--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.htm
+ *
+ * GPL HEADER END
+ */
+/*
+ * (C) Copyright 2012 Commissariat a l'energie atomique et aux energies
+ * alternatives
+ *
+ */
+/* HSM copytool program for POSIX filesystem-based HSM's.
+ *
+ * An HSM copytool daemon acts on action requests from Lustre to copy files
+ * to and from an HSM archive system. This one in particular makes regular
+ * POSIX filesystem calls to a given path, where an HSM is presumably mounted.
+ *
+ * This particular tool can also import an existing HSM archive.
+ */
+
+#include <utime.h>
+#include <sys/xattr.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <sys/errno.h>
+#include <lustre/lustre_idl.h>
+#include <lustre/lustreapi.h>
+
+/* Progress reporting period */
+#define REPORT_INTERVAL_DEFAULT 30
+/* HSM hash subdir permissions */
+#define DIR_PERM S_IRWXU
+/* HSM hash file permissions */
+#define FILE_PERM (S_IRUSR | S_IWUSR)
+
+#define ONE_MB 0x100000
+
+/* copytool uses a 32b bitmask field to register with kuc
+ * archive num = 0 => all
+ * archive num from 1 to 32
+ */
+#define MAX_ARCHIVE_CNT (sizeof(__u32) * 8)
+
+enum ct_action {
+ CA_IMPORT = 1,
+ CA_REBIND,
+ CA_MAXSEQ,
+ CA_DAEMON,
+};
+
+struct options {
+ int o_copy_attrs;
+ int o_dry_run;
+ int o_abort_on_error;
+ int o_shadow_tree;
+ int o_verbose;
+ int o_copy_xattrs;
+ int o_archive_cnt;
+ int o_archive_id[MAX_ARCHIVE_CNT];
+ int o_report_int;
+ unsigned long long o_bandwidth;
+ size_t o_chunk_size;
+ enum ct_action o_action;
+ char *o_mnt;
+ char *o_hsm_root;
+ char *o_src; /* for import, or rebind */
+ char *o_dst; /* for import, or rebind */
+};
+
+/* everything else is zeroed */
+struct options opt = {
+ .o_copy_attrs = 1,
+ .o_shadow_tree = 1,
+ .o_verbose = LLAPI_MSG_WARN,
+ .o_copy_xattrs = 1,
+ .o_report_int = REPORT_INTERVAL_DEFAULT,
+ .o_chunk_size = ONE_MB,
+};
+
+/* The LLAPI will hold an open FD on lustre for us. Additionally open one on
+ * the archive FS root to make sure it doesn't drop out from under us (and
+ * remind the admin to shutdown the copytool before unmounting). */
+static int arc_fd = -1;
+
+static int err_major;
+static int err_minor;
+
+static char cmd_name[PATH_MAX];
+static char fs_name[MAX_OBD_NAME + 1];
+
+static struct hsm_copytool_private *ctdata;
+
+
+#define CT_ERROR(format, ...) \
+ llapi_printf(LLAPI_MSG_ERROR, "%s: "format, cmd_name, ## __VA_ARGS__)
+#define CT_DEBUG(format, ...) \
+ llapi_printf(LLAPI_MSG_DEBUG, "%s: "format, cmd_name, ## __VA_ARGS__)
+#define CT_WARN(format, ...) \
+ llapi_printf(LLAPI_MSG_WARN, "%s: "format, cmd_name, ## __VA_ARGS__)
+#define CT_TRACE(format, ...) \
+ llapi_printf(LLAPI_MSG_INFO, "%s: "format, cmd_name, ## __VA_ARGS__)
+
+static void usage(const char *name, int rc)
+{
+ fprintf(stdout,
+ " Usage: %s [options]... <mode> <lustre_mount_point>\n"
+ "The Lustre HSM Posix copy tool can be used as a daemon or "
+ "as a command line tool\n"
+ "The Lustre HSM daemon acts on action requests from Lustre\n"
+ "to copy files to and from an HSM archive system.\n"
+ "This POSIX-flavored daemon makes regular POSIX filesystem calls\n"
+ "to an HSM mounted at a given hsm_root.\n"
+ " -d, --daemon Daemon mode, run in background\n"
+ " Options:\n"
+ " --no-attr Don't copy file attributes\n"
+ " --no-shadow Don't create shadow namespace in archive\n"
+ " --no-xattr Don't copy file extended attributes\n"
+ "The Lustre HSM tool performs administrator-type actions\n"
+ "on a Lustre HSM archive.\n"
+ "This POSIX-flavored tool can link an existing HSM namespace\n"
+ "into a Lustre filesystem.\n"
+ " Usage:\n"
+ " %s [options] --import <src> <dst> <lustre_mount_point>\n"
+ " import an archived subtree at\n"
+ " <src> (relative to hsm_root) into the Lustre filesystem at\n"
+ " <dst> (absolute)\n"
+ " %s [options] --rebind <old_FID> <new_FID> <lustre_mount_point>\n"
+ " rebind an entry in the HSM to a new FID\n"
+ " <old_FID> old FID the HSM entry is bound to\n"
+ " <new_FID> new FID to bind the HSM entry to\n"
+ " %s [options] --rebind <list_file> <lustre_mount_point>\n"
+ " perform the rebind operation for all FID in the list file\n"
+ " each line of <list_file> consists of <old_FID> <new_FID>\n"
+ " %s [options] --max-sequence <fsname>\n"
+ " return the max fid sequence of archived files\n"
+ " -A, --archive <#> Archive number (repeatable)\n"
+ " -p, --hsm-root <path> Target HSM mount point\n"
+ " -q, --quiet Produce less verbose output\n"
+ " -v, --verbose Produce more verbose output\n"
+ " -c, --chunk-size <sz> I/O size used during data copy\n"
+ " (unit can be used, default is MB)\n"
+ " --abort-on-error Abort operation on major error\n"
+ " --dry-run Don't run, just show what would be done\n"
+ " --bandwidth <bw> Limit I/O bandwidth (unit can be used\n,"
+ " default is MB)\n",
+ cmd_name, cmd_name, cmd_name, cmd_name, cmd_name);
+
+ exit(rc);
+}
+
+static int ct_parseopts(int argc, char * const *argv)
+{
+ struct option long_opts[] = {
+ {"abort-on-error", no_argument, &opt.o_abort_on_error, 1},
+ {"abort_on_error", no_argument, &opt.o_abort_on_error, 1},
+ {"archive", required_argument, NULL, 'A'},
+ {"bandwidth", required_argument, NULL, 'b'},
+ {"chunk-size", required_argument, NULL, 'c'},
+ {"chunk_size", required_argument, NULL, 'c'},
+ {"daemon", no_argument, NULL, 'd'},
+ {"dry-run", no_argument, &opt.o_dry_run, 1},
+ {"help", no_argument, NULL, 'h'},
+ {"hsm-root", required_argument, NULL, 'p'},
+ {"hsm_root", required_argument, NULL, 'p'},
+ {"import", no_argument, NULL, 'i'},
+ {"max-sequence", no_argument, NULL, 'M'},
+ {"max_sequence", no_argument, NULL, 'M'},
+ {"no-attr", no_argument, &opt.o_copy_attrs, 0},
+ {"no_attr", no_argument, &opt.o_copy_attrs, 0},
+ {"no-shadow", no_argument, &opt.o_shadow_tree, 0},
+ {"no_shadow", no_argument, &opt.o_shadow_tree, 0},
+ {"no-xattr", no_argument, &opt.o_copy_xattrs, 0},
+ {"no_xattr", no_argument, &opt.o_copy_xattrs, 0},
+ {"quiet", no_argument, NULL, 'q'},
+ {"rebind", no_argument, NULL, 'r'},
+ {"report", required_argument, &opt.o_report_int, 0},
+ {"verbose", no_argument, NULL, 'v'},
+ {0, 0, 0, 0}
+ };
+ int c;
+ unsigned long long value;
+ unsigned long long unit;
+
+ optind = 0;
+ while ((c = getopt_long(argc, argv, "A:b:c:dhiMp:qruv",
+ long_opts, NULL)) != -1) {
+ switch (c) {
+ case 'A':
+ if ((opt.o_archive_cnt >= MAX_ARCHIVE_CNT) ||
+ (atoi(optarg) >= MAX_ARCHIVE_CNT)) {
+ CT_ERROR("archive number must be less"
+ "than %lu\n", MAX_ARCHIVE_CNT);
+ return -E2BIG;
+ }
+ opt.o_archive_id[opt.o_archive_cnt] = atoi(optarg);
+ opt.o_archive_cnt++;
+ break;
+ case 'b': /* -b and -c have both a number with unit as arg */
+ case 'c':
+ unit = ONE_MB;
+ if (llapi_parse_size(optarg, &value, &unit, 0) < 0) {
+ CT_ERROR("bad value for -%c '%s'\n", c, optarg);
+ return -EINVAL;
+ }
+ if (c == 'c')
+ opt.o_chunk_size = value;
+ else
+ opt.o_bandwidth = value;
+ break;
+ case 'd':
+ opt.o_action = CA_DAEMON;
+ break;
+ case 'h':
+ usage(argv[0], 0);
+ case 'i':
+ opt.o_action = CA_IMPORT;
+ break;
+ case 'M':
+ opt.o_action = CA_MAXSEQ;
+ break;
+ case 'p':
+ opt.o_hsm_root = optarg;
+ break;
+ case 'q':
+ opt.o_verbose--;
