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LU-4293 utils: handle lfs migrate failure in lfs_migrate
[fs/lustre-release.git] / lustre / utils / lfs.c
index 0cfe790..614fbc3 100644 (file)
@@ -51,6 +51,7 @@
 #include <string.h>
 #include <mntent.h>
 #include <errno.h>
+#include <err.h>
 #include <pwd.h>
 #include <grp.h>
 #include <sys/types.h>
@@ -246,7 +247,8 @@ command_t cmdlist[] = {
         "      while many targets still have 1MB or 1K inodes of spare\n"
         "      quota space."},
         {"quota", lfs_quota, 0, "Display disk usage and limits.\n"
-         "usage: quota [-q] [-v] [-o <obd_uuid>|-i <mdt_idx>|-I <ost_idx>]\n"
+        "usage: quota [-q] [-v] [-h] [-o <obd_uuid>|-i <mdt_idx>|-I "
+                      "<ost_idx>]\n"
          "             [<-u|-g> <uname>|<uid>|<gname>|<gid>] <filesystem>\n"
          "       quota [-o <obd_uuid>|-i <mdt_idx>|-I <ost_idx>] -t <-u|-g> <filesystem>"},
 #endif
@@ -287,7 +289,7 @@ command_t cmdlist[] = {
        {"path2fid", lfs_path2fid, 0, "Display the fid(s) for a given path(s).\n"
         "usage: path2fid <path> ..."},
        {"data_version", lfs_data_version, 0, "Display file data version for "
-        "a given path.\n" "usage: data_version [-n] <path>"},
+        "a given path.\n" "usage: data_version -[n|r|w] <path>"},
        {"hsm_state", lfs_hsm_state, 0, "Display the HSM information (states, "
         "undergoing actions) for given files.\n usage: hsm_state <file> ..."},
        {"hsm_set", lfs_hsm_set, 0, "Set HSM user flag on specified files.\n"
@@ -407,7 +409,11 @@ static int lfs_migrate(char *name, unsigned long long stripe_size,
        }
 
        /* search for file directory pathname */
-       strcpy(parent, name);
+       if (strlen(name) > sizeof(parent)-1) {
+               rc = -E2BIG;
+               goto free;
+       }
+       strncpy(parent, name, sizeof(parent));
        ptr = strrchr(parent, '/');
        if (ptr == NULL) {
                if (getcwd(parent, sizeof(parent)) == NULL) {
@@ -447,7 +453,7 @@ static int lfs_migrate(char *name, unsigned long long stripe_size,
        }
 
        /* get file data version */
-       rc = llapi_get_data_version(fd, &dv1, 0);
+       rc = llapi_get_data_version(fd, &dv1, LL_DV_RD_FLUSH);
        if (rc != 0) {
                fprintf(stderr, "cannot get dataversion on %s (%s)\n",
                        name, strerror(-rc));
@@ -527,14 +533,12 @@ static int lfs_migrate(char *name, unsigned long long stripe_size,
                                 SWAP_LAYOUTS_KEEP_MTIME |
                                 SWAP_LAYOUTS_KEEP_ATIME);
        if (rc == -EAGAIN) {
-               fprintf(stderr, "file dataversion for %s has changed"
-                               " during copy, migration is aborted\n",
-                       name);
+               fprintf(stderr, "%s: dataversion changed during copy, "
+                       "migration aborted\n", name);
                goto error;
        }
        if (rc != 0)
-               fprintf(stderr, "cannot swap layouts between %s and "
-                       "a volatile file (%s)\n",
+               fprintf(stderr, "%s: swap layout to new file failed: %s\n",
                        name, strerror(-rc));
 
 error:
@@ -1115,20 +1119,24 @@ static int lfs_find(int argc, char **argv)
                                 param.obduuid = tmp;
                         }
                         for (token = buf; token && *token; token = next) {
-                                char *uuid;
-                                if (c == 'm')
-                                        uuid =
-                                          param.mdtuuid[param.num_mdts++].uuid;
-                                else
-                                        uuid =
-                                          param.obduuid[param.num_obds++].uuid;
+                               struct obd_uuid *puuid;
+                               if (c == 'm') {
+                                       puuid =
+                                         &param.mdtuuid[param.num_mdts++];
+                               } else {
+                                       puuid =
+                                         &param.obduuid[param.num_obds++];
+                               }
                                 p = strchr(token, ',');
                                 next = 0;
                                 if (p) {
                                         *p = 0;
                                         next = p+1;
                                 }
-                                strcpy((char *)uuid, token);
+                               if (strlen(token) > sizeof(puuid->uuid)-1)
+                                       GOTO(err_free, ret = -E2BIG);
+                               strncpy(puuid->uuid, token,
+                                       sizeof(puuid->uuid));
                         }
 err_free:
                         if (buf)
@@ -2517,26 +2525,47 @@ static void diff2str(time_t seconds, char *buf, time_t now)
         __sec2str(seconds - now, buf);
 }
 
