vinum_rename_msg *msg, const char *oldname, const char *name, int maxlen);
void
vinum_create(int argc, char *argv[], char *arg0[])
{
int error;
FILE *dfd; /* file descriptor for the config file */
char buffer[BUFSIZE]; /* read config file in here */
struct _ioctl_reply *reply;
if (argc != 1) { /* wrong arg count */
fprintf(stderr, "Expecting 1 parameter, not %d\n", argc);
return;
}
reply = (struct _ioctl_reply *) &buffer;
dfd = fopen(argv[0], "r");
if (dfd == NULL) { /* no go */
fprintf(stderr, "Can't open %s: %s\n", argv[0], strerror(errno));
return;
}
if (ioctl(superdev, VINUM_STARTCONFIG, NULL)) { /* can't get config? */
printf("Can't configure: %s (%d)\n", strerror(errno), errno);
return;
}
file_line = 0; /* start with line 1 */
/* Parse the configuration, and add it to the global configuration */
for (;;) { /* love this style(9) */
char *configline;
configline = fgets(buffer, BUFSIZE, dfd);
if (configline == NULL) {
if (ferror(dfd))
perror("Can't read config file");
break;
}
file_line++; /* count the lines */
if (verbose)
printf("%4d: %s", file_line, buffer); /* XXX */
ioctl(superdev, VINUM_CREATE, &buffer);
if (reply->error != 0) { /* error in config */
fprintf(stdout, "** %d %s: %s\n", file_line, reply->msg, strerror(reply->error));
/* XXX at the moment, we reset the config
* lock on error, so try to get it again.
* If we fail, don't cry again */
if (ioctl(superdev, VINUM_STARTCONFIG, NULL)) /* can't get config? */
return;
}
}
fclose(dfd); /* done with the config file */
error = ioctl(superdev, VINUM_SAVECONFIG, NULL); /* save the config to disk */
if (error != 0)
perror("Can't save Vinum config");
make_devices();
listconfig();
}
/* Read vinum config from a disk */
void
vinum_read(int argc, char *argv[], char *arg0[])
{
int error;
char buffer[BUFSIZE]; /* read config file in here */
struct _ioctl_reply *reply;
int i;
reply = (struct _ioctl_reply *) &buffer;
if (argc < 1) { /* wrong arg count */
fprintf(stderr, "Usage: read drive [drive ...]\n");
return;
}
strcpy(buffer, "read ");
for (i = 0; i < argc; i++) { /* each drive name */
strcat(buffer, argv[i]);
strcat(buffer, " ");
}
if (ioctl(superdev, VINUM_STARTCONFIG, NULL)) { /* can't get config? */
fprintf(stderr, "Can't configure: %s (%d)\n", strerror(errno), errno);
return;
}
ioctl(superdev, VINUM_CREATE, &buffer);
if (reply->error != 0) { /* error in config */
fprintf(stdout, "** %s: %s\n", reply->msg, strerror(reply->error));
error = ioctl(superdev, VINUM_RELEASECONFIG, NULL); /* save the config to disk */
if (error != 0)
perror("Can't save Vinum config");
} else {
error = ioctl(superdev, VINUM_RELEASECONFIG, NULL); /* save the config to disk */
if (error != 0)
perror("Can't save Vinum config");
make_devices();
}
}
void
vinum_volume(int argc, char *argv[], char *arg0[])
{
int i;
char *line;
struct _ioctl_reply *reply;
line = arg0[0];
for (i = 0; i < argc; i++)
line[strlen(line)] = ' '; /* remove the blocks */
ioctl(superdev, VINUM_CREATE, line);
reply = (struct _ioctl_reply *) line;
if (reply->error != 0) /* error in config */
fprintf(stdout, "** %d %s: %s\n", file_line, reply->msg, strerror(reply->error));
}
void
vinum_plex(int argc, char *argv[], char *arg0[])
{
int i;
char *line;
struct _ioctl_reply *reply;
line = arg0[0];
for (i = 0; i < argc; i++)