+ break;
+ case 'r':
+ opt.o_action = CA_REBIND;
+ break;
+ case 'v':
+ opt.o_verbose++;
+ break;
+ case 0:
+ break;
+ default:
+ CT_ERROR("unrecognized option '%s'\n",
+ argv[optind - 1]);
+ return -EINVAL;
+ }
+ }
+
+ switch (opt.o_action) {
+ case CA_IMPORT:
+ /* src dst mount_point */
+ if (argc != optind + 3) {
+ CT_ERROR("--import requires 2 arguments\n");
+ return -EINVAL;
+ }
+ opt.o_src = argv[optind++];
+ opt.o_dst = argv[optind++];
+ break;
+ case CA_REBIND:
+ /* FID1 FID2 mount_point or FILE mount_point */
+ if (argc == optind + 2) {
+ opt.o_src = argv[optind++];
+ opt.o_dst = NULL;
+ } else if (argc == optind + 3) {
+ opt.o_src = argv[optind++];
+ opt.o_dst = argv[optind++];
+ } else {
+ CT_ERROR("--rebind requires 1 or 2 arguments\n");
+ return -EINVAL;
+ }
+ break;
+ case CA_MAXSEQ:
+ default:
+ /* just mount point */
+ break;
+ }
+
+ if (argc != optind + 1) {
+ CT_ERROR("no mount point specified\n");
+ return -EINVAL;
+ }
+
+ opt.o_mnt = argv[optind];
+
+ CT_TRACE("action=%d src=%s dst=%s mount_point=%s\n",
+ opt.o_action, opt.o_src, opt.o_dst, opt.o_mnt);
+
+ if (!opt.o_dry_run && opt.o_hsm_root == NULL) {
+ CT_ERROR("must specify a HSM root\n");
+ return -EINVAL;
+ }
+
+ if (opt.o_action == CA_IMPORT) {
+ if (opt.o_src && opt.o_src[0] == '/') {
+ CT_ERROR("source path must be relative to HSM root.\n");
+ return -EINVAL;
+ }
+
+ if (opt.o_dst && opt.o_dst[0] != '/') {
+ CT_ERROR("destination path must be absolute.\n");
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+/* mkdir -p path */
+static int ct_mkdir_p(const char *path)
+{
+ char *saved, *ptr;
+ int rc;
+
+ ptr = strdup(path);
+ saved = ptr;
+ while (*ptr == '/')
+ ptr++;
+
+ while ((ptr = strchr(ptr, '/')) != NULL) {
+ *ptr = '\0';
+ rc = mkdir(saved, DIR_PERM);
+ *ptr = '/';
+ if (rc < 0 && errno != EEXIST) {
+ CT_ERROR("'%s' mkdir failed (%s)\n", path,
+ strerror(errno));
+ free(saved);
+ return -errno;
+ }
+ ptr++;
+ }
+
+ free(saved);
+
+ return 0;
+}
+
+static int ct_save_stripe(int src_fd, const char *src, const char *dst)
+{
+ char lov_file[PATH_MAX];
+ char lov_buf[XATTR_SIZE_MAX];
+ struct lov_user_md *lum;
+ int rc;
+ int fd;
+ ssize_t xattr_size;
+
+ snprintf(lov_file, sizeof(lov_file), "%s.lov", dst);
+ CT_TRACE("saving stripe info of '%s' in %s\n", src, lov_file);
+
+ xattr_size = fgetxattr(src_fd, XATTR_LUSTRE_LOV, lov_buf,
+ sizeof(lov_buf));
+ if (xattr_size < 0) {
+ CT_ERROR("'%s' cannot get stripe info on (%s)\n", src,
+ strerror(errno));
+ return -errno;
+ }
+
+ lum = (struct lov_user_md *)lov_buf;
+
+ if (lum->lmm_magic == LOV_USER_MAGIC_V1 ||
+ lum->lmm_magic == LOV_USER_MAGIC_V3) {
+ /* Set stripe_offset to -1 so that it is not interpreted as a
+ * hint on restore. */
+ lum->lmm_stripe_offset = -1;
+ }
+
+ fd = open(lov_file, O_TRUNC | O_CREAT | O_WRONLY, FILE_PERM);
+ if (fd < 0) {
+ CT_ERROR("'%s' cannot open (%s)\n", lov_file, strerror(errno));
+ return -errno;
+ }
+
+ rc = write(fd, lum, xattr_size);
+ if (rc < 0) {
+ CT_ERROR("'%s' cannot write %d bytes (%s)\n",
+ lov_file, xattr_size, strerror(errno));
+ close(fd);
+ return -errno;
+ }
+
+ rc = close(fd);
+ if (rc < 0) {
+ CT_ERROR("'%s' cannot close (%s)\n", lov_file, strerror(errno));
+ return -errno;
+ }
+
+ return 0;
+}
+
+static int ct_load_stripe(const char *src, struct lov_user_md_v3 *lum,
+ size_t *lum_size)
+{
+ char lov_file[PATH_MAX];
+ int rc;
+ int fd;
+
+ snprintf(lov_file, sizeof(lov_file), "%s.lov", src);
+ CT_TRACE("reading stripe rules from '%s' for '%s'\n", lov_file, src);
+
+ fd = open(lov_file, O_RDONLY);
+ if (fd < 0) {
+ CT_ERROR("'%s' cannot open (%s)\n", lov_file, strerror(errno));
+ return -ENODATA;
+ }
+
+ rc = read(fd, lum, *lum_size);
+ if (rc < 0) {
+ CT_ERROR("'%s' cannot read %lu bytes (%s)\n", lov_file,
+ lum_size, strerror(errno));
+ close(fd);
+ return -ENODATA;
+ }
+
+ *lum_size = (size_t)rc;
+ close(fd);
+
+ return 0;
+}
+
+static int ct_restore_stripe(const char *src, const char *dst, int dst_fd)
+{
+ int rc;
+ char lov_buf[XATTR_SIZE_MAX];
+ size_t lum_size = sizeof(lov_buf);
+
+ rc = ct_load_stripe(src, (struct lov_user_md_v3 *)lov_buf, &lum_size);
+ if (rc) {
+ CT_WARN("'%s' cannot get stripe rules (%s), use default\n",
+ src, strerror(-rc));
+ return 0;
+ }
+
+ rc = fsetxattr(dst_fd, XATTR_LUSTRE_LOV, lov_buf, lum_size, XATTR_CREATE);
+ if (rc < 0) {
+ CT_ERROR("'%s' cannot set striping (%s)\n",
+ dst, strerror(errno));
+ return -errno;
+ }
+
+ return 0;
+}
+
+/* non-blocking read or write */
+static int nonblock_rw(bool wr, int fd, char *buf, int size)
+{
+ int rc;
+
+ if (wr)
+ rc = write(fd, buf, size);
+ else
+ rc = read(fd, buf, size);
+
+ if ((rc < 0) && (errno == -EAGAIN)) {
+ fd_set set;
+ struct timeval timeout;
+
+ timeout.tv_sec = opt.o_report_int;
+
+ FD_ZERO(&set);
+ FD_SET(fd, &set);
+ if (wr)
+ rc = select(FD_SETSIZE, NULL, &set, NULL, &timeout);
+ else
+ rc = select(FD_SETSIZE, &set, NULL, NULL, &timeout);
+ if (rc < 0)
+ return -errno;
+ if (rc == 0)
+ /* Timed out, we read nothing */
+ return -EAGAIN;
+
+ /* Should be available now */
+ if (wr)
+ rc = write(fd, buf, size);
+ else
+ rc = read(fd, buf, size);
+ }
+
+ if (rc < 0)
+ rc = -errno;
+
+ return rc;
+}
+
+static int ct_copy_data(struct hsm_copyaction_private *hcp, const char *src,
+ const char *dst, int src_fd, int dst_fd,
+ const struct hsm_action_item *hai, long hal_flags)
+{
+ struct hsm_extent he;
+ struct stat src_st;
+ struct stat dst_st;
+ char *buf;
+ __u64 wpos = 0;
+ __u64 rpos = 0;
+ __u64 rlen;
+ time_t last_print_time = time(0);
+ int rsize;
+ int wsize;
+ int bufoff = 0;
+ int rc = 0;
+
+ CT_TRACE("going to copy data from '%s' to %s\n", src, dst);
+
+ buf = malloc(opt.o_chunk_size);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ if (fstat(src_fd, &src_st) < 0) {
+ CT_ERROR("'%s' stat failed (%s)\n", src, strerror(errno));
+ return -errno;
+ }
+
+ if (!S_ISREG(src_st.st_mode)) {
+ CT_ERROR("'%s' not a regular file\n", src);
+ return -EINVAL;
+ }
+
+ rc = lseek(src_fd, hai->hai_extent.offset, SEEK_SET);
+ if (rc < 0) {
+ CT_ERROR("'%s' seek to read to "LPU64" (len %zu)"
+ " failed (%s)\n",
+ src, hai->hai_extent.offset, src_st.st_size,
+ strerror(errno));
+ rc = -errno;
+ goto out;
+ }
+
+ if (fstat(dst_fd, &dst_st) < 0) {
+ CT_ERROR("'%s' stat failed (%s)\n", dst, strerror(errno));
+ return -errno;
+ }
+
+ if (!S_ISREG(dst_st.st_mode)) {
+ CT_ERROR("'%s' not a regular file\n", dst);
+ return -EINVAL;
+ }
+
+ rc = lseek(dst_fd, hai->hai_extent.offset, SEEK_SET);
+ if (rc < 0) {
+ CT_ERROR("'%s' seek to write to "LPU64" failed (%s)\n", src,
+ hai->hai_extent.offset, strerror(errno));
+ rc = -errno;
+ goto out;
+ }
+
+ he.offset = hai->hai_extent.offset;
+ he.length = 0;
+ rc = llapi_hsm_action_progress(hcp, &he, 0);
+ if (rc) {
+ /* Action has been canceled or something wrong
+ * is happening. Stop copying data. */
+ CT_ERROR("%s->'%s' progress returned err %d\n", src, dst, rc);
+ goto out;
+ }
+
+ errno = 0;
+ /* Don't read beyond a given extent */
+ rlen = (hai->hai_extent.length == -1LL) ?
+ src_st.st_size : hai->hai_extent.length;
+
+ while (wpos < rlen) {
+ int chunk = (rlen - wpos > opt.o_chunk_size) ?