-static void print_quota_title(char *name, struct if_quotactl *qctl)
+static void print_quota_title(char *name, struct if_quotactl *qctl,
+                             bool human_readable)
 {
-        printf("Disk quotas for %s %s (%cid %u):\n",
-               type2name(qctl->qc_type), name,
-               *type2name(qctl->qc_type), qctl->qc_id);
-        printf("%15s%8s %7s%8s%8s%8s %7s%8s%8s\n",
-               "Filesystem",
-               "kbytes", "quota", "limit", "grace",
-               "files", "quota", "limit", "grace");
+       printf("Disk quotas for %s %s (%cid %u):\n",
+              type2name(qctl->qc_type), name,
+              *type2name(qctl->qc_type), qctl->qc_id);
+       printf("%15s%8s %7s%8s%8s%8s %7s%8s%8s\n",
+              "Filesystem", human_readable ? "used" : "kbytes",
+              "quota", "limit", "grace",
+              "files", "quota", "limit", "grace");
 }
 
-static void print_quota(char *mnt, struct if_quotactl *qctl, int type, int rc)
+static void kbytes2str(__u64 num, char *buf, bool h)
+{
+       if (!h) {
+               sprintf(buf, LPU64, num);
+       } else {
+               if (num >> 30)
+                       sprintf(buf, LPU64"%s", num >> 30, "T");
+               else if (num >> 20)
+                       sprintf(buf, LPU64"%s", num >> 20, "G");
+               else if (num >> 10)
+                       sprintf(buf, LPU64"%s", num >> 10, "M");
+               else
+                       sprintf(buf, LPU64"%s", num, "K");
+       }
+}
+
+static void print_quota(char *mnt, struct if_quotactl *qctl, int type,
+                       int rc, bool h)
 {
         time_t now;
 
         time(&now);
 
         if (qctl->qc_cmd == LUSTRE_Q_GETQUOTA || qctl->qc_cmd == Q_GETOQUOTA) {
-                int bover = 0, iover = 0;
-                struct obd_dqblk *dqb = &qctl->qc_dqblk;
+               int bover = 0, iover = 0;
+               struct obd_dqblk *dqb = &qctl->qc_dqblk;
+               char numbuf[3][32];
+               char timebuf[40];
+               char strbuf[32];
 
                 if (dqb->dqb_bhardlimit &&
                     toqb(dqb->dqb_curspace) >= dqb->dqb_bhardlimit) {
@@ -2560,61 +2589,60 @@ static void print_quota(char *mnt, struct if_quotactl *qctl, int type, int rc)
                        }
                 }
 
-#if 0           /* XXX: always print quotas even when no usages */
-                if (dqb->dqb_curspace || dqb->dqb_curinodes)
-#endif
-                {
-                        char numbuf[3][32];
-                        char timebuf[40];
 