line[strlen(line)] = ' '; /* remove the blocks */
ioctl(superdev, VINUM_CREATE, line);
reply = (struct _ioctl_reply *) line;
if (reply->error != 0) /* error in config */
fprintf(stdout, "** %d %s: %s\n", file_line, reply->msg, strerror(reply->error));
}
void
vinum_sd(int argc, char *argv[], char *arg0[])
{
int i;
char *line;
struct _ioctl_reply *reply;
line = arg0[0];
for (i = 0; i < argc; i++)
line[strlen(line)] = ' '; /* remove the blocks */
ioctl(superdev, VINUM_CREATE, line);
reply = (struct _ioctl_reply *) line;
if (reply->error != 0) /* error in config */
fprintf(stdout, "** %d %s: %s\n", file_line, reply->msg, strerror(reply->error));
}
void
vinum_drive(int argc, char *argv[], char *arg0[])
{
int i;
char *line;
struct _ioctl_reply *reply;
line = arg0[0];
for (i = 0; i < argc; i++)
line[strlen(line)] = ' '; /* remove the blocks */
ioctl(superdev, VINUM_CREATE, line);
reply = (struct _ioctl_reply *) line;
if (reply->error != 0) /* error in config */
fprintf(stdout, "** %d %s: %s\n", file_line, reply->msg, strerror(reply->error));
}
#ifdef VINUMDEBUG
void
vinum_debug(int argc, char *argv[], char *arg0[])
{
struct debuginfo info;
if (argc > 0) {
info.param = atoi(argv[0]);
info.changeit = 1;
} else {
info.changeit = 0;
sleep(2); /* give a chance to leave the window */
}
ioctl(superdev, VINUM_DEBUG, (caddr_t) & info);
}
#endif
void
vinum_modify(int argc, char *argv[], char *arg0[])
{
fprintf(stderr, "Modify command is currently not implemented\n");
}
void
vinum_set(int argc, char *argv[], char *arg0[])
{
fprintf(stderr, "set is not implemented yet\n");
}
void
vinum_rm(int argc, char *argv[], char *arg0[])
{
int object;
struct _ioctl_reply reply;
struct vinum_ioctl_msg *message = (struct vinum_ioctl_msg *) &reply;
if (argc == 0) /* start everything */
fprintf(stderr, "Usage: rm object [object...]\n");
else { /* start specified objects */
int index;
enum objecttype type;
for (index = 0; index < argc; index++) {
object = find_object(argv[index], &type); /* look for it */
if (type == invalid_object)
fprintf(stderr, "Can't find object: %s\n", argv[index]);
else {
message->index = object; /* pass object number */
message->type = type; /* and type of object */
message->force = force; /* do we want to force the operation? */
message->recurse = recurse; /* do we want to remove subordinates? */
ioctl(superdev, VINUM_REMOVE, message);
if (reply.error != 0) {
fprintf(stderr,
"Can't remove %s: %s (%d)\n",
argv[index],
reply.msg[0] ? reply.msg : strerror(reply.error),
reply.error);
} else if (verbose)
fprintf(stderr, "%s removed\n", argv[index]);
}
}
}
}
void
vinum_resetconfig(int argc, char *argv[], char *arg0[])
{
char reply[32];
int error;
printf(" WARNING! This command will completely wipe out your vinum configuration.\n"
" All data will be lost. If you really want to do this, enter the text\n\n"
" NO FUTURE\n"
" Enter text -> ");
fgets(reply, sizeof(reply), stdin);
if (strcmp(reply, "NO FUTURE\n")) /* changed his mind */
printf("\n No change\n");
else {
error = ioctl(superdev, VINUM_RESETCONFIG, NULL); /* trash config on disk */
if (error) {
if (errno == EBUSY)
fprintf(stderr, "Can't reset configuration: objects are in use\n");
else
perror("Can't find vinum config");
} else {
printf("\b Vinum configuration obliterated\n");
system("rm -rf " VINUM_DIR "/" "*"); /* remove the old /dev/vinum */