+ opt.o_chunk_size : rlen - wpos;
+
+ /* Only read more if we wrote everything in the buffer */
+ if (wpos == rpos) {
+ rsize = nonblock_rw(0, src_fd, buf, chunk);
+ if (rsize == 0)
+ /* EOF */
+ break;
+
+ if (rsize == -EAGAIN) {
+ /* Timed out */
+ rsize = 0;
+ if (rpos == 0) {
+ /* Haven't read anything yet, let's
+ * give it back to the coordinator
+ * for rescheduling */
+ rc = -EAGAIN;
+ break;
+ }
+ }
+
+ if (rsize < 0) {
+ CT_ERROR("'%s' read failed (%s)\n", src,
+ strerror(-rsize));
+ rc = rsize;
+ break;
+ }
+
+ rpos += rsize;
+ bufoff = 0;
+ }
+
+ wsize = nonblock_rw(1, dst_fd, buf + bufoff, rpos - wpos);
+ if (wsize == -EAGAIN)
+ /* Timed out */
+ wsize = 0;
+
+ if (wsize < 0) {
+ CT_ERROR("'%s' write failed (%s)\n", dst,
+ strerror(-wsize));
+ rc = wsize;
+ break;
+ }
+
+ wpos += wsize;
+ bufoff += wsize;
+
+ if (opt.o_bandwidth != 0) {
+ static unsigned long long tot_bytes;
+ static time_t start_time, last_time;
+ time_t now = time(0);
+ double tot_time, excess;
+ unsigned int sleep_time;
+
+ if (now > last_time + 5) {
+ tot_bytes = 0;
+ start_time = last_time = now;
+ }
+
+ tot_bytes += wsize;
+ tot_time = now - start_time;
+ if (tot_time < 1)
+ tot_time = 1;
+
+ excess = tot_bytes - tot_time * opt.o_bandwidth;
+ sleep_time = excess * 1000000 / opt.o_bandwidth;
+ if ((now - start_time) % 10 == 1)
+ CT_TRACE("bandwith control: excess=%E"
+ " sleep for %dus\n",
+ excess, sleep_time);
+
+ if (excess > 0)
+ usleep(sleep_time);
+
+ last_time = now;
+ }
+
+ if (time(0) >= last_print_time + opt.o_report_int) {
+ last_print_time = time(0);
+ CT_TRACE("%%"LPU64" ", 100 * wpos / rlen);
+ he.length = wpos;
+ rc = llapi_hsm_action_progress(hcp, &he, 0);
+ if (rc) {
+ /* Action has been canceled or something wrong
+ * is happening. Stop copying data. */
+ CT_ERROR("%s->'%s' progress returned err %d\n",
+ src, dst, rc);
+ goto out;
+ }
+ }
+ rc = 0;
+ }
+ CT_TRACE("\n");
+
+out:
+ /*
+ * truncate restored file
+ * size is taken from the archive this is done to support
+ * restore after a force release which leaves the file with the
+ * wrong size (can big bigger than the new size)
+ */
+ if ((hai->hai_action == HSMA_RESTORE) &&
+ (src_st.st_size < dst_st.st_size)) {
+ /*
+ * make sure the file is on disk before reporting success.
+ */
+ rc = ftruncate(dst_fd, src_st.st_size);
+ if (rc < 0) {
+ rc = -errno;
+ CT_ERROR("'%s' final truncate to %lu failed (%s)\n",
+ dst, src_st.st_size, strerror(-rc));
+ err_major++;
+ }
+ }
+
+ if (rc == 0) {
+ rc = fsync(dst_fd);
+ if (rc < 0) {
+ rc = -errno;
+ CT_ERROR("'%s' fsync failed (%s)\n", dst,
+ strerror(-rc));
+ err_major++;
+ }
+ }
+
+ free(buf);
+
+ return rc;
+}
+
+/* Copy file attributes from file src to file dest */
+static int ct_copy_attr(const char *src, const char *dst, int src_fd,
+ int dst_fd)
+{
+ struct stat st;
+ struct timeval times[2];
+
+ if (fstat(src_fd, &st) < 0) {
+ CT_ERROR("'%s' stat failed (%s)\n",
+ src, strerror(errno));
+ return -errno;
+ }
+
+ times[0].tv_sec = st.st_atime;
+ times[0].tv_usec = 0;
+ times[1].tv_sec = st.st_mtime;
+ times[1].tv_usec = 0;
+ if (fchmod(dst_fd, st.st_mode) < 0 ||
+ fchown(dst_fd, st.st_uid, st.st_gid) < 0 ||
+ futimes(dst_fd, times) < 0)
+ CT_ERROR("'%s' fchmod fchown or futimes failed (%s)\n", src,
+ strerror(errno));
+ return -errno;
+ return 0;
+}
+
+static int ct_copy_xattr(const char *src, const char *dst, int src_fd,
+ int dst_fd, bool is_restore)
+{
+ char list[XATTR_LIST_MAX];
+ char value[XATTR_SIZE_MAX];
+ char *name;
+ ssize_t list_len;
+ int rc;
+
+ list_len = flistxattr(src_fd, list, sizeof(list));
+ if (list_len < 0)
+ return -errno;
+
+ name = list;
+ while (name < list + list_len) {
+ rc = fgetxattr(src_fd, name, value, sizeof(value));
+ if (rc < 0)
+ return -errno;
+
+ /* when we restore, we do not restore lustre xattr */
+ if (!is_restore ||
+ (strncmp(XATTR_TRUSTED_PREFIX, name,
+ sizeof(XATTR_TRUSTED_PREFIX) - 1) != 0)) {
+ rc = fsetxattr(dst_fd, name, value, rc, 0);
+ CT_TRACE("'%s' fsetxattr of '%s' rc=%d (%s)\n",
+ dst, name, rc, strerror(errno));
+ /* lustre.* attrs aren't supported on other FS's */
+ if (rc < 0 && errno != EOPNOTSUPP) {
+ CT_ERROR("'%s' fsetxattr of '%s' failed (%s)\n",
+ dst, name, strerror(errno));
+ return -errno;
+ }
+ }
+ name += strlen(name) + 1;
+ }
+
+ return 0;
+}
+
+static int ct_path_lustre(char *buf, int sz, const char *mnt,
+ const lustre_fid *fid)
+{
+ return snprintf(buf, sz, "%s/%s/fid/"DFID_NOBRACE, mnt,
+ dot_lustre_name, PFID(fid));
+}
+
+static int ct_path_archive(char *buf, int sz, const char *archive_dir,
+ const lustre_fid *fid)
+{
+ return snprintf(buf, sz, "%s/%04x/%04x/%04x/%04x/%04x/%04x/"
+ DFID_NOBRACE, archive_dir,
+ (fid)->f_oid & 0xFFFF,
+ (fid)->f_oid >> 16 & 0xFFFF,
+ (unsigned int)((fid)->f_seq & 0xFFFF),
+ (unsigned int)((fid)->f_seq >> 16 & 0xFFFF),
+ (unsigned int)((fid)->f_seq >> 32 & 0xFFFF),
+ (unsigned int)((fid)->f_seq >> 48 & 0xFFFF),
+ PFID(fid));
+}
+
+static bool ct_is_retryable(int err)
+{
+ return err == -ETIMEDOUT;
+}
+
+static int ct_begin(struct hsm_copyaction_private **phcp,
+ const struct hsm_action_item *hai)
+{
+ char src[PATH_MAX];
+ int rc;
+
+ rc = llapi_hsm_action_begin(phcp, ctdata, hai, false);
+ if (rc < 0) {
+ ct_path_lustre(src, sizeof(src), opt.o_mnt, &hai->hai_fid);
+ CT_ERROR("'%s' copy start failed (%s)\n", src, strerror(-rc));
+ }
+
+ return rc;
+}
+
+static int ct_fini(struct hsm_copyaction_private **phcp,
+ const struct hsm_action_item *hai, int flags, int ct_rc)
+{
+ char lstr[PATH_MAX];
+ int rc;
+
+ CT_TRACE("Action completed, notifying coordinator "
+ "cookie="LPX64", FID="DFID", flags=%d err=%d\n",
+ hai->hai_cookie, PFID(&hai->hai_fid),
+ flags, -ct_rc);
+
+ ct_path_lustre(lstr, sizeof(lstr), opt.o_mnt, &hai->hai_fid);
+ rc = llapi_hsm_action_end(phcp, &hai->hai_extent, flags, abs(ct_rc));
+ if (rc == -ECANCELED)
+ CT_ERROR("'%s' completed action has been canceled: "
+ "cookie="LPX64", FID="DFID"\n", lstr, hai->hai_cookie,
+ PFID(&hai->hai_fid));
+ else if (rc < 0)
+ CT_ERROR("'%s' copy end failed (%s)\n", lstr, strerror(-rc));
+ else
+ CT_TRACE("'%s' copy end ok (rc=%d)\n", lstr, rc);
+
+ return rc;
+}
+
+static int ct_archive(const struct hsm_action_item *hai, const long hal_flags)
+{
+ struct hsm_copyaction_private *hcp = NULL;
+ char src[PATH_MAX];
+ char dst[PATH_MAX];
+ int rc;
+ int rcf = 0;
+ bool rename_needed = false;
+ int ct_flags = 0;
+ int open_flags;
+ int src_fd = -1;
+ int dst_fd = -1;
+
+ rc = ct_begin(&hcp, hai);
+ if (rc < 0)
+ goto fini_major;
+
+ /* we fill archive so:
+ * source = data FID
+ * destination = lustre FID
+ */
