This command allows a sysadmin to display or modify the pnfsd.dsfile extended attribute used by the pNFS MDS server in various ways. Its main use is to set a DS's IP address to 0.0.0.0 when that DS has failed, so that it will not be used for the file when brought back online after being repaired.
331 lines
9.3 KiB
C
331 lines
9.3 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2017 Rick Macklem
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR 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.
|
|
*
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <err.h>
|
|
#include <getopt.h>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/param.h>
|
|
#include <sys/extattr.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <fs/nfs/nfskpiport.h>
|
|
#include <fs/nfs/nfsproto.h>
|
|
#include <fs/nfs/nfs.h>
|
|
#include <fs/nfs/nfsrvstate.h>
|
|
|
|
static void usage(void);
|
|
|
|
static struct option longopts[] = {
|
|
{ "changeds", required_argument, NULL, 'c' },
|
|
{ "quiet", no_argument, NULL, 'q' },
|
|
{ "zerods", required_argument, NULL, 'r' },
|
|
{ "ds", required_argument, NULL, 's' },
|
|
{ "zerofh", no_argument, NULL, 'z' },
|
|
{ NULL, 0, NULL, 0 }
|
|
};
|
|
|
|
/*
|
|
* This program displays the location information of a data storage file
|
|
* for a given file on a MetaData Server (MDS) in a pNFS service. This program
|
|
* must be run on the MDS and the file argument must be a file in a local
|
|
* file system that has been exported for the pNFS service.
|
|
*/
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct addrinfo *res, *ad, *newres;
|
|
struct sockaddr_in *sin, adsin;
|
|
struct sockaddr_in6 *sin6, adsin6;
|
|
char hostn[2 * NI_MAXHOST + 2], *cp;
|
|
struct pnfsdsfile dsfile[NFSDEV_MAXMIRRORS];
|
|
int ch, dosetxattr, i, mirrorcnt, quiet, zerods, zerofh;
|
|
in_port_t tport;
|
|
ssize_t xattrsize, xattrsize2;
|
|
|
|
zerods = 0;
|
|
zerofh = 0;
|
|
quiet = 0;
|
|
dosetxattr = 0;
|
|
res = NULL;
|
|
newres = NULL;
|
|
cp = NULL;
|
|
while ((ch = getopt_long(argc, argv, "c:qr:s:z", longopts, NULL)) != -1)
|
|
{
|
|
switch (ch) {
|
|
case 'c':
|
|
/* Replace the first DS server with the second one. */
|
|
if (zerofh != 0 || zerods != 0)
|
|
errx(1, "-c, -r and -z are mutually "
|
|
"exclusive");
|
|
if (res != NULL)
|
|
errx(1, "-c and -s are mutually exclusive");
|
|
strlcpy(hostn, optarg, 2 * NI_MAXHOST + 2);
|
|
cp = strchr(hostn, ',');
|
|
if (cp == NULL)
|
|
errx(1, "Bad -c argument %s", hostn);
|
|
*cp = '\0';
|
|
if (getaddrinfo(hostn, NULL, NULL, &res) != 0)
|
|
errx(1, "Can't get IP# for %s", hostn);
|
|
*cp++ = ',';
|
|
if (getaddrinfo(cp, NULL, NULL, &newres) != 0)
|
|
errx(1, "Can't get IP# for %s", cp);
|
|
break;
|
|
case 'q':
|
|
quiet = 1;
|
|
break;
|
|
case 'r':
|
|
/* Reset the DS server in a mirror with 0.0.0.0. */
|
|
if (zerofh != 0 || res != NULL || newres != NULL)
|
|
errx(1, "-r and -s, -z or -c are mutually "
|
|
"exclusive");
|
|
zerods = 1;
|
|
/* Translate the server name to an IP address. */
|
|
if (getaddrinfo(optarg, NULL, NULL, &res) != 0)
|
|
errx(1, "Can't get IP# for %s", optarg);
|
|
break;
|
|
case 's':
|
|
if (res != NULL)
|
|
errx(1, "-s, -c and -r are mutually "
|
|
"exclusive");
|
|
/* Translate the server name to an IP address. */
|
|
if (getaddrinfo(optarg, NULL, NULL, &res) != 0)
|
|
errx(1, "Can't get IP# for %s", optarg);
|
|
break;
|
|
case 'z':
|
|
if (newres != NULL || zerods != 0)
|
|
errx(1, "-c, -r and -z are mutually "
|
|
"exclusive");
|
|
zerofh = 1;
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc -= optind;
|
|
if (argc != 1)
|
|
usage();
|
|
argv += optind;
|
|
|
|
/*
|
|
* The host address and directory where the data storage file is
|
|
* located is in the extended attribute "pnfsd.dsfile".