syslog(LOG_NOTICE | LOG_KERN, "configuration obliterated");
start_daemon(); /* then restart the daemon */
}
}
}
/* Initialize a plex */
void
vinum_init(int argc, char *argv[], char *arg0[])
{
if (argc > 0) { /* initialize plexes */
int plexindex;
int sdno;
int plexno;
int plexfh = NULL; /* file handle for plex */
pid_t pid;
enum objecttype type; /* type returned */
struct _ioctl_reply reply;
struct vinum_ioctl_msg *message = (struct vinum_ioctl_msg *) &reply;
char filename[MAXPATHLEN]; /* create a file name here */
for (plexindex = 0; plexindex < argc; plexindex++) {
plexno = find_object(argv[plexindex], &type); /* find the object */
if (plexno < 0)
printf("Can't find %s\n", argv[plexindex]);
else if (type != plex_object) {
/* XXX Consider doing this for all plexes in
* a volume, etc. */
printf("%s is not a plex\n", argv[plexindex]);
break;
} else if (plex.state == plex_unallocated) /* not a real plex, */
printf("%s is not allocated, can't initialize\n", plex.name);
else {
sprintf(filename, VINUM_DIR "/plex/%s", argv[plexindex]);
if ((plexfh = open(filename, O_RDWR, S_IRWXU)) < 0) { /* got a plex, open it */
/* We don't actually write anything to the plex,
* since the system will try to format it. We open
* it to ensure that nobody else tries to open it
* while we initialize its subdisks */
fprintf(stderr, "can't open plex %s: %s\n", filename, strerror(errno));
return;
}
}
pid = fork();
if (pid == 0) { /* we're the child */
int failed = 0; /* set if a child dies badly */
int sdfh; /* and for subdisk */
char zeros[PLEXINITSIZE];
int count; /* write count */
long long offset; /* offset in subdisk */
long long sdsize; /* size of subdisk */
bzero(zeros, sizeof(zeros));
openlog("vinum", LOG_CONS | LOG_PERROR | LOG_PID, LOG_KERN);
for (sdno = 0; sdno < plex.subdisks; sdno++) { /* initialize each subdisk */
/* We already have the plex data in global
* plex from the call to find_object */
pid = fork(); /* into the background with you */
if (pid == 0) { /* I'm the child */
get_plex_sd_info(&sd, plexno, sdno);
sdsize = sd.sectors * DEV_BSIZE; /* size of subdisk in bytes */
sprintf(filename, VINUM_DIR "/rsd/%s", sd.name);
setproctitle("initializing %s", filename); /* show what we're doing */
syslog(LOG_INFO | LOG_KERN, "initializing subdisk %s", filename);
if ((sdfh = open(filename, O_RDWR, S_IRWXU)) < 0) { /* no go */
syslog(LOG_ERR | LOG_KERN,
"can't open subdisk %s: %s",
filename,
strerror(errno));
exit(1);
}
for (offset = 0; offset < sdsize; offset += count) {
count = write(sdfh, zeros, PLEXINITSIZE); /* write a block */
if (count < 0) {
syslog(LOG_ERR | LOG_KERN,
"can't write subdisk %s: %s",
filename,
strerror(errno));
exit(1);
}
/* XXX Grrrr why doesn't this thing recognize EOF? */
else if (count == 0)
break;
}
syslog(LOG_INFO | LOG_KERN, "subdisk %s initialized", filename);
/* Bring the subdisk up */
message->index = sd.sdno; /* pass object number */
message->type = sd_object; /* and type of object */
message->state = object_up;
message->force = 1; /* insist */
ioctl(superdev, VINUM_SETSTATE, message);
exit(0);
} else if (pid < 0) /* failure */
printf("couldn't fork for subdisk %d: %s", sdno, strerror(errno));
}
/* Now wait for them to complete */
for (sdno = 0; sdno < plex.subdisks; sdno++) {
int status;