-                        if (strlen(mnt) > 15)
-                                printf("%s\n%15s", mnt, "");
-                        else
-                                printf("%15s", mnt);
+               if (strlen(mnt) > 15)
+                       printf("%s\n%15s", mnt, "");
+               else
+                       printf("%15s", mnt);
+
+               if (bover)
+                       diff2str(dqb->dqb_btime, timebuf, now);
+
+               kbytes2str(toqb(dqb->dqb_curspace), strbuf, h);
+               if (rc == -EREMOTEIO)
+                       sprintf(numbuf[0], "%s*", strbuf);
+               else
+                       sprintf(numbuf[0], (dqb->dqb_valid & QIF_SPACE) ?
+                               "%s" : "[%s]", strbuf);
+
+               kbytes2str(dqb->dqb_bsoftlimit, strbuf, h);
+               if (type == QC_GENERAL)
+                       sprintf(numbuf[1], (dqb->dqb_valid & QIF_BLIMITS) ?
+                               "%s" : "[%s]", strbuf);
+               else
+                       sprintf(numbuf[1], "%s", "-");
+
+               kbytes2str(dqb->dqb_bhardlimit, strbuf, h);
+               sprintf(numbuf[2], (dqb->dqb_valid & QIF_BLIMITS) ?
+                       "%s" : "[%s]", strbuf);
+
+               printf(" %7s%c %6s %7s %7s",
+                      numbuf[0], bover ? '*' : ' ', numbuf[1],
+                      numbuf[2], bover > 1 ? timebuf : "-");
+
+               if (iover)
+                       diff2str(dqb->dqb_itime, timebuf, now);
+
+               sprintf(numbuf[0], (dqb->dqb_valid & QIF_INODES) ?
+                       LPU64 : "["LPU64"]", dqb->dqb_curinodes);
+
+               if (type == QC_GENERAL)
+                       sprintf(numbuf[1], (dqb->dqb_valid & QIF_ILIMITS) ?
+                               LPU64 : "["LPU64"]", dqb->dqb_isoftlimit);
+               else
+                       sprintf(numbuf[1], "%s", "-");
+
+               sprintf(numbuf[2], (dqb->dqb_valid & QIF_ILIMITS) ?
+                       LPU64 : "["LPU64"]", dqb->dqb_ihardlimit);
+
+               if (type != QC_OSTIDX)
+                       printf(" %7s%c %6s %7s %7s",
+                              numbuf[0], iover ? '*' : ' ', numbuf[1],
+                              numbuf[2], iover > 1 ? timebuf : "-");
+               else
+                       printf(" %7s %7s %7s %7s", "-", "-", "-", "-");
+               printf("\n");
 
-                        if (bover)
-                                diff2str(dqb->dqb_btime, timebuf, now);
-                        if (rc == -EREMOTEIO)
-                                sprintf(numbuf[0], LPU64"*",
-                                        toqb(dqb->dqb_curspace));
-                        else
-                                sprintf(numbuf[0],
-                                        (dqb->dqb_valid & QIF_SPACE) ?
-                                        LPU64 : "["LPU64"]",
-                                        toqb(dqb->dqb_curspace));
-                        if (type == QC_GENERAL)
-                                sprintf(numbuf[1], (dqb->dqb_valid & QIF_BLIMITS)
-                                        ? LPU64 : "["LPU64"]",
-                                        dqb->dqb_bsoftlimit);
-                        else
-                                sprintf(numbuf[1], "%s", "-");
-                        sprintf(numbuf[2], (dqb->dqb_valid & QIF_BLIMITS)
-                                ? LPU64 : "["LPU64"]", dqb->dqb_bhardlimit);
-                        printf(" %7s%c %6s %7s %7s",
-                               numbuf[0], bover ? '*' : ' ', numbuf[1],
-                               numbuf[2], bover > 1 ? timebuf : "-");
-
-                        if (iover)
-                                diff2str(dqb->dqb_itime, timebuf, now);
-
-                        sprintf(numbuf[0], (dqb->dqb_valid & QIF_INODES) ?
-                                LPU64 : "["LPU64"]", dqb->dqb_curinodes);
-                       if (type == QC_GENERAL)
-                                sprintf(numbuf[1], (dqb->dqb_valid & QIF_ILIMITS)
-                                        ? LPU64 : "["LPU64"]",
-                                        dqb->dqb_isoftlimit);
-                        else
-                                sprintf(numbuf[1], "%s", "-");
-                        sprintf(numbuf[2], (dqb->dqb_valid & QIF_ILIMITS) ?
-                                LPU64 : "["LPU64"]", dqb->dqb_ihardlimit);
-                        if (type != QC_OSTIDX)
-                                printf(" %7s%c %6s %7s %7s",
-                                       numbuf[0], iover ? '*' : ' ', numbuf[1],
-                                       numbuf[2], iover > 1 ? timebuf : "-");
-                        else
-                                printf(" %7s %7s %7s %7s", "-", "-", "-", "-");
-                        printf("\n");
-                }
         } else if (qctl->qc_cmd == LUSTRE_Q_GETINFO ||
                    qctl->qc_cmd == Q_GETOINFO) {
                 char bgtimebuf[40];
@@ -2627,7 +2655,8 @@ static void print_quota(char *mnt, struct if_quotactl *qctl, int type, int rc)
         }
 }
 