+ ct_path_lustre(src, sizeof(src), opt.o_mnt, &hai->hai_dfid);
+ ct_path_archive(dst, sizeof(dst), opt.o_hsm_root, &hai->hai_fid);
+ if (hai->hai_extent.length == -1) {
+ /* whole file, write it to tmp location and atomically
+ * replace old archived file */
+ strncat(dst, "_tmp", sizeof(dst) - strlen(dst) - 1);
+ /* we cannot rely on the same test because ct_copy_data()
+ * updates hai_extent.length */
+ rename_needed = true;
+ }
+
+ CT_TRACE("'%s' archived to %s\n", src, dst);
+
+ if (opt.o_dry_run) {
+ rc = 0;
+ goto fini_major;
+ }
+
+ rc = ct_mkdir_p(dst);
+ if (rc < 0) {
+ CT_ERROR("'%s' mkdir_p failed (%s)\n", dst, strerror(-rc));
+ goto fini_major;
+ }
+
+ src_fd = open(src, O_RDONLY | O_NOATIME | O_NONBLOCK | O_NOFOLLOW);
+ if (src_fd == -1) {
+ CT_ERROR("'%s' open read failed (%s)\n", src, strerror(errno));
+ rc = -errno;
+ goto fini_major;
+ }
+
+ open_flags = O_WRONLY | O_NOFOLLOW | O_NONBLOCK;
+ /* If extent is specified, don't truncate an old archived copy */
+ open_flags |= ((hai->hai_extent.length == -1) ? O_TRUNC : 0) | O_CREAT;
+
+ dst_fd = open(dst, open_flags, FILE_PERM);
+ if (dst_fd == -1) {
+ CT_ERROR("'%s' open write failed (%s)\n", dst, strerror(errno));
+ rc = -errno;
+ goto fini_major;
+ }
+
+ /* saving stripe is not critical */
+ rc = ct_save_stripe(src_fd, src, dst);
+ if (rc < 0)
+ CT_ERROR("'%s' cannot save file striping info in '%s' (%s)\n",
+ src, dst, strerror(-rc));
+
+ rc = ct_copy_data(hcp, src, dst, src_fd, dst_fd, hai, hal_flags);
+ if (rc < 0) {
+ CT_ERROR("'%s' data copy failed to '%s' (%s)\n",
+ src, dst, strerror(-rc));
+ goto fini_major;
+ }
+
+ CT_TRACE("'%s' data archived to '%s' done\n", src, dst);
+
+ /* attrs will remain on the MDS; no need to copy them, except possibly
+ for disaster recovery */
+ if (opt.o_copy_attrs) {
+ rc = ct_copy_attr(src, dst, src_fd, dst_fd);
+ if (rc < 0) {
+ CT_ERROR("'%s' attr copy failed to '%s' (%s)\n",
+ src, dst, strerror(-rc));
+ rcf = rc;
+ }
+ CT_TRACE("'%s' attr file copied to archive '%s'\n",
+ src, dst);
+ }
+
+ /* xattrs will remain on the MDS; no need to copy them, except possibly
+ for disaster recovery */
+ if (opt.o_copy_xattrs) {
+ rc = ct_copy_xattr(src, dst, src_fd, dst_fd, false);
+ if (rc < 0) {
+ CT_ERROR("'%s' xattr copy failed to '%s' (%s)\n",
+ src, dst, strerror(-rc));
+ rcf = rcf ? rcf : rc;
+ }
+ CT_ERROR("'%s' xattr file copied to archive '%s'\n",
+ src, dst);
+ }
+
+ if (rename_needed == true) {
+ char tmp_src[PATH_MAX];
+ char tmp_dst[PATH_MAX];
+
+ /* atomically replace old archived file */
+ ct_path_archive(src, sizeof(src), opt.o_hsm_root,
+ &hai->hai_fid);
+ rc = rename(dst, src);
+ if (rc < 0) {
+ CT_ERROR("'%s' renamed to '%s' failed (%s)\n", dst, src,
+ strerror(errno));
+ rc = -errno;
+ goto fini_major;
+ }
+ /* rename lov file */
+ snprintf(tmp_src, sizeof(tmp_src), "%s.lov", src);
+ snprintf(tmp_dst, sizeof(tmp_dst), "%s.lov", dst);
+ rc = rename(tmp_dst, tmp_src);
+ if (rc < 0)
+ CT_ERROR("'%s' renamed to '%s' failed (%s)\n",
+ tmp_dst, tmp_src, strerror(errno));
+ }
+
+ if (opt.o_shadow_tree) {
+ /* Create a namespace of softlinks that shadows the original
+ * Lustre namespace. This will only be current at
+ * time-of-archive (won't follow renames).
+ * WARNING: release won't kill these links; a manual
+ * cleanup of dead links would be required.
+ */
+ char buf[PATH_MAX];
+ long long recno = -1;
+ int linkno = 0;
+ char *ptr;
+ int depth = 0;
+ int sz;
+
+ sprintf(buf, DFID, PFID(&hai->hai_fid));
+ sprintf(src, "%s/shadow/", opt.o_hsm_root);
+
+ ptr = opt.o_hsm_root;
+ while (*ptr)
+ (*ptr++ == '/') ? depth-- : 0;
+
+ rc = llapi_fid2path(opt.o_mnt, buf, src + strlen(src),
+ sizeof(src) - strlen(src), &recno, &linkno);
+ if (rc < 0) {
+ CT_ERROR("'%s' fid2path failed (%s)\n", buf,
+ strerror(-rc));
+ rcf = rcf ? rcf : rc;
+ goto fini_minor;
+ }
+
+ /* Figure out how many parent dirs to symlink back */
+ ptr = src;
+ while (*ptr)
+ (*ptr++ == '/') ? depth++ : 0;
+ sprintf(buf, "..");
+ while (--depth > 1)
+ strcat(buf, "/..");
+
+ ct_path_archive(dst, sizeof(dst), buf, &hai->hai_fid);
+
+ if (ct_mkdir_p(src)) {
+ CT_ERROR("'%s' mkdir_p failed (%s)\n", src,
+ strerror(errno));
+ rcf = rcf ? rcf : -errno;
+ goto fini_minor;
+ }
+ /* symlink already exists ? */
+ sz = readlink(src, buf, sizeof(buf));
+ if (sz >= 0) {
+ buf[sz] = '\0';
+ if (sz == 0 || strncmp(buf, dst, sz) != 0) {
+ if (unlink(src) && errno != ENOENT) {
+ CT_ERROR("'%s' unlink symlink failed "
+ "(%s)\n", src,
+ strerror(errno));
+ rcf = rcf ? rcf : -errno;
+ goto fini_minor;
+ /* unlink old symlink done */
+ CT_TRACE("'%s' remove old symlink pointing"
+ " to '%s'\n", src, buf);
+ }
+ } else {
+ /* symlink already ok */
+ CT_TRACE("'%s' symlink already pointing"
+ " to '%s'\n", src, dst);
+ rcf = 0;
+ goto fini_minor;
+ }
+ }
+ if (symlink(dst, src)) {
+ CT_ERROR("'%s' symlink to '%s' failed (%s)\n", src, dst,
+ strerror(errno));
+ rcf = rcf ? rcf : -errno;
+ goto fini_minor;
+ }
+ CT_TRACE("'%s' symlink to '%s' done\n", src, dst);
+ }
+fini_minor:
+ if (rcf)
+ err_minor++;
+ goto out;
+
+
+fini_major:
+ err_major++;
+
+ unlink(dst);
+ if (ct_is_retryable(rc))
+ ct_flags |= HP_FLAG_RETRY;
+
+ rcf = rc;
+
+out:
+ if (!(src_fd < 0))
+ close(src_fd);
+
+ if (!(dst_fd < 0))
+ close(dst_fd);
+
+ if (hcp != NULL)
+ rc = ct_fini(&hcp, hai, ct_flags, rcf);
+
+ return rc;
+}
+
+static int ct_restore(const struct hsm_action_item *hai, const long hal_flags)
+{
+ struct hsm_copyaction_private *hcp = NULL;
+ char src[PATH_MAX];
+ char dst[PATH_MAX];
+ int rc;
+ int flags = 0;
+ int src_fd = -1;
+ int dst_fd = -1;
+ lustre_fid dfid;
+
+ rc = ct_begin(&hcp, hai);
+ if (rc)
+ goto fini;
+
+ /* we fill lustre so:
+ * source = lustre FID in the backend
+ * destination = data FID = volatile file
+ */
+
+ /* build backend file name from released file FID */
+ ct_path_archive(src, sizeof(src), opt.o_hsm_root, &hai->hai_fid);
+
+ /* get the FID of the volatile file */
+ rc = llapi_hsm_action_get_dfid(hcp, &dfid);
+ if (rc < 0) {
+ CT_ERROR("restoring "DFID", cannot get FID of created volatile"
+ " file (%s)\n", PFID(&hai->hai_fid), strerror(-rc));
+ goto fini;
+ }
+
+ /* build volatile "file name", for messages */
+ snprintf(dst, sizeof(dst), "{VOLATILE}="DFID, PFID(&dfid));
+
+ CT_TRACE("'%s' restore data to '%s'\n", src, dst);
+
+ if (opt.o_dry_run) {
+ rc = 0;
+ goto fini;
+ }
+
+ src_fd = open(src, O_RDONLY | O_NOATIME | O_NONBLOCK | O_NOFOLLOW);
+ if (src_fd < 0) {
+ CT_ERROR("'%s' open for read failed (%s)\n", src,
+ strerror(errno));
+ rc = -errno;
+ goto fini;
+ }
+
+ dst_fd = llapi_hsm_action_get_fd(hcp);
+
+ /* the layout cannot be allocated through .fid so we have to