pid = wait(&status);
if (WEXITSTATUS(status) != 0) { /* oh, oh */
printf("child %d exited with status 0x%x\n", pid, WEXITSTATUS(status));
failed++;
}
}
if (failed == 0) {
syslog(LOG_INFO | LOG_KERN, "plex %s initialized", plex.name);
} else
syslog(LOG_ERR | LOG_KERN, "couldn't initialize plex %s, %d processes died",
plex.name,
failed);
exit(0);
} else {
close(plexfh); /* we don't need this any more */
sleep(1); /* give them a chance to print */
}
}
}
}
void
vinum_start(int argc, char *argv[], char *arg0[])
{
int object;
struct _ioctl_reply reply;
struct vinum_ioctl_msg *message = (struct vinum_ioctl_msg *) &reply;
if (argc == 0) { /* start everything */
int devs = getnumdevs();
struct statinfo statinfo;
char *namelist;
char *enamelist; /* end of name list */
int i;
char **token; /* list of tokens */
int tokens; /* and their number */
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;
}
token[0] = "read"; /* make a read command of this mess */
tokens = 1; /* so far, it's the only token */
getdevs(&statinfo); /* find out what devices we have */
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 */
vinum_read(tokens, token, &token[0]); /* start the system */
free(namelist);
free(token);
} else { /* start specified objects */
int index;
enum objecttype type;
for (index = 0; index < argc; index++) {
object = find_object(argv[index], &type); /* look for it */
if (type == invalid_object)
fprintf(stderr, "Can't find object: %s\n", argv[index]);
else {
message->index = object; /* pass object number */
message->type = type; /* and type of object */
message->state = object_up;
message->force = 0; /* don't force it, use a larger hammer */
ioctl(superdev, VINUM_SETSTATE, message);
if (reply.error != 0) {
if ((reply.error == EAGAIN) /* we're reviving */
&&(type == sd_object))
continue_revive(object);
else
fprintf(stderr,
"Can't start %s: %s (%d)\n",
argv[index],
reply.msg[0] ? reply.msg : strerror(reply.error),
reply.error);
}
if (Verbose)
vinum_li(object, type);
}
}
}
}
void
vinum_stop(int argc, char *argv[], char *arg0[])
{
int object;
struct _ioctl_reply reply;
struct vinum_ioctl_msg *message = (struct vinum_ioctl_msg *) &reply;
message->force = force; /* should we force the transition? */
if (argc == 0) /* stop everything */
fprintf(stderr, "stop must have an argument\n");
else { /* stop specified objects */
int i;
enum objecttype type;
for (i = 0; i < argc; i++) {
object = find_object(argv[i], &type); /* look for it */
if (type == invalid_object)
fprintf(stderr, "Can't find object: %s\n", argv[i]);
else {
message->index = object; /* pass object number */
message->type = type; /* and type of object */
message->state = object_down;
ioctl(superdev, VINUM_SETSTATE, message);
if (reply.error != 0)
fprintf(stderr,
"Can't stop %s: %s (%d)\n",
argv[i],
reply.msg[0] ? reply.msg : strerror(reply.error),
reply.error);
if (Verbose)
vinum_li(object, type);
}
}
}
}
void
vinum_label(int argc, char *argv[], char *arg0[])
{
int object;
struct _ioctl_reply reply;
int *message = (int *) &reply;
if (argc == 0) /* start everything */
fprintf(stderr, "label: please specify one or more volume names\n");
else { /* start specified objects */
int i;
enum objecttype type;
for (i = 0; i < argc; i++) {
object = find_object(argv[i], &type); /* look for it */
if (type == invalid_object)