|
|
*/
|
|
xattrsize = extattr_get_file(*argv, EXTATTR_NAMESPACE_SYSTEM,
|
|
"pnfsd.dsfile", dsfile, sizeof(dsfile));
|
|
mirrorcnt = xattrsize / sizeof(struct pnfsdsfile);
|
|
xattrsize2 = mirrorcnt * sizeof(struct pnfsdsfile);
|
|
if (mirrorcnt < 1 || xattrsize != xattrsize2)
|
|
err(1, "Can't get extattr pnfsd.dsfile for %s", *argv);
|
|
|
|
if (quiet == 0)
|
|
printf("%s:\t", *argv);
|
|
for (i = 0; i < mirrorcnt; i++) {
|
|
if (i > 0 && quiet == 0)
|
|
printf("\t");
|
|
/* Do the zerofh option. You must be root. */
|
|
if (zerofh != 0) {
|
|
if (geteuid() != 0)
|
|
errx(1, "Must be root/su to zerofh");
|
|
|
|
/*
|
|
* Do it for the server specified by -s/--ds or all
|
|
* servers, if -s/--ds was not specified.
|
|
*/
|
|
sin = &dsfile[i].dsf_sin;
|
|
sin6 = &dsfile[i].dsf_sin6;
|
|
ad = res;
|
|
while (ad != NULL) {
|
|
if (ad->ai_addr->sa_family == AF_INET &&
|
|
sin->sin_family == AF_INET &&
|
|
ad->ai_addrlen >= sizeof(adsin)) {
|
|
memcpy(&adsin, ad->ai_addr,
|
|
sizeof(adsin));
|
|
if (sin->sin_addr.s_addr ==
|
|
adsin.sin_addr.s_addr)
|
|
break;
|
|
}
|
|
if (ad->ai_addr->sa_family == AF_INET6 &&
|
|
sin6->sin6_family == AF_INET6 &&
|
|
ad->ai_addrlen >= sizeof(adsin6)) {
|
|
memcpy(&adsin6, ad->ai_addr,
|
|
sizeof(adsin6));
|
|
if (IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr,
|
|
&adsin6.sin6_addr))
|
|
break;
|
|
}
|
|
ad = ad->ai_next;
|
|
}
|
|
if (res == NULL || ad != NULL) {
|
|
memset(&dsfile[i].dsf_fh, 0, sizeof(fhandle_t));
|
|
dosetxattr = 1;
|
|
}
|
|
}
|
|
|
|
/* Do the zerods option. You must be root. */
|
|
if (zerods != 0 && mirrorcnt > 1) {
|
|
if (geteuid() != 0)
|
|
errx(1, "Must be root/su to zerods");
|
|
|
|
/*
|
|
* Do it for the server specified.
|
|
*/
|
|
sin = &dsfile[i].dsf_sin;
|
|
sin6 = &dsfile[i].dsf_sin6;
|
|
ad = res;
|
|
while (ad != NULL) {
|
|
if (ad->ai_addr->sa_family == AF_INET &&
|
|
sin->sin_family == AF_INET &&
|
|
ad->ai_addrlen >= sizeof(adsin)) {
|
|
memcpy(&adsin, ad->ai_addr,
|
|
sizeof(adsin));
|
|
if (sin->sin_addr.s_addr ==
|
|
adsin.sin_addr.s_addr)
|
|
break;
|
|
}
|
|
if (ad->ai_addr->sa_family == AF_INET6 &&
|
|
sin6->sin6_family == AF_INET6 &&
|
|
ad->ai_addrlen >= sizeof(adsin6)) {
|
|
memcpy(&adsin6, ad->ai_addr,
|
|
sizeof(adsin6));
|
|
if (IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr,
|
|
&adsin6.sin6_addr))
|
|
break;
|
|
}
|
|
ad = ad->ai_next;
|
|
}
|
|
if (ad != NULL) {
|
|
sin->sin_family = AF_INET;
|
|
sin->sin_len = sizeof(*sin);
|
|
sin->sin_port = 0;
|
|
sin->sin_addr.s_addr = 0;
|
|
dosetxattr = 1;
|
|
}
|
|
}
|
|
|
|
/* Do the -c option to replace the DS host address. */
|
|
if (newres != NULL) {
|
|
if (geteuid() != 0)
|
|
errx(1, "Must be root/su to replace the host"
|
|
" addr");
|
|
|
|
/*
|
|
* Check that the old host address matches.