+ * restore a layout */
+ rc = ct_restore_stripe(src, dst, dst_fd);
+ if (rc) {
+ CT_ERROR("'%s' cannot restore file striping info from '%s'"
+ " (%s)\n", dst, src, strerror(-rc));
+ err_major++;
+ goto fini;
+ }
+
+ rc = ct_copy_data(hcp, src, dst, src_fd, dst_fd, hai, hal_flags);
+ if (rc < 0) {
+ CT_ERROR("'%s' data copy to '%s' failed (%s)\n", src, dst,
+ strerror(-rc));
+ err_major++;
+ if (ct_is_retryable(rc))
+ flags |= HP_FLAG_RETRY;
+ goto fini;
+ }
+
+ CT_TRACE("'%s' data restore done to %s\n", src, dst);
+
+fini:
+ if (hcp != NULL)
+ rc = ct_fini(&hcp, hai, flags, rc);
+
+ /* object swaping is done by cdt at copy end, so close of volatile file
+ * cannot be done before */
+ if (!(src_fd < 0))
+ close(src_fd);
+
+ if (!(dst_fd < 0))
+ close(dst_fd);
+
+ return rc;
+}
+
+static int ct_remove(const struct hsm_action_item *hai, const long hal_flags)
+{
+ struct hsm_copyaction_private *hcp = NULL;
+ char dst[PATH_MAX];
+ int rc;
+
+ rc = ct_begin(&hcp, hai);
+ if (rc < 0)
+ goto fini;
+
+ ct_path_archive(dst, sizeof(dst), opt.o_hsm_root, &hai->hai_fid);
+
+ CT_TRACE("'%s' removed file\n", dst);
+
+ if (opt.o_dry_run) {
+ rc = 0;
+ goto fini;
+ }
+
+ rc = unlink(dst);
+ if (rc < 0) {
+ rc = -errno;
+ CT_ERROR("'%s' unlink failed (%s)\n", dst, strerror(-rc));
+ err_minor++;
+ goto fini;
+ }
+
+fini:
+ if (hcp != NULL)
+ rc = ct_fini(&hcp, hai, 0, rc);
+
+ return rc;
+}
+
+static int ct_report_error(const struct hsm_action_item *hai, int flags,
+ int errval)
+{
+ struct hsm_copyaction_private *hcp;
+ int rc;
+
+ rc = llapi_hsm_action_begin(&hcp, ctdata, hai, true);
+ if (rc)
+ return rc;
+
+ rc = llapi_hsm_action_end(&hcp, &hai->hai_extent, flags, abs(errval));
+
+ return rc;
+}
+
+static int ct_process_item(struct hsm_action_item *hai, const long hal_flags)
+{
+ int rc = 0;
+
+ if (opt.o_verbose >= LLAPI_MSG_INFO || opt.o_dry_run) {
+ /* Print the original path */
+ char fid[128];
+ char path[PATH_MAX];
+ long long recno = -1;
+ int linkno = 0;
+
+ sprintf(fid, DFID, PFID(&hai->hai_fid));
+ CT_TRACE("'%s' action %s reclen %d, cookie="LPX64"\n",
+ fid, hsm_copytool_action2name(hai->hai_action),
+ hai->hai_len, hai->hai_cookie);
+ rc = llapi_fid2path(opt.o_mnt, fid, path,
+ sizeof(path), &recno, &linkno);
+ if (rc < 0)
+ CT_ERROR("'%s' fid2path failed (%s)\n", fid,
+ strerror(-rc));
+ else
+ CT_TRACE("'%s' processing file\n", path);
+ }
+
+ switch (hai->hai_action) {
+ /* set err_major, minor inside these functions */
+ case HSMA_ARCHIVE:
+ rc = ct_archive(hai, hal_flags);
+ break;
+ case HSMA_RESTORE:
+ rc = ct_restore(hai, hal_flags);
+ break;
+ case HSMA_REMOVE:
+ rc = ct_remove(hai, hal_flags);
+ break;
+ case HSMA_CANCEL:
+ CT_TRACE("'%s' cancel not implemented\n", opt.o_mnt);
+ /* Don't report progress to coordinator for this cookie:
+ * the copy function will get ECANCELED when reporting
+ * progress. */
+ err_minor++;
+ return 0;
+ break;
+ default:
+ CT_ERROR("'%s' unknown action %d\n", opt.o_mnt,
+ hai->hai_action);
+ err_minor++;
+ ct_report_error(hai, 0, -EINVAL);
+ }
+
+ return 0;
+}
+
+struct ct_th_data {
+ long hal_flags;
+ struct hsm_action_item *hai;
+};
+
+static void *ct_thread(void *data)
+{
+ struct ct_th_data *cttd = data;
+ int rc;
+
+ rc = ct_process_item(cttd->hai, cttd->hal_flags);
+
+ free(cttd->hai);
+ free(cttd);
+ pthread_exit((void *)(intptr_t)rc);
+}
+
+static int ct_process_item_async(const struct hsm_action_item *hai,
+ long hal_flags)
+{
+ pthread_attr_t attr;
+ pthread_t thread;
+ struct ct_th_data *data;
+ int rc;
+
+ data = malloc(sizeof(*data));
+ if (data == NULL)
+ return -ENOMEM;
+
+ data->hai = malloc(hai->hai_len);
+ if (data->hai == NULL) {
+ free(data);
+ return -ENOMEM;
+ }
+
+ memcpy(data->hai, hai, hai->hai_len);
+ data->hal_flags = hal_flags;
+
+ rc = pthread_attr_init(&attr);
+ if (rc != 0) {
+ CT_ERROR("'%s' pthread_attr_init: %s\n", opt.o_mnt,
+ strerror(rc));
+ free(data->hai);
+ free(data);
+ return -rc;
+ }
+
+ pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+
+ rc = pthread_create(&thread, &attr, ct_thread, data);
+ if (rc != 0)
+ CT_ERROR("'%s' thread create: (%s)\n", opt.o_mnt, strerror(rc));
+
+ pthread_attr_destroy(&attr);
+ return 0;
+}
+
+static int ct_import_one(const char *src, const char *dst)
+{
+ char newarc[PATH_MAX];
+ lustre_fid fid;
+ struct stat st;
+ int rc;
+
+ CT_TRACE("'%s' importing from %s\n", dst, src);
+
+ if (stat(src, &st) < 0) {
+ CT_ERROR("'%s' stat failed (%s)\n", src, strerror(errno));
+ return -errno;
+ }
+
+ if (opt.o_dry_run)
+ return 0;
+
+ rc = llapi_hsm_import(dst,
+ opt.o_archive_cnt ? opt.o_archive_id[0] : 0,
+ &st, 0, 0, 0, 0, NULL, &fid);
+ if (rc < 0) {
+ CT_ERROR("'%s' import from '%s' failed (%s)\n", dst, src,
+ strerror(-rc));
+ return -rc;
+ }
+
+ ct_path_archive(newarc, sizeof(newarc), opt.o_hsm_root, &fid);
+
+ rc = ct_mkdir_p(newarc);
+ if (rc < 0) {
+ CT_ERROR("'%s' mkdir_p failed (%s)\n", newarc, strerror(-rc));
+ err_major++;
+ return rc;
+
+ }
+
+ /* Lots of choices now: mv, ln, ln -s ? */
+ rc = link(src, newarc); /* hardlink */
+ if (rc < 0) {
+ CT_ERROR("'%s' link to '%s' failed (%s)\n", newarc, src,
+ strerror(errno));
+ err_major++;
+ return -errno;
+ }
+ CT_TRACE("'%s' imported from '%s'=='%s'\n", dst, newarc, src);
+
+ return 0;
+}
+
+static char *path_concat(const char *dirname, const char *basename)
+{
+ char *result;
+ int dirlen = strlen(dirname);
+
+ result = malloc(dirlen + strlen(basename) + 2);
+ if (result == NULL)
+ return NULL;
+
+ memcpy(result, dirname, dirlen);
+ result[dirlen] = '/';
+ strcpy(result + dirlen + 1, basename);
+
+ return result;
+}
+
+static int ct_import_recurse(const char *relpath)
+{
+ DIR *dir;
+ struct dirent ent, *cookie = NULL;
+ char *srcpath, *newpath;
+ int rc;
+
+ if (relpath == NULL)
+ return -EINVAL;
+
+ srcpath = path_concat(opt.o_hsm_root, relpath);
+ if (srcpath == NULL) {
+ err_major++;
+ return -ENOMEM;
+ }
+
+ dir = opendir(srcpath);
+ if (dir == NULL) {
+ /* Not a dir, or error */
+ if (errno == ENOTDIR) {
+ /* Single regular file case, treat o_dst as absolute
+ final location. */
+ rc = ct_import_one(srcpath, opt.o_dst);
+ } else {
+ CT_ERROR("'%s' opendir failed (%s)\n", srcpath,
+ strerror(errno));
+ err_major++;
+ rc = -errno;
+ }
+ free(srcpath);
+ return rc;
+ }
+ free(srcpath);
+
+ while (1) {
+ rc = readdir_r(dir, &ent, &cookie);
+ if (rc != 0) {
+ CT_ERROR("'%s' readdir_r failed (%s)\n", relpath,
+ strerror(errno));
+ err_major++;
+ rc = -errno;
+ goto out;
+ } else if ((rc == 0) && (cookie == NULL)) {
+ /* end of directory */
+ break;
+ }
+
+ if (!strcmp(ent.d_name, ".") ||
+ !strcmp(ent.d_name, ".."))