fprintf(stderr, "Can't find object: %s\n", argv[i]);
else if (type != volume_object) /* it exists, but it isn't a volume */
fprintf(stderr, "%s is not a volume\n", argv[i]);
else {
message[0] = object; /* pass object number */
ioctl(superdev, VINUM_LABEL, message);
if (reply.error != 0)
fprintf(stderr,
"Can't label %s: %s (%d)\n",
argv[i],
reply.msg[0] ? reply.msg : strerror(reply.error),
reply.error);
if (Verbose)
vinum_li(object, type);
}
}
}
}
void
reset_volume_stats(int volno, int recurse)
{
struct vinum_ioctl_msg msg;
struct _ioctl_reply *reply = (struct _ioctl_reply *) &msg;
msg.index = volno;
msg.type = volume_object;
/* XXX get these numbers right if we ever
* actually return errors */
if (ioctl(superdev, VINUM_RESETSTATS, &msg) < 0) {
fprintf(stderr, "Can't reset stats for volume %d: %s\n", volno, reply->msg);
longjmp(command_fail, -1);
} else if (recurse) {
struct volume vol;
int plexno;
get_volume_info(&vol, volno);
for (plexno = 0; plexno < vol.plexes; plexno++)
reset_plex_stats(vol.plex[plexno], recurse);
}
}
void
reset_plex_stats(int plexno, int recurse)
{
struct vinum_ioctl_msg msg;
struct _ioctl_reply *reply = (struct _ioctl_reply *) &msg;
msg.index = plexno;
msg.type = plex_object;
/* XXX get these numbers right if we ever
* actually return errors */
if (ioctl(superdev, VINUM_RESETSTATS, &msg) < 0) {
fprintf(stderr, "Can't reset stats for plex %d: %s\n", plexno, reply->msg);
longjmp(command_fail, -1);
} else if (recurse) {
struct plex plex;
struct sd sd;
int sdno;
get_plex_info(&plex, plexno);
for (sdno = 0; sdno < plex.subdisks; sdno++) {
get_plex_sd_info(&sd, plex.plexno, sdno);
reset_sd_stats(sd.sdno, recurse);
}
}
}
void
reset_sd_stats(int sdno, int recurse)
{
struct vinum_ioctl_msg msg;
struct _ioctl_reply *reply = (struct _ioctl_reply *) &msg;
msg.index = sdno;
msg.type = sd_object;
/* XXX get these numbers right if we ever
* actually return errors */
if (ioctl(superdev, VINUM_RESETSTATS, &msg) < 0) {
fprintf(stderr, "Can't reset stats for subdisk %d: %s\n", sdno, reply->msg);
longjmp(command_fail, -1);
} else if (recurse)
reset_drive_stats(sd.driveno);
}
void
reset_drive_stats(int driveno)
{
struct vinum_ioctl_msg msg;
struct _ioctl_reply *reply = (struct _ioctl_reply *) &msg;
msg.index = driveno;
msg.type = drive_object;
/* XXX get these numbers right if we ever
* actually return errors */
if (ioctl(superdev, VINUM_RESETSTATS, &msg) < 0) {
fprintf(stderr, "Can't reset stats for drive %d: %s\n", driveno, reply->msg);
longjmp(command_fail, -1);
}
}
void
vinum_resetstats(int argc, char *argv[], char *argv0[])
{
int i;
int objno;
enum objecttype type;
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
if (argc == 0) {
for (objno = 0; objno < vinum_conf.volumes_used; objno++)
reset_volume_stats(objno, 1); /* clear everything recursively */
} else {
for (i = 0; i < argc; i++) {
objno = find_object(argv[i], &type);
if (objno >= 0) { /* not invalid */
switch (type) {
case drive_object:
reset_drive_stats(objno);
break;
case sd_object:
reset_sd_stats(objno, recurse);
break;
case plex_object:
reset_plex_stats(objno, recurse);
break;
case volume_object:
reset_volume_stats(objno, recurse);
break;
case invalid_object: /* can't get this */
break;
}
}
}
}
}
/* Attach a subdisk to a plex, or a plex to a volume.