-static int print_obd_quota(char *mnt, struct if_quotactl *qctl, int is_mdt)
+static int print_obd_quota(char *mnt, struct if_quotactl *qctl, int is_mdt,
+                          bool h, __u64 *total)
 {
         int rc = 0, rc1 = 0, count = 0;
         __u32 valid = qctl->qc_valid;
@@ -2656,29 +2685,33 @@ static int print_obd_quota(char *mnt, struct if_quotactl *qctl, int is_mdt)
                         continue;
                 }
 
-                print_quota(obd_uuid2str(&qctl->obd_uuid), qctl, qctl->qc_valid, 0);
-        }
-
+               print_quota(obd_uuid2str(&qctl->obd_uuid), qctl,
+                           qctl->qc_valid, 0, h);
+               *total += is_mdt ? qctl->qc_dqblk.dqb_ihardlimit :
+                                  qctl->qc_dqblk.dqb_bhardlimit;
+       }
 out:
-        qctl->qc_valid = valid;
-        return rc ? : rc1;
+       qctl->qc_valid = valid;
+       return rc ? : rc1;
 }
 
 static int lfs_quota(int argc, char **argv)
 {
-        int c;
-        char *mnt, *name = NULL;
-        struct if_quotactl qctl = { .qc_cmd = LUSTRE_Q_GETQUOTA,
-                                    .qc_type = UGQUOTA };
-        char *obd_type = (char *)qctl.obd_type;
-        char *obd_uuid = (char *)qctl.obd_uuid.uuid;
-        int rc, rc1 = 0, rc2 = 0, rc3 = 0,
-            verbose = 0, pass = 0, quiet = 0, inacc;
-        char *endptr;
-        __u32 valid = QC_GENERAL, idx = 0;
+       int c;
+       char *mnt, *name = NULL;
+       struct if_quotactl qctl = { .qc_cmd = LUSTRE_Q_GETQUOTA,
+                                   .qc_type = UGQUOTA };
+       char *obd_type = (char *)qctl.obd_type;
+       char *obd_uuid = (char *)qctl.obd_uuid.uuid;
+       int rc, rc1 = 0, rc2 = 0, rc3 = 0,
+           verbose = 0, pass = 0, quiet = 0, inacc;
+       char *endptr;
+       __u32 valid = QC_GENERAL, idx = 0;
+       __u64 total_ialloc = 0, total_balloc = 0;
+       bool human_readable = false;
 
-        optind = 0;
-        while ((c = getopt(argc, argv, "gi:I:o:qtuv")) != -1) {
+       optind = 0;
+       while ((c = getopt(argc, argv, "gi:I:o:qtuvh")) != -1) {
                 switch (c) {
                 case 'u':
                         if (qctl.qc_type != UGQUOTA) {
@@ -2715,6 +2748,9 @@ static int lfs_quota(int argc, char **argv)
                 case 'q':
                         quiet = 1;
                         break;
+               case 'h':
+                       human_readable = true;
+                       break;
                 default:
                         fprintf(stderr, "error: %s: option '-%c' "
                                         "unrecognized\n", argv[0], c);
@@ -2785,8 +2821,8 @@ ug_output:
                 }
         }
 
-        if (qctl.qc_cmd == LUSTRE_Q_GETQUOTA && !quiet)
-                print_quota_title(name, &qctl);
+       if (qctl.qc_cmd == LUSTRE_Q_GETQUOTA && !quiet)
+               print_quota_title(name, &qctl, human_readable);
 
         if (rc1 && *obd_type)
                 fprintf(stderr, "%s %s ", obd_type, obd_uuid);
@@ -2794,15 +2830,24 @@ ug_output:
         if (qctl.qc_valid != QC_GENERAL)
                 mnt = "";
 
-        inacc = (qctl.qc_cmd == LUSTRE_Q_GETQUOTA) &&
-                ((qctl.qc_dqblk.dqb_valid&(QIF_LIMITS|QIF_USAGE))!=(QIF_LIMITS|QIF_USAGE));
+       inacc = (qctl.qc_cmd == LUSTRE_Q_GETQUOTA) &&
+               ((qctl.qc_dqblk.dqb_valid & (QIF_LIMITS|QIF_USAGE)) !=
+                (QIF_LIMITS|QIF_USAGE));
 