+ continue;
+
+ /* New relative path */
+ newpath = path_concat(relpath, ent.d_name);
+ if (newpath == NULL) {
+ err_major++;
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ if (ent.d_type == DT_DIR) {
+ rc = ct_import_recurse(newpath);
+ } else {
+ char src[PATH_MAX];
+ char dst[PATH_MAX];
+
+ sprintf(src, "%s/%s", opt.o_hsm_root, newpath);
+ sprintf(dst, "%s/%s", opt.o_dst, newpath);
+ /* Make the target dir in the Lustre fs */
+ rc = ct_mkdir_p(dst);
+ if (rc == 0) {
+ /* Import the file */
+ rc = ct_import_one(src, dst);
+ } else {
+ CT_ERROR("'%s' ct_mkdir_p failed (%s)\n", dst,
+ strerror(-rc));
+ err_major++;
+ }
+ }
+
+ if (rc != 0) {
+ CT_ERROR("'%s' importing failed\n", newpath);
+ if (err_major && opt.o_abort_on_error) {
+ free(newpath);
+ goto out;
+ }
+ }
+ free(newpath);
+ }
+
+ rc = 0;
+out:
+ closedir(dir);
+ return rc;
+}
+
+static int ct_rebind_one(const lustre_fid *old_fid, const lustre_fid *new_fid)
+{
+ char src[PATH_MAX];
+ char dst[PATH_MAX];
+
+ CT_TRACE("rebind "DFID" to "DFID"\n", PFID(old_fid), PFID(new_fid));
+
+ ct_path_archive(src, sizeof(src), opt.o_hsm_root, old_fid);
+ ct_path_archive(dst, sizeof(dst), opt.o_hsm_root, new_fid);
+
+ if (!opt.o_dry_run) {
+ ct_mkdir_p(dst);
+ if (rename(src, dst)) {
+ CT_ERROR("'%s' rename to '%s' failed (%s)\n", src, dst,
+ strerror(errno));
+ return -errno;
+ }
+ /* rename lov file */
+ strncat(src, ".lov", sizeof(src) - strlen(src) - 1);
+ strncat(dst, ".lov", sizeof(dst) - strlen(dst) - 1);
+ if (rename(src, dst))
+ CT_ERROR("'%s' rename to '%s' failed (%s)\n", src, dst,
+ strerror(errno));
+
+ }
+ return 0;
+}
+
+static bool fid_is_file(lustre_fid *fid)
+{
+ return fid_is_norm(fid) || fid_is_igif(fid);
+}
+
+static bool should_ignore_line(const char *line)
+{
+ int i;
+
+ for (i = 0; line[i] != '\0'; i++) {
+ if (isspace(line[i]))
+ continue;
+ else if (line[i] == '#')
+ return true;
+ else
+ return false;
+ }
+
+ return true;
+}
+
+static int ct_rebind_list(const char *list)
+{
+ int rc;
+ FILE *filp;
+ ssize_t r;
+ char *line = NULL;
+ size_t line_size = 0;
+ unsigned int nl = 0;
+ unsigned int ok = 0;
+
+ filp = fopen(list, "r");
+ if (filp == NULL) {
+ CT_ERROR("'%s' open failed (%s)\n", list, strerror(errno));
+ return -errno;
+ }
+
+ /* each line consists of 2 FID */
+ while ((r = getline(&line, &line_size, filp)) != -1) {
+ lustre_fid old_fid;
+ lustre_fid new_fid;
+
+ /* Ignore empty and commented out ('#...') lines. */
+ if (should_ignore_line(line))
+ continue;
+
+ nl++;
+
+ rc = sscanf(line, SFID" "SFID, RFID(&old_fid), RFID(&new_fid));
+ if (rc != 6 || !fid_is_file(&old_fid) ||
+ !fid_is_file(&new_fid)) {
+ CT_ERROR("'%s' FID expected near '%s', line %u\n",
+ list, line, nl);
+ err_major++;
+ continue;
+ }
+
+ if (ct_rebind_one(&old_fid, &new_fid))
+ err_major++;
+ else
+ ok++;
+ }
+
+ fclose(filp);
+
+ if (line)
+ free(line);
+
+ /* return 0 if all rebinds were sucessful */
+ CT_TRACE("'%s' %u lines read, %u rebind successful\n", list, nl, ok);
+
+ return ok == nl ? 0 : -1;
+}
+
+static int ct_rebind(void)
+{
+ int rc;
+
+ if (opt.o_dst) {
+ lustre_fid old_fid;
+ lustre_fid new_fid;
+
+ if (sscanf(opt.o_src, SFID, RFID(&old_fid)) != 3 ||
+ !fid_is_file(&old_fid)) {
+ CT_ERROR("'%s' invalid FID format\n", opt.o_src);
+ return -EINVAL;
+ }
+
+ if (sscanf(opt.o_dst, SFID, RFID(&new_fid)) != 3 ||
+ !fid_is_file(&new_fid)) {
+ CT_ERROR("'%s' invalid FID format\n", opt.o_dst);
+ return -EINVAL;
+ }
+
+ rc = ct_rebind_one(&old_fid, &new_fid);
+
+ return rc;
+ }
+
+ /* o_src is a list file */
+ rc = ct_rebind_list(opt.o_src);
+
+ return rc;
+}
+
+static int ct_dir_level_max(const char *dirpath, __u16 *sub_seqmax)
+{
+ DIR *dir;
+ int rc;
+ __u16 sub_seq;
+ struct dirent ent, *cookie = NULL;
+
+ *sub_seqmax = 0;
+
+ dir = opendir(dirpath);
+ if (dir == NULL) {
+ rc = -errno;
+ CT_ERROR("'%s' failed to open directory (%s)\n", opt.o_hsm_root,
+ strerror(-rc));
+ return rc;
+ }
+
+ while ((rc = readdir_r(dir, &ent, &cookie)) == 0) {
+ if (cookie == NULL)
+ /* end of directory.
+ * rc is 0 and seqmax contains the max value. */
+ goto out;
+
+ if (!strcmp(ent.d_name, ".") || !strcmp(ent.d_name, ".."))
+ continue;
+
+ if (sscanf(ent.d_name, "%hx", &sub_seq) != 1) {
+ CT_TRACE("'%s' unexpected dirname format, "
+ "skip entry.\n", ent.d_name);
+ continue;
+ }
+ if (sub_seq > *sub_seqmax)
+ *sub_seqmax = sub_seq;
+ }
+ rc = -errno;
+ CT_ERROR("'%s' readdir_r failed (%s)\n", dirpath, strerror(-rc));
+
+out:
+ closedir(dir);
+ return rc;
+}
+
+static int ct_max_sequence(void)
+{
+ int rc, i;
+ char path[PATH_MAX];
+ __u64 seq = 0;
+ __u16 subseq;
+
+ strncpy(path, opt.o_hsm_root, sizeof(path));
+ /* FID sequence is stored in top-level directory names:
+ * hsm_root/16bits (high weight)/16 bits/16 bits/16 bits (low weight).
+ */
+ for (i = 0; i < 4; i++) {
+ rc = ct_dir_level_max(path, &subseq);
+ if (rc != 0)
+ return rc;
+ seq |= ((__u64)subseq << ((3 - i) * 16));
+ sprintf(path + strlen(path), "/%04x", subseq);
+ }
+
+ printf("max_sequence: %016Lx\n", seq);
+
+ return 0;
+}
+
+static void handler(int signal)
+{
+ psignal(signal, "exiting");
+ /* If we don't clean up upon interrupt, umount thinks there's a ref
+ * and doesn't remove us from mtab (EINPROGRESS). The lustre client
+ * does successfully unmount and the mount is actually gone, but the
+ * mtab entry remains. So this just makes mtab happier. */
+ llapi_hsm_copytool_unregister(&ctdata);
+ _exit(1);
+}
+
+/* Daemon waits for messages from the kernel; run it in the background. */
+static int ct_daemon(void)
+{
+ int rc;
+
+ rc = daemon(1, 1);
+ if (rc < 0) {
+ CT_ERROR("%d: cannot start as daemon (%s)", getpid(),
+ strerror(errno));
+ return -errno;
+ }
+
+ rc = llapi_hsm_copytool_register(&ctdata, opt.o_mnt, 0,
+ opt.o_archive_cnt, opt.o_archive_id);
+ if (rc < 0) {
+ CT_ERROR("%d: cannot start copytool interface: %s\n", getpid(),
+ strerror(-rc));
+ return rc;
+ }
+
+ signal(SIGINT, handler);
+ signal(SIGTERM, handler);
+
+ while (1) {
+ struct hsm_action_list *hal;
+ struct hsm_action_item *hai;
+ int msgsize;
+ int i = 0;
+
+ CT_TRACE("%d: waiting for message from kernel\n", getpid());
+
+ rc = llapi_hsm_copytool_recv(ctdata, &hal, &msgsize);
+ if (rc == -ESHUTDOWN) {
+ CT_TRACE("%d: shutting down", getpid());
+ break;
+ } else if (rc == -EAGAIN) {
+ continue; /* msg not for us */
+ } else if (rc < 0) {
+ CT_WARN("%d: message receive: (%s)\n", getpid(),
+ strerror(-rc));
+ err_major++;
+ if (opt.o_abort_on_error)
+ break;
+ else
+ continue;
+ }
+
+ CT_TRACE("%d: copytool fs=%s archive#=%d item_count=%d\n",
+ getpid(), hal->hal_fsname, hal->hal_archive_id,
+ hal->hal_count);
+
+ if (strcmp(hal->hal_fsname, fs_name) != 0) {
+ CT_ERROR("'%s' invalid fs name, expecting: %s\n",
+ hal->hal_fsname, fs_name);
+ err_major++;
+ if (opt.o_abort_on_error)
+ break;
+ else
+ continue;
+ }
+
+ hai = hai_zero(hal);
+ while (++i <= hal->hal_count) {
+ if ((char *)hai - (char *)hal > msgsize) {
+ CT_ERROR("'%s' item %d past end of message!\n",
+ opt.o_mnt, i);
+ err_major++;
+ rc = -EPROTO;
+ break;
+ }
+ rc = ct_process_item_async(hai, hal->hal_flags);
+ if (rc < 0)
+ CT_ERROR("'%s' item %d process err: %s\n",
+ opt.o_mnt, i, strerror(-rc));
+ if (opt.o_abort_on_error && err_major)
+ break;
+ hai = hai_next(hai);
+ }
+
+ llapi_hsm_action_list_free(&hal);
+
+ if (opt.o_abort_on_error && err_major)
+ break;
+ }
+
+ llapi_hsm_copytool_unregister(&ctdata);
+
+ return rc;
+}
+
+static int ct_setup(void)
+{
+ int rc;
+
+ /* set llapi message level */
+ llapi_msg_set_level(opt.o_verbose);
+
+ arc_fd = open(opt.o_hsm_root, O_DIRECTORY);
+ if (arc_fd < 0) {
+ CT_ERROR("cannot open archive at '%s': %s\n", opt.o_hsm_root,
+ strerror(errno));
+ return -errno;
+ }
+