|
|
*/
|
|
sin = &dsfile[i].dsf_sin;
|
|
sin6 = &dsfile[i].dsf_sin6;
|
|
ad = res;
|
|
while (ad != NULL) {
|
|
if (ad->ai_addr->sa_family == AF_INET &&
|
|
sin->sin_family == AF_INET &&
|
|
ad->ai_addrlen >= sizeof(adsin)) {
|
|
memcpy(&adsin, ad->ai_addr,
|
|
sizeof(adsin));
|
|
if (sin->sin_addr.s_addr ==
|
|
adsin.sin_addr.s_addr)
|
|
break;
|
|
}
|
|
if (ad->ai_addr->sa_family == AF_INET6 &&
|
|
sin6->sin6_family == AF_INET6 &&
|
|
ad->ai_addrlen >= sizeof(adsin6)) {
|
|
memcpy(&adsin6, ad->ai_addr,
|
|
sizeof(adsin6));
|
|
if (IN6_ARE_ADDR_EQUAL(&sin6->sin6_addr,
|
|
&adsin6.sin6_addr))
|
|
break;
|
|
}
|
|
ad = ad->ai_next;
|
|
}
|
|
if (ad != NULL) {
|
|
if (sin->sin_family == AF_INET)
|
|
tport = sin->sin_port;
|
|
else
|
|
tport = sin6->sin6_port;
|
|
/*
|
|
* We have a match, so replace it with the first
|
|
* AF_INET or AF_INET6 address in the newres
|
|
* list.
|
|
*/
|
|
while (newres->ai_addr->sa_family != AF_INET &&
|
|
newres->ai_addr->sa_family != AF_INET6) {
|
|
newres = newres->ai_next;
|
|
if (newres == NULL)
|
|
errx(1, "Hostname %s has no"
|
|
" IP#", cp);
|
|
}
|
|
if (newres->ai_addr->sa_family == AF_INET) {
|
|
memcpy(sin, newres->ai_addr,
|
|
sizeof(*sin));
|
|
sin->sin_port = tport;
|
|
} else if (newres->ai_addr->sa_family ==
|
|
AF_INET6) {
|
|
memcpy(sin6, newres->ai_addr,
|
|
sizeof(*sin6));
|
|
sin6->sin6_port = tport;
|
|
}
|
|
dosetxattr = 1;
|
|
}
|
|
}
|
|
|
|
if (quiet == 0) {
|
|
/* Translate the IP address to a hostname. */
|
|
if (getnameinfo((struct sockaddr *)&dsfile[i].dsf_sin,
|
|
dsfile[i].dsf_sin.sin_len, hostn, sizeof(hostn),
|
|
NULL, 0, 0) < 0)
|
|
err(1, "Can't get hostname");
|
|
printf("%s\tds%d/%s", hostn, dsfile[i].dsf_dir,
|
|
dsfile[i].dsf_filename);
|
|
}
|
|
}
|
|
if (quiet == 0)
|
|
printf("\n");
|
|
if (dosetxattr != 0 && extattr_set_file(*argv, EXTATTR_NAMESPACE_SYSTEM,
|
|
"pnfsd.dsfile", dsfile, xattrsize) != xattrsize)
|
|
err(1, "Can't set pnfsd.dsfile");
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr, "pnfsdsfile [-q/--quiet] [-z/--zerofh] "
|
|
"[-c/--changeds <old dshostname> <new dshostname>] "
|
|
"[-r/--zerods <dshostname>] "
|
|
"[-s/--ds <dshostname>] "
|
|
"<filename>\n");
|
|
exit(1);
|
|
}
|
|
|