* attach subdisk plex [offset] [rename]
* attach plex volume [rename]
*/
void
vinum_attach(int argc, char *argv[], char *argv0[])
{
int i;
enum objecttype supertype;
struct vinum_ioctl_msg msg;
struct _ioctl_reply *reply = (struct _ioctl_reply *) &msg;
const char *objname = argv[0];
const char *supername = argv[1];
int sdno = -1;
int plexno = -1;
char newname[MAXNAME + 8];
int rename = 0; /* set if we want to rename the object */
if ((argc < 2)
|| (argc > 4)) {
fprintf(stderr,
"Usage: \tattach <subdisk> <plex> [rename] [<plexoffset>]\n"
"\tattach <plex> <volume> [rename]\n");
return;
}
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
msg.index = find_object(objname, &msg.type); /* find the object to attach */
msg.otherobject = find_object(supername, &supertype); /* and the object to attach to */
msg.force = force; /* did we specify the use of force? */
msg.recurse = recurse;
msg.offset = -1; /* and no offset */
for (i = 2; i < argc; i++) {
if (!strcmp(argv[i], "rename")) {
rename = 1;
msg.rename = 1; /* do renaming */
} else if (!isdigit(argv[i][0])) { /* not an offset */
fprintf(stderr, "Unknown attribute: %s\n", supername);
return;
} else
msg.offset = sizespec(argv[i]);
}
switch (msg.type) {
case sd_object:
if (supertype != plex_object) { /* huh? */
fprintf(stderr, "%s can only be attached to a plex\n", objname);
return;
}
get_plex_info(&plex, supertype);
if (plex.organization != plex_concat) { /* not a cat plex, */
fprintf(stderr, "Can't attach subdisks to a %s plex\n", plex_org(plex.organization));
return;
}
sdno = msg.index; /* note the subdisk number for later */
break;
case plex_object:
if (supertype != volume_object) { /* huh? */
fprintf(stderr, "%s can only be attached to a volume\n", objname);
return;
}
break;
case volume_object:
case drive_object:
fprintf(stderr, "Can only attach subdisks and plexes\n");
return;
default:
fprintf(stderr, "%s is not a Vinum object\n", objname);
return;
}
ioctl(superdev, VINUM_ATTACH, &msg);
if (reply->error != 0) {
if (reply->error == EAGAIN) /* reviving */
continue_revive(sdno); /* continue the revive */
else
fprintf(stderr,
"Can't attach %s to %s: %s (%d)\n",
objname,
supername,
reply->msg[0] ? reply->msg : strerror(reply->error),
reply->error);
}
if (rename) {
struct sd;
struct plex;
struct volume;
/* we've overwritten msg with the
* ioctl reply, start again */
msg.index = find_object(objname, &msg.type); /* find the object to rename */
switch (msg.type) {
case sd_object:
get_sd_info(&sd, msg.index);
get_plex_info(&plex, sd.plexno);
for (sdno = 0; sdno < plex.subdisks; sdno++) {
if (plex.sdnos[sdno] == msg.index) /* found our subdisk */
break;
}
sprintf(newname, "%s.s%d", plex.name, sdno);
vinum_rename_2(sd.name, newname);
break;
case plex_object:
get_plex_info(&plex, msg.index);
get_volume_info(&vol, plex.volno);
for (plexno = 0; plexno < vol.plexes; plexno++) {
if (vol.plex[plexno] == msg.index) /* found our subdisk */
break;
}
sprintf(newname, "%s.p%d", vol.name, plexno);
vinum_rename_2(plex.name, newname); /* this may recurse */
break;
default: /* can't get here */
}
}
}
/* Detach a subdisk from a plex, or a plex from a volume.
* detach subdisk plex [rename]
* detach plex volume [rename]
*/
void
vinum_detach(int argc, char *argv[], char *argv0[])
{
struct vinum_ioctl_msg msg;
struct _ioctl_reply *reply = (struct _ioctl_reply *) &msg;
if ((argc < 1)
|| (argc > 2)) {
fprintf(stderr,
"Usage: \tdetach <subdisk> [rename]\n"
"\tdetach <plex> [rename]\n");
return;
}
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
msg.index = find_object(argv[0], &msg.type); /* find the object to detach */
msg.force = force; /* did we specify the use of force? */
msg.rename = 0; /* don't specify new name */
msg.recurse = recurse; /* but recurse if we have to */
/* XXX are we going to keep this?