+ rc = llapi_search_fsname(opt.o_mnt, fs_name);
+ if (rc) {
+ CT_ERROR("cannot find a Lustre filesystem mounted at: %s\n",
+ opt.o_mnt);
+ return -rc;
+ }
+
+ return rc;
+}
+
+static int ct_cleanup(void)
+{
+ if (arc_fd < 0)
+ return 0;
+
+ if (close(arc_fd) < 0) {
+ CT_ERROR("cannot close archive: %s.\n", strerror(errno));
+ return -errno;
+ }
+
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ int rc;
+
+ strncpy(cmd_name, basename(argv[0]), sizeof(cmd_name));
+ rc = ct_parseopts(argc, argv);
+ if (rc) {
+ CT_ERROR("try '%s --help' for more information.\n", cmd_name);
+ return -rc;
+ }
+
+ ct_setup();
+
+ switch (opt.o_action) {
+ case CA_IMPORT:
+ rc = ct_import_recurse(opt.o_src);
+ break;
+ case CA_REBIND:
+ rc = ct_rebind();
+ break;
+ case CA_MAXSEQ:
+ rc = ct_max_sequence();
+ break;
+ case CA_DAEMON:
+ rc = ct_daemon();
+ break;
+ default:
+ CT_ERROR("no action specified. Try '%s --help' for more "
+ "information.\n", cmd_name);
+ rc = -EINVAL;
+ break;
+ }
+
+ if (opt.o_action != CA_MAXSEQ)
+ CT_TRACE("%s(%d) finished, errs: %d major, %d minor, "
+ "rc=%d (%s)\n", argv[0], getpid(), err_major,
+ err_minor, rc, strerror(-rc));
+
+ ct_cleanup();
+
+ return -rc;
+}
+
*
* Author: Aurelien Degremont <aurelien.degremont@cea.fr>
* Author: JC Lafoucriere <jacques-charles.lafoucriere@cea.fr>
- * Author: Thomas leibovici <thomas.leibovici@cea.fr>
+ * Author: Thomas Leibovici <thomas.leibovici@cea.fr>
+ * Author: Henri Doreau <henri.doreau@cea.fr>
*/
#include <stdlib.h>
#define CT_PRIV_MAGIC 0xC0BE2001
struct hsm_copytool_private {
int magic;
- char *fsname;
+ char *mnt;
+ int mnt_fd;
lustre_kernelcomm kuc;
__u32 archives;
};
+#define CP_PRIV_MAGIC 0x19880429
+struct hsm_copyaction_private {
+ __u32 magic;
+ __s32 data_fd;
+ const struct hsm_copytool_private *ct_priv;
+ struct hsm_copy copy;
+};
+
#include <libcfs/libcfs.h>
/** Register a copytool
* \param[out] priv Opaque private control structure
- * \param fsname Lustre filesystem
+ * \param mnt Lustre filesystem mount point
* \param flags Open flags, currently unused (e.g. O_NONBLOCK)
* \param archive_count
* \param archives Which archive numbers this copytool is responsible for
*/
-int llapi_hsm_copytool_start(struct hsm_copytool_private **priv, char *fsname,
- int flags, int archive_count, int *archives)
+int llapi_hsm_copytool_register(struct hsm_copytool_private **priv,
+ const char *mnt, int flags, int archive_count,
+ int *archives)
{
struct hsm_copytool_private *ct;
int rc;
if (ct == NULL)
return -ENOMEM;
- ct->fsname = malloc(strlen(fsname) + 1);
- if (ct->fsname == NULL) {
+ ct->mnt_fd = open(mnt, O_DIRECTORY | O_RDONLY | O_NONBLOCK);
+ if (ct->mnt_fd < 0) {
+ rc = -errno;
+ goto out_err;
+ }
+
+ ct->mnt = strdup(mnt);
+ if (ct->mnt == NULL) {
rc = -ENOMEM;
goto out_err;
}
- strcpy(ct->fsname, fsname);
+
ct->magic = CT_PRIV_MAGIC;
/* no archives specified means "match all". */
/* Storing archive(s) in lk_data; see mdc_ioc_hsm_ct_start */
ct->kuc.lk_data = ct->archives;
- rc = root_ioctl(ct->fsname, LL_IOC_HSM_CT_START, &(ct->kuc), NULL,
- WANT_ERROR);
+ rc = ioctl(ct->mnt_fd, LL_IOC_HSM_CT_START, &ct->kuc);
+ if (rc < 0) {
+ rc = -errno;
+ llapi_error(LLAPI_MSG_ERROR, rc,
+ "cannot start copytool on '%s'", mnt);
+ goto out_err;
+ } else {
+ rc = 0;
+ }
+
/* Only the kernel reference keeps the write side open */
close(ct->kuc.lk_wfd);
ct->kuc.lk_wfd = 0;
out_kuc:
/* cleanup the kuc channel */
libcfs_ukuc_stop(&ct->kuc);
+
out_err:
- if (ct->fsname)
- free(ct->fsname);
+ if (!(ct->mnt_fd < 0))
+ close(ct->mnt_fd);
+ if (ct->mnt != NULL)
+ free(ct->mnt);
free(ct);
return rc;
}
/** Deregister a copytool
- * Note: under Linux, until llapi_hsm_copytool_fini is called (or the program is
- * killed), the libcfs module will be referenced and unremovable,
- * even after Lustre services stop.
+ * Note: under Linux, until llapi_hsm_copytool_unregister is called
+ * (or the program is killed), the libcfs module will be referenced
+ * and unremovable, even after Lustre services stop.
*/
-int llapi_hsm_copytool_fini(struct hsm_copytool_private **priv)
+int llapi_hsm_copytool_unregister(struct hsm_copytool_private **priv)
{
struct hsm_copytool_private *ct;
+ if (priv == NULL || *priv == NULL)
+ return -EINVAL;
+
ct = *priv;
- if (!ct || (ct->magic != CT_PRIV_MAGIC))
+ if (ct->magic != CT_PRIV_MAGIC)
return -EINVAL;
/* Tell the kernel to stop sending us messages */
ct->kuc.lk_flags = LK_FLG_STOP;
- root_ioctl(ct->fsname, LL_IOC_HSM_CT_START, &(ct->kuc), NULL, 0);
+ ioctl(ct->mnt_fd, LL_IOC_HSM_CT_START, &ct->kuc);
/* Shut down the kernelcomms */
libcfs_ukuc_stop(&ct->kuc);
- free(ct->fsname);
+ close(ct->mnt_fd);
+ free(ct->mnt);
free(ct);
*priv = NULL;
+
return 0;
}
int llapi_hsm_copytool_recv(struct hsm_copytool_private *ct,
struct hsm_action_list **halh, int *msgsize)
{
- struct kuc_hdr *kuch;
- struct hsm_action_list *hal;
- int rc = 0;
+ struct kuc_hdr *kuch;
+ struct hsm_action_list *hal;
+ int rc = 0;
- if (!ct || (ct->magic != CT_PRIV_MAGIC))
+ if (ct == NULL || ct->magic != CT_PRIV_MAGIC)
return -EINVAL;
+
if (halh == NULL || msgsize == NULL)
return -EINVAL;
}
/** Release the action list when done with it. */
-int llapi_hsm_copytool_free(struct hsm_action_list **hal)
+void llapi_hsm_action_list_free(struct hsm_action_list **hal)
{
/* Reuse the llapi_changelog_free function */
- return llapi_changelog_free((struct changelog_ext_rec **)hal);
+ llapi_changelog_free((struct changelog_ext_rec **)hal);
}
+/** Get parent path from mount point and fid.
+ *
+ * \param mnt Filesystem root path.
+ * \param fid Object FID.
+ * \param parent Destination buffer.
+ * \param parent_len Destination buffer size.
+ * \return 0 on success.
+ */
+static int fid_parent(const char *mnt, const lustre_fid *fid, char *parent,
+ size_t parent_len)
+{
+ int rc;
+ int linkno = 0;
+ long long recno = -1;
+ char file[PATH_MAX];
+ char strfid[FID_NOBRACE_LEN + 1];
+ char *ptr;
+
+ snprintf(strfid, sizeof(strfid), DFID_NOBRACE, PFID(fid));
-/**
+ rc = llapi_fid2path(mnt, strfid, file, sizeof(file),
+ &recno, &linkno);
+ if (rc < 0)
+ return rc;
+
+ /* fid2path returns a relative path */
+ rc = snprintf(parent, parent_len, "%s/%s", mnt, file);
+ if (rc >= parent_len)
+ return -ENAMETOOLONG;
+
+ /* remove file name */
+ ptr = strrchr(parent, '/');
+ if (ptr == NULL || ptr == parent) {
+ rc = -EINVAL;
+ } else {
+ *ptr = '\0';
+ rc = 0;
+ }
+
+ return rc;
+}
+
+/** Create the destination volatile file for a restore operation.
+ *
+ * \param hcp Private copyaction handle.
+ * \return 0 on success.
+ */
+static int create_restore_volatile(struct hsm_copyaction_private *hcp)
+{
+ int rc;
+ int fd;
+ char parent[PATH_MAX + 1];
+ const char *mnt = hcp->ct_priv->mnt;
+ struct hsm_action_item *hai = &hcp->copy.hc_hai;
+
+ rc = fid_parent(mnt, &hai->hai_fid, parent, sizeof(parent));
+ if (rc < 0) {
+ /* fid_parent() failed, try to keep on going */
+ llapi_error(LLAPI_MSG_ERROR, rc,
+ "cannot get parent path to restore "DFID
+ "using '%s'", PFID(&hai->hai_fid), mnt);
+ snprintf(parent, sizeof(parent), "%s", mnt);
+ }
+
+ fd = llapi_create_volatile_idx(parent, 0, O_LOV_DELAY_CREATE);
+ if (fd < 0)
+ return fd;
+
+ rc = llapi_fd2fid(fd, &hai->hai_dfid);
+ if (rc < 0)
+ goto err_cleanup;
+
+ hcp->data_fd = fd;
+
+ return 0;
+
+err_cleanup:
+ hcp->data_fd = -1;
+ close(fd);
+
+ return rc;
+}
+
+/** Start processing an HSM action.
* Should be called by copytools just before starting handling a request.
* It could be skipped if copytool only want to directly report an error,
- * \see llapi_hsm_copy_end().
+ * \see llapi_hsm_action_end().
*
- * \param mnt Mount point of the corresponding Lustre filesystem.
- * \param hai The hsm_action_item describing the request they will handle.
