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LU-8769 lnet: removal of obsolete LNDs
[fs/lustre-release.git] / lustre / utils / lustre_lfsck.c
index a0cebe0..f399a32 100644 (file)
@@ -20,7 +20,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright (c) 2012, 2015, Intel Corporation.
+ * Copyright (c) 2012, 2016, Intel Corporation.
  */
 /*
  * lustre/utils/lustre_lfsck.c
 #include <lustre_ioctl.h>
 /* Needs to be last to avoid clashes */
 #include <libcfs/util/ioctl.h>
+#include <libcfs/util/param.h>
 
 static struct option long_opt_start[] = {
        {"device",              required_argument, 0, 'M'},
        {"all",                 no_argument,       0, 'A'},
        {"create_ostobj",       optional_argument, 0, 'c'},
+       {"create-ostobj",       optional_argument, 0, 'c'},
        {"create_mdtobj",       optional_argument, 0, 'C'},
+       {"create-mdtobj",       optional_argument, 0, 'C'},
+       {"delay_create_ostobj", optional_argument, 0, 'd'},
+       {"delay-create-ostobj", optional_argument, 0, 'd'},
        {"error",               required_argument, 0, 'e'},
        {"help",                no_argument,       0, 'h'},
        {"dryrun",              optional_argument, 0, 'n'},
@@ -60,6 +65,7 @@ static struct option long_opt_start[] = {
        {"speed",               required_argument, 0, 's'},
        {"type",                required_argument, 0, 't'},
        {"window_size",         required_argument, 0, 'w'},
+       {"window-size",         required_argument, 0, 'w'},
        {0,                     0,                 0,  0 }
 };
 
@@ -119,9 +125,10 @@ static void usage_start(void)
 {
        fprintf(stderr, "start LFSCK\n"
                "usage:\n"
-               "lfsck_start <-M | --device {MDT,OST}_device>\n"
+               "lfsck_start [-M | --device {MDT,OST}_device]\n"
                "            [-A | --all] [-c | --create_ostobj [on | off]]\n"
                "            [-C | --create_mdtobj [on | off]]\n"
+               "            [-d | --delay_create_ostobj [on | off]]\n"
                "            [-e | --error {continue | abort}] [-h | --help]\n"
                "            [-n | --dryrun [on | off]] [-o | --orphan]\n"
                "            [-r | --reset] [-s | --speed ops_per_sec_limit]\n"
@@ -129,11 +136,14 @@ static void usage_start(void)
                "            [-w | --window_size size]\n"
                "options:\n"
                "-M: device to start LFSCK/scrub on\n"
-               "-A: start LFSCK on all MDT devices\n"
+               "-A: start LFSCK on all nodes via the specified MDT device "
+                   "(see \"-M\" option) by single LFSCK command\n"
                "-c: create the lost OST-object for dangling LOV EA "
                    "(default 'off', or 'on')\n"
                "-C: create the lost MDT-object for dangling name entry "
                    "(default 'off', or 'on')\n"
+               "-d: delay create the lost OST-object for dangling LOV EA "
+                   "until orphan OST-objects handled (default 'off', or 'on')\n"
                "-e: error handle mode (default 'continue', or 'abort')\n"
                "-h: this help message\n"
                "-n: check with no modification (default 'off', or 'on')\n"
@@ -150,11 +160,12 @@ static void usage_stop(void)
 {
        fprintf(stderr, "stop LFSCK\n"
                "usage:\n"
-               "lfsck_stop <-M | --device {MDT,OST}_device>\n"
+               "lfsck_stop [-M | --device {MDT,OST}_device]\n"
                "           [-A | --all] [-h | --help]\n"
                "options:\n"
                "-M: device to stop LFSCK/scrub on\n"
-               "-A: stop LFSCK on all MDT devices\n"
+               "-A: stop LFSCK on all nodes via the specified MDT device "
+                   "(see \"-M\" option) by single LFSCK command\n"
                "-h: this help message\n");
 }
 
@@ -162,7 +173,7 @@ static void usage_query(void)
 {
        fprintf(stderr, "check the LFSCK global status\n"
                "usage:\n"
-               "lfsck_query <-M | --device MDT_device> [-h | --help]\n"
+               "lfsck_query [-M | --device MDT_device] [-h | --help]\n"
                "            [-t | --type check_type[,check_type...]]\n"
                "            [-t | --wait]\n"
                "options:\n"
@@ -189,13 +200,87 @@ static int lfsck_pack_dev(struct obd_ioctl_data *data, char *device, char *arg)
        return 0;
 }
 