-        print_quota(mnt, &qctl, QC_GENERAL, rc1);
+       print_quota(mnt, &qctl, QC_GENERAL, rc1, human_readable);
 
-        if (qctl.qc_valid == QC_GENERAL && qctl.qc_cmd != LUSTRE_Q_GETINFO && verbose) {
-                rc2 = print_obd_quota(mnt, &qctl, 1);
-                rc3 = print_obd_quota(mnt, &qctl, 0);
-        }
+       if (qctl.qc_valid == QC_GENERAL && qctl.qc_cmd != LUSTRE_Q_GETINFO &&
+           verbose) {
+               char strbuf[32];
+
+               kbytes2str(total_balloc, strbuf, human_readable);
+               rc2 = print_obd_quota(mnt, &qctl, 1, human_readable,
+                                     &total_ialloc);
+               rc3 = print_obd_quota(mnt, &qctl, 0, human_readable,
+                                     &total_balloc);
+               printf("Total allocated inode limit: "LPU64", total "
+                      "allocated block limit: %s\n", total_ialloc, strbuf);
+       }
 
         if (rc1 || rc2 || rc3 || inacc)
                 printf("Some errors happened when getting quota info. "
@@ -3178,46 +3223,47 @@ out:
 
 static int lfs_data_version(int argc, char **argv)
 {
-        char *path;
-        __u64 data_version;
-        int fd;
-        int rc;
-        int c;
-        int nolock = 0;
+       char *path;
+       __u64 data_version;
+       int fd;
+       int rc;
+       int c;
+       int data_version_flags = LL_DV_RD_FLUSH; /* Read by default */
 
-        if (argc < 2)
-                return CMD_HELP;
+       if (argc < 2)
+               return CMD_HELP;
 
-        optind = 0;
-        while ((c = getopt(argc, argv, "n")) != -1) {
-                switch (c) {
-                case 'n':
-                        nolock = LL_DV_NOFLUSH;
-                        break;
-                default:
-                        return CMD_HELP;
-                }
-        }
-        if (optind == argc)
-                return CMD_HELP;
+       optind = 0;
+       while ((c = getopt(argc, argv, "nrw")) != -1) {
+               switch (c) {
+               case 'n':
+                       data_version_flags = 0;
+                       break;
+               case 'r':
+                       data_version_flags |= LL_DV_RD_FLUSH;
+                       break;
+               case 'w':
+                       data_version_flags |= LL_DV_WR_FLUSH;
+                       break;
+               default:
+                       return CMD_HELP;
+               }
+       }
+       if (optind == argc)
+               return CMD_HELP;
 
-        path = argv[optind];
-        fd = open(path, O_RDONLY);
-        if (fd < 0) {
-                fprintf(stderr, "can't open %s: %s\n", path,
-                        strerror(errno));
-                return errno;
-        }
+       path = argv[optind];
+       fd = open(path, O_RDONLY);
+       if (fd < 0)
+               err(errno, "cannot open file %s", path);
 
-        rc = llapi_get_data_version(fd, &data_version, nolock);
-        if (rc) {
-                fprintf(stderr, "can't get version for %s: %s\n", path,
-                        strerror(errno = -rc));
-       } else
+       rc = llapi_get_data_version(fd, &data_version, data_version_flags);
+       if (rc < 0)
+               err(errno, "cannot get version for %s", path);
+       else
                printf(LPU64 "\n", data_version);
 
        close(fd);
-
        return rc;
 }
 
@@ -3530,8 +3576,13 @@ static int lfs_hsm_request(int argc, char **argv, int action)
        hur->hur_request.hr_flags = 0;
 
        /* All remaining args are files, add them */
-       if (nbfile != 0)
-               strcpy(some_file, argv[optind]);
+       if (nbfile != 0) {
+               if (strlen(argv[optind]) > sizeof(some_file)-1) {
+                       free(hur);
+                       return -E2BIG;
+               }
+               strncpy(some_file, argv[optind], sizeof(some_file));
+       }
 
        for (i = 0; i < nbfile; i++) {
                hur->hur_user_item[i].hui_extent.length = -1;