- * \param copy Updated by this call. Caller will passed it to
- * llapi_hsm_copy_end()
+ * \param hcp Opaque action handle to be passed to
+ * llapi_hsm_action_progress and llapi_hsm_action_end.
+ * \param ct Copytool handle acquired at registration.
+ * \param hai The hsm_action_item describing the request.
+ * \param is_error Whether this call is just to report an error.
*
* \return 0 on success.
*/
-int llapi_hsm_copy_start(char *mnt, struct hsm_copy *copy,
- const struct hsm_action_item *hai)
+int llapi_hsm_action_begin(struct hsm_copyaction_private **phcp,
+ const struct hsm_copytool_private *ct,
+ const struct hsm_action_item *hai, bool is_error)
{
- int fd;
- int rc;
+ struct hsm_copyaction_private *hcp;
+ int rc;
+
+ hcp = calloc(1, sizeof(*hcp));
+ if (hcp == NULL)
+ return -ENOMEM;
- if (memcpy(©->hc_hai, hai, sizeof(*hai)) == NULL)
- RETURN(-EFAULT);
+ hcp->data_fd = -1;
+ hcp->ct_priv = ct;
+ hcp->copy.hc_hai = *hai;
+ hcp->copy.hc_hai.hai_len = sizeof(*hai);
- rc = get_root_path(WANT_FD, NULL, &fd, mnt, -1);
- if (rc)
- return rc;
+ if (is_error)
+ goto ok_out;
- rc = ioctl(fd, LL_IOC_HSM_COPY_START, copy);
- /* If error, return errno value */
- rc = rc ? -errno : 0;
- close(fd);
+ if (hai->hai_action == HSMA_RESTORE) {
+ rc = create_restore_volatile(hcp);
+ if (rc < 0)
+ goto err_out;
+ }
+
+ rc = ioctl(ct->mnt_fd, LL_IOC_HSM_COPY_START, &hcp->copy);
+ if (rc < 0) {
+ rc = -errno;
+ goto err_out;
+ }
+
+ok_out:
+ hcp->magic = CP_PRIV_MAGIC;
+ *phcp = hcp;
+ return 0;
+
+err_out:
+ if (!(hcp->data_fd < 0))
+ close(hcp->data_fd);
+
+ free(hcp);
return rc;
}
-/**
+/** Terminate an HSM action processing.
* Should be called by copytools just having finished handling the request.
- *
- * \param mnt Mount point of the corresponding Lustre filesystem.
- * \param copy The element used when calling llapi_hsm_copy_start()
- * \param hp A hsm_progress structure describing the final state of the
- * request.
- *
- * There is a special case which can be used only when the copytool cannot
- * start the copy at all and want to directly return an error. In this case,
- * simply fill \a hp structure and set \a copy to NULL. It is useless to call
- * llapi_hsm_copy_start() in this case.
+ * \param hdl[in,out] Handle returned by llapi_hsm_action_start.
+ * \param he[in] The final range of copied data (for copy actions).
+ * \param errval[in] The status code of the operation.
+ * \param flags[in] The flags about the termination status (HP_FLAG_RETRY if
+ * the error is retryable).
*
* \return 0 on success.
*/
-int llapi_hsm_copy_end(char *mnt, struct hsm_copy *copy,
- const struct hsm_progress *hp)
+int llapi_hsm_action_end(struct hsm_copyaction_private **phcp,
+ const struct hsm_extent *he, int flags, int errval)
{
- int end_only = 0;
- int fd;
- int rc;
-
- /* llapi_hsm_copy_start() was skipped, so alloc copy. It will
- * only be used to give the needed progress information. */
- if (copy == NULL) {
- /* This is only ok if there is an error. */
- if (hp->hp_errval == 0)
- return -EINVAL;
-
- copy = (struct hsm_copy *)malloc(sizeof(*copy));
- if (copy == NULL)
- return -ENOMEM;
- end_only = 1;
- copy->hc_hai.hai_cookie = hp->hp_cookie;
- copy->hc_hai.hai_fid = hp->hp_fid;
- copy->hc_hai.hai_action = HSMA_NONE;
+ struct hsm_copyaction_private *hcp;
+ struct hsm_action_item *hai;
+ int rc;
+
+ if (phcp == NULL || *phcp == NULL || he == NULL)
+ return -EINVAL;
+
+ hcp = *phcp;
+
+ if (hcp->magic != CP_PRIV_MAGIC)
+ return -EINVAL;
+
+ hai = &hcp->copy.hc_hai;
+
+ /* In some cases, like restore, 2 FIDs are used.
+ * Set the right FID to use here. */
+ if (hai->hai_action == HSMA_ARCHIVE || hai->hai_action == HSMA_RESTORE)
+ hai->hai_fid = hai->hai_dfid;
+
+ /* Fill the last missing data that will be needed by
+ * kernel to send a hsm_progress. */
+ hcp->copy.hc_flags = flags;
+ hcp->copy.hc_errval = abs(errval);
+
+ hcp->copy.hc_hai.hai_extent = *he;
+
+ rc = ioctl(hcp->ct_priv->mnt_fd, LL_IOC_HSM_COPY_END, &hcp->copy);
+ if (rc) {
+ rc = -errno;
+ goto err_cleanup;
}
- /* Fill the last missing data that will be needed by kernel
- * to send a hsm_progress. */
- copy->hc_flags = hp->hp_flags;
- copy->hc_errval = hp->hp_errval;
- /* Update hai if it has changed since start */
- copy->hc_hai.hai_extent = hp->hp_extent;
- /* In some cases, like restore, 2 FIDs are used. hp knows the right FID
- * to use here. */
- copy->hc_hai.hai_fid = hp->hp_fid;
-
- rc = get_root_path(WANT_FD, NULL, &fd, mnt, -1);
- if (rc)
- goto out_free;
+err_cleanup:
+ if (!(hcp->data_fd < 0))
+ close(hcp->data_fd);
- rc = ioctl(fd, LL_IOC_HSM_COPY_END, copy);
- /* If error, return errno value */
- rc = rc ? -errno : 0;
- close(fd);
+ free(hcp);
+ *phcp = NULL;
-out_free:
- if (end_only)
- free(copy);
+ return rc;
+}
+
+/** Notify a progress in processing an HSM action.
+ * \param hdl[in,out] handle returned by llapi_hsm_action_start.
+ * \param he[in] the range of copied data (for copy actions).
+ * \param hp_flags[in] HSM progress flags.
+ * \return 0 on success.
+ */
+int llapi_hsm_action_progress(struct hsm_copyaction_private *hcp,
+ const struct hsm_extent *he, int hp_flags)
+{
+ int rc;
+ struct hsm_progress hp;
+ struct hsm_action_item *hai;
+
+ if (hcp == NULL || he == NULL)
+ return -EINVAL;
+
+ if (hcp->magic != CP_PRIV_MAGIC)
+ return -EINVAL;
+
+ hai = &hcp->copy.hc_hai;
+
+ memset(&hp, 0, sizeof(hp));
+
+ hp.hp_cookie = hai->hai_cookie;
+ hp.hp_flags = hp_flags;
+
+ /* Progress is made on the data fid */
+ hp.hp_fid = hai->hai_dfid;
+ hp.hp_extent = *he;
+
+ rc = ioctl(hcp->ct_priv->mnt_fd, LL_IOC_HSM_PROGRESS, &hp);
+ if (rc < 0)
+ rc = -errno;
return rc;
}
+/** Get the fid of object to be used for copying data.
+ * @return error code if the action is not a copy operation.
+ */
+int llapi_hsm_action_get_dfid(const struct hsm_copyaction_private *hcp,
+ lustre_fid *fid)
+{
+ const struct hsm_action_item *hai = &hcp->copy.hc_hai;
+
+ if (hcp->magic != CP_PRIV_MAGIC)
+ return -EINVAL;
+
+ if (hai->hai_action != HSMA_RESTORE && hai->hai_action != HSMA_ARCHIVE)
+ return -EINVAL;
+
+ *fid = hai->hai_dfid;
+
+ return 0;
+}
+
/**
- * Copytool progress reporting.
+ * Get a file descriptor to be used for copying data. It's up to the
+ * caller to close the FDs obtained from this function.
*
- * \a hp->hp_errval should be EAGAIN until action is completely finished.
- *
- * \return 0 on success, an error code otherwise.
+ * @retval a file descriptor on success.
+ * @retval a negative error code on failure.
*/
-int llapi_hsm_progress(char *mnt, struct hsm_progress *hp)
+int llapi_hsm_action_get_fd(const struct hsm_copyaction_private *hcp)
{
- int fd;
- int rc;
+ const struct hsm_action_item *hai = &hcp->copy.hc_hai;
- rc = get_root_path(WANT_FD, NULL, &fd, mnt, -1);
- if (rc)
- return rc;
+ if (hcp->magic != CP_PRIV_MAGIC)
+ return -EINVAL;
- rc = ioctl(fd, LL_IOC_HSM_PROGRESS, hp);
- /* If error, save errno value */
- rc = rc ? -errno : 0;
+ if (hai->hai_action != HSMA_RESTORE)
+ return -EINVAL;
- close(fd);
- return rc;
+ return dup(hcp->data_fd);
}
/**
/**
* Send a HSM request to Lustre, described in \param request.
*
- * This request should be allocated with llapi_hsm_user_request_alloc().
+ * \param path Fullpath to the file to operate on.
+ * \param request The request, allocated with llapi_hsm_user_request_alloc().
*
- * \param mnt Should be the Lustre moint point.
* \return 0 on success, an error code otherwise.
*/
-int llapi_hsm_request(char *mnt, struct hsm_user_request *request)
+int llapi_hsm_request(const char *path, const struct hsm_user_request *request)
{
int rc;
int fd;
- rc = get_root_path(WANT_FD, NULL, &fd, mnt, -1);
+ rc = get_root_path(WANT_FD, NULL, &fd, (char *)path, -1);
if (rc)
return rc;
git://git.whamcloud.com / fs / lustre-release.git / commitdiff