+static int lfsck_get_dev_name(struct obd_ioctl_data *data, char *device,
+                             int types, bool multipe_devices)
+{
+       glob_t param = { 0 };
+       char *ptr;
+       int rc;
+       int i;
+
+       rc = cfs_get_param_paths(&param, "mdd/*-MDT*");
+       if (rc) {
+               if (multipe_devices || errno != ENOENT ||
+                   types & LFSCK_TYPE_NAMESPACE) {
+                       fprintf(stderr, "Fail to get device name: rc = %d\n."
+                               "You can specify the device explicitly "
+                               "via '-M' option.\n", rc);
+                       return rc;
+               }
+
+               rc = cfs_get_param_paths(&param, "obdfilter/*-OST*");
+               if (rc) {
+                       fprintf(stderr, "Fail to get device name: rc = %d\n."
+                               "You can specify the device explicitly "
+                               "via '-M' option.\n", rc);
+                       return rc;
+               }
+       }
+
+       if (param.gl_pathc == 1)
+               goto pack;
+
+       if (!multipe_devices) {
+               fprintf(stderr,
+                       "Detect multiple devices on current node. "
+                       "Please specify the device explicitly "
+                       "via '-M' option or '-A' option for all.\n");
+               rc = -EINVAL;
+               goto out;
+       }
+
+       ptr = strrchr(param.gl_pathv[0], '-');
+       if (ptr == NULL) {
+               rc = -EINVAL;
+               goto out;
+       }
+
+       for (i = 1; i < param.gl_pathc; i++) {
+               char *ptr2 = strrchr(param.gl_pathv[i], '-');
+
+               if (ptr2 == NULL) {
+                       rc = -EINVAL;
+                       goto out;
+               }
+
+               if ((ptr - param.gl_pathv[0]) != (ptr2 - param.gl_pathv[i]) ||
+                   strncmp(param.gl_pathv[0], param.gl_pathv[i],
+                           (ptr - param.gl_pathv[0])) != 0) {
+                       fprintf(stderr,
+                               "Detect multiple filesystems on current node. "
+                               "Please specify the device explicitly "
+                               "via '-M' option.\n");
+                       rc = -EINVAL;
+                       goto out;
+               }
+       }
+
+pack:
+       rc = lfsck_pack_dev(data, device, basename(param.gl_pathv[0]));
+
+out:
+       cfs_free_param_data(&param);
+
+       return rc;
+}
+
 int jt_lfsck_start(int argc, char **argv)
 {
        struct obd_ioctl_data data;
        char rawbuf[MAX_IOC_BUFLEN], *buf = rawbuf;
        char device[MAX_OBD_NAME];
        struct lfsck_start start;
-       char *optstring = "Ac::C::e:hM:n::ors:t:w:";
+       char *optstring = "Ac::C::d::e:hM:n::ors:t:w:";
        int opt, index, rc, val, i;
 
        memset(&data, 0, sizeof(data));
@@ -239,6 +324,19 @@ int jt_lfsck_start(int argc, char **argv)
                        }
                        start.ls_valid |= LSV_CREATE_MDTOBJ;
                        break;
+               case 'd':
+                       if (optarg == NULL || strcmp(optarg, "on") == 0) {
+                               start.ls_flags |= LPF_DELAY_CREATE_OSTOBJ;
+                       } else if (strcmp(optarg, "off") != 0) {
+                               fprintf(stderr, "invalid switch: -c '%s'. "
+                                       "valid switches are:\n"
+                                       "empty ('on'), or 'off' without space. "
+                                       "For example:\n"
+                                       "'-c', '-con', '-coff'\n", optarg);
+                               return -EINVAL;
+                       }
+                       start.ls_valid |= LSV_DELAY_CREATE_OSTOBJ;
+                       break;
                case 'e':
                        if (strcmp(optarg, "abort") == 0) {
                                start.ls_flags |= LPF_FAILOUT;
@@ -330,15 +428,10 @@ bad_type:
                start.ls_active = LFSCK_TYPES_DEF;
 
        if (data.ioc_inlbuf4 == NULL) {
-               if (lcfg_get_devname() != NULL) {
-                       rc = lfsck_pack_dev(&data, device, lcfg_get_devname());
-                       if (rc != 0)
-                               return rc;
-               } else {
-                       fprintf(stderr,
-                               "Must specify device to start LFSCK.\n");
-                       return -EINVAL;
-               }
+               rc = lfsck_get_dev_name(&data, device, start.ls_active,
+                                       start.ls_flags & LPF_ALL_TGT);
+               if (rc != 0)
+                       return rc;
        }
 
        data.ioc_inlbuf1 = (char *)&start;
@@ -408,15 +501,10 @@ int jt_lfsck_stop(int argc, char **argv)
        }
 
        if (data.ioc_inlbuf4 == NULL) {
-               if (lcfg_get_devname() != NULL) {
-                       rc = lfsck_pack_dev(&data, device, lcfg_get_devname());
-                       if (rc != 0)
-                               return rc;
-               } else {
-                       fprintf(stderr,
-                               "Must specify device to stop LFSCK.\n");
-                       return -EINVAL;
-               }
+               rc = lfsck_get_dev_name(&data, device, 0,
+                                       stop.ls_flags & LPF_ALL_TGT);
+               if (rc != 0)
+                       return rc;
        }
 
        data.ioc_inlbuf1 = (char *)&stop;
@@ -491,15 +579,9 @@ bad_type:
        }
 
        if (data.ioc_inlbuf4 == NULL) {
-               if (lcfg_get_devname() != NULL) {
-                       rc = lfsck_pack_dev(&data, device, lcfg_get_devname());
-                       if (rc != 0)
-                               return rc;
-               } else {
-                       fprintf(stderr,
-                               "Must specify device to query LFSCK.\n");
-                       return -EINVAL;
-               }
+               rc = lfsck_get_dev_name(&data, device, 0, true);
+               if (rc != 0)
+                       return rc;
        }
 
        data.ioc_inlbuf1 = (char *)&query;