* Don't document it yet, since the
* kernel side of things doesn't
* implement it */
if (argc == 2) {
if (!strcmp(argv[1], "rename"))
msg.rename = 1; /* do renaming */
else {
fprintf(stderr, "Unknown attribute: %s\n", argv[1]);
return;
}
}
if ((msg.type != sd_object)
&& (msg.type != plex_object)) {
fprintf(stderr, "Can only detach subdisks and plexes\n");
return;
}
ioctl(superdev, VINUM_DETACH, &msg);
if (reply->error != 0)
fprintf(stderr,
"Can't detach %s: %s (%d)\n",
argv[0],
reply->msg[0] ? reply->msg : strerror(reply->error),
reply->error);
}
static void
dorename(struct vinum_rename_msg *msg, const char *oldname, const char *name, int maxlen)
{
struct _ioctl_reply *reply = (struct _ioctl_reply *) msg;
if (strlen(name) > maxlen) {
fprintf(stderr, "%s is too long\n", name);
return;
}
strcpy(msg->newname, name);
ioctl(superdev, VINUM_RENAME, msg);
if (reply->error != 0)
fprintf(stderr,
"Can't rename %s to %s: %s (%d)\n",
oldname,
name,
reply->msg[0] ? reply->msg : strerror(reply->error),
reply->error);
}
/* Rename an object:
* rename <object> "newname"
*/
void
vinum_rename_2(char *oldname, char *newname)
{
struct vinum_rename_msg msg;
int volno;
int plexno;
msg.index = find_object(oldname, &msg.type); /* find the object to rename */
msg.recurse = recurse;
/* Ugh. Determine how long the name may be */
switch (msg.type) {
case drive_object:
dorename(&msg, oldname, newname, MAXDRIVENAME);
break;
case sd_object:
dorename(&msg, oldname, newname, MAXSDNAME);
break;
case plex_object:
plexno = msg.index;
dorename(&msg, oldname, newname, MAXPLEXNAME);
if (recurse) {
int sdno;
get_plex_info(&plex, plexno); /* find out who we are */
msg.type = sd_object;
for (sdno = 0; sdno < plex.subdisks; sdno++) {
char sdname[MAXPLEXNAME + 8];
get_plex_sd_info(&sd, plex.plexno, sdno); /* get info about the subdisk */
sprintf(sdname, "%s.s%d", newname, sdno);
msg.index = sd.sdno; /* number of the subdisk */
dorename(&msg, sd.name, sdname, MAXSDNAME);
}
}
break;
case volume_object:
volno = msg.index;
dorename(&msg, oldname, newname, MAXVOLNAME);
if (recurse) {
int sdno;
int plexno;
get_volume_info(&vol, volno); /* find out who we are */
for (plexno = 0; plexno < vol.plexes; plexno++) {
char plexname[MAXVOLNAME + 8];
msg.type = plex_object;
sprintf(plexname, "%s.p%d", newname, plexno);
msg.index = vol.plex[plexno]; /* number of the plex */
dorename(&msg, plex.name, plexname, MAXPLEXNAME);
get_plex_info(&plex, vol.plex[plexno]); /* find out who we are */
msg.type = sd_object;
for (sdno = 0; sdno < plex.subdisks; sdno++) {
char sdname[MAXPLEXNAME + 8];
get_plex_sd_info(&sd, plex.plexno, sdno); /* get info about the subdisk */
sprintf(sdname, "%s.s%d", plexname, sdno);
msg.index = sd.sdno; /* number of the subdisk */
dorename(&msg, sd.name, sdname, MAXSDNAME);
}
}
}
break;
default:
fprintf(stderr, "%s is not a Vinum object\n", oldname);
return;
}
}
void
vinum_rename(int argc, char *argv[], char *argv0[])
{
if (argc != 2) {
fprintf(stderr, "Usage: \trename <object> <new name>\n");
return;
}
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
vinum_rename_2(argv[0], argv[1]);
}
#ifdef COMPLETE
/* Replace an object. Syntax and semantics TBD */
void
vinum_replace(int argc, char *argv[], char *argv0[])
{
int maxlen;
struct vinum_rename_msg msg;
