Date: Wed, 9 Oct 2019 09:50:22 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r353339 - in stable/11: cddl/contrib/opensolaris/lib/libzfs/common sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201910090950.x999oML3017881@repo.freebsd.org>
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Author: avg Date: Wed Oct 9 09:50:22 2019 New Revision: 353339 URL: https://svnweb.freebsd.org/changeset/base/353339 Log: MFC r352591: MFZoL: Retire send space estimation via ZFS_IOC_SEND Add a small wrapper around libzfs_core's lzc_send_space() to libzfs so that every legacy ZFS_IOC_SEND consumer, along with their userland counterpart estimate_ioctl(), can leverage ZFS_IOC_SEND_SPACE to request send space estimation. The legacy functionality in zfs_ioc_send() is left untouched for compatibility purposes. Obtained from: ZoL Obtained from: zfsonlinux/zfs@cf7684bc8d57 Author: loli10K <ezomori.nozomu@gmail.com> Modified: stable/11/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Directory Properties: stable/11/ (props changed) Modified: stable/11/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c ============================================================================== --- stable/11/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c Wed Oct 9 09:47:00 2019 (r353338) +++ stable/11/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c Wed Oct 9 09:50:22 2019 (r353339) @@ -948,39 +948,32 @@ typedef struct send_dump_data { } send_dump_data_t; static int -estimate_ioctl(zfs_handle_t *zhp, uint64_t fromsnap_obj, - boolean_t fromorigin, enum lzc_send_flags flags, uint64_t *sizep) +zfs_send_space(zfs_handle_t *zhp, const char *snapname, const char *from, + enum lzc_send_flags flags, uint64_t *spacep) { - zfs_cmd_t zc = { 0 }; libzfs_handle_t *hdl = zhp->zfs_hdl; + int error; - assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); - assert(fromsnap_obj == 0 || !fromorigin); + assert(snapname != NULL); + error = lzc_send_space(snapname, from, flags, spacep); - (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); - zc.zc_obj = fromorigin; - zc.zc_sendobj = zfs_prop_get_int(zhp, ZFS_PROP_OBJSETID); - zc.zc_fromobj = fromsnap_obj; - zc.zc_guid = 1; /* estimate flag */ - zc.zc_flags = flags; - - if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_SEND, &zc) != 0) { + if (error != 0) { char errbuf[1024]; (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, - "warning: cannot estimate space for '%s'"), zhp->zfs_name); + "warning: cannot estimate space for '%s'"), snapname); - switch (errno) { + switch (error) { case EXDEV: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "not an earlier snapshot from the same fs")); return (zfs_error(hdl, EZFS_CROSSTARGET, errbuf)); case ENOENT: - if (zfs_dataset_exists(hdl, zc.zc_name, + if (zfs_dataset_exists(hdl, snapname, ZFS_TYPE_SNAPSHOT)) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, - "incremental source (@%s) does not exist"), - zc.zc_value); + "incremental source (%s) does not exist"), + snapname); } return (zfs_error(hdl, EZFS_NOENT, errbuf)); @@ -994,16 +987,15 @@ estimate_ioctl(zfs_handle_t *zhp, uint64_t fromsnap_ob case ERANGE: case EFAULT: case EROFS: - zfs_error_aux(hdl, strerror(errno)); + case EINVAL: + zfs_error_aux(hdl, strerror(error)); return (zfs_error(hdl, EZFS_BADBACKUP, errbuf)); default: - return (zfs_standard_error(hdl, errno, errbuf)); + return (zfs_standard_error(hdl, error, errbuf)); } } - *sizep = zc.zc_objset_type; - return (0); } @@ -1290,13 +1282,22 @@ dump_snapshot(zfs_handle_t *zhp, void *arg) (sdd->fromorigin || sdd->replicate); if (sdd->verbose || sdd->progress) { - (void) estimate_ioctl(zhp, sdd->prevsnap_obj, - fromorigin, flags, &size); - sdd->size += size; + char fromds[ZFS_MAX_DATASET_NAME_LEN]; - send_print_verbose(fout, zhp->zfs_name, - sdd->prevsnap[0] ? sdd->prevsnap : NULL, - size, sdd->parsable); + if (sdd->prevsnap[0] != '\0') { + (void) strlcpy(fromds, zhp->zfs_name, sizeof (fromds)); + *(strchr(fromds, '@') + 1) = '\0'; + (void) strlcat(fromds, sdd->prevsnap, sizeof (fromds)); + } + if (zfs_send_space(zhp, zhp->zfs_name, + sdd->prevsnap[0] ? fromds : NULL, flags, &size) != 0) { + size = 0; /* cannot estimate send space */ + } else { + send_print_verbose(fout, zhp->zfs_name, + sdd->prevsnap[0] ? sdd->prevsnap : NULL, + size, sdd->parsable); + } + sdd->size += size; } if (!sdd->dryrun) { Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Wed Oct 9 09:47:00 2019 (r353338) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Wed Oct 9 09:50:22 2019 (r353339) @@ -4783,6 +4783,9 @@ out: * * outputs: * zc_objset_type estimated size, if zc_guid is set + * + * NOTE: This is no longer the preferred interface, any new functionality + * should be added to zfs_ioc_send_new() instead. */ static int zfs_ioc_send(zfs_cmd_t *zc)
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