struct _ioctl_reply *reply = (struct _ioctl_reply *) &msg;
if (argc != 2) {
fprintf(stderr, "Usage: \trename <object> <new name>\n");
return;
}
if (ioctl(superdev, VINUM_GETCONFIG, &vinum_conf) < 0) {
perror("Can't get vinum config");
return;
}
fprintf(stderr, "Not implemented yet\n");
}
#endif
/* Replace an object. Syntax and semantics TBD */
void
vinum_replace(int argc, char *argv[], char *argv0[])
{
fprintf(stderr, "replace function not implemented yet\n");
}
/* Primitive help function */
void
vinum_help(int argc, char *argv[], char *argv0[])
{
char commands[] =
{
"COMMANDS\n"
" create description-file\n"
" Create a volume as described in description-file\n"
" attach plex volume [rename]\n"
" attach subdisk plex [offset] [rename]\n"
" Attach a plex to a volume, or a subdisk to a plex.\n"
" debug\n"
" Cause the volume manager to enter the kernel debugger.\n"
" detach [plex | subdisk]\n"
" Detach a plex or subdisk from the volume or plex to which it is at-\n"
" tached.\n"
" info [-v]\n"
" List information about volume manager state.\n"
" init [-v]\n"
" Initialize a plex by writing zeroes to all its subdisks.\n"
" label volume\n"
" Create a volume label\n"
" list [-r] [-s] [-v] [-V] [volume | plex | subdisk]\n"
" List information about specified objects\n"
" l [-r] [-s] [-v] [-V] [volume | plex | subdisk]\n"
" List information about specified objects (alternative to\n"
" list command)\n"
" ld [-r] [-s] [-v] [-V] [volume]\n"
" List information about drives\n"
" ls [-r] [-s] [-v] [-V] [subdisk]\n"
" List information about subdisks\n"
" lp [-r] [-s] [-v] [-V] [plex]\n"
" List information about plexes\n"
" lv [-r] [-s] [-v] [-V] [volume]\n"
" List information about volumes\n"
" makedev\n"
" Remake the device nodes in /dev/vinum.\n"
" read disk-partition\n"
" Read the vinum configuration from the specified disk partition.\n"
" rename [-r] [drive | subdisk | plex | volume] newname\n"
" Change the name of the specified object.\n"
" replace [subdisk | plex] newobject\n"
" Replace the object with an identical other object. XXX not im-\n"
" plemented yet.\n"
" resetconfig\n"
" Reset the complete vinum configuration.\n"
" resetstats [-r] [volume | plex | subdisk]\n"
" Reset statistisc counters for the specified objects, or for all\n"
" objects if none are specified.\n"
" rm [-f] [-r] volume | plex | subdisk\n"
" Remove an object\n"
" setdaemon options\n"
" set the daemon options\n"
" start [volume | plex | subdisk]\n"
" Allow the system to access the objects\n"
" stop [-f] [volume | plex | subdisk]\n"
" Terminate access the objects\n"
};
puts(commands);
}
/* Set daemon options.
* XXX quick and dirty: use a bitmap, which requires
* knowing which bit does what. FIXME */
void
vinum_setdaemon(int argc, char *argv[], char *argv0[])
{
int options;
switch (argc) {
case 0:
if (ioctl(superdev, VINUM_GETDAEMON, &options) < 0)
fprintf(stderr, "Can't set daemon options: %s (%d)\n", strerror(errno), errno);
else
printf("Options mask: %d\n", options);
break;
case 1:
options = atoi(argv[0]);
if (ioctl(superdev, VINUM_SETDAEMON, &options) < 0)
fprintf(stderr, "Can't set daemon options: %s (%d)\n", strerror(errno), errno);
break;
default:
fprintf(stderr, "Usage: \tsetdaemon [<bitmask>]\n");
}
}
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