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OpenZFS 4986 - receiving replication stream fails if any snapshot exceeds refquota

Browse Source 
Authored by: Dan McDonald <danmcd@omniti.com>
Reviewed by: John Kennedy <john.kennedy@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Gordon Ross <gordon.ross@nexenta.com>
Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>

OpenZFS-issue: https://www.illumos.org/issues/4986
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/5878fad
This commit is contained in:
Dan McDonald 2016-06-09 12:24:29 -07:00 committed by Brian Behlendorf
parent f8866f8ae3
commit 671c93546c
2 changed files with 121 additions and 19 deletions
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43
lib/libzfs/libzfs_sendrecv.c
View File

@ -26,6 +26,7 @@
* Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>.
* All rights reserved
* Copyright (c) 2013 Steven Hartland. All rights reserved.
* Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
*/
#include <assert.h>
@ -66,7 +67,7 @@ extern void zfs_setprop_error(libzfs_handle_t *, zfs_prop_t, int, char *);
static int zfs_receive_impl(libzfs_handle_t *, const char *, const char *,
recvflags_t *, int, const char *, nvlist_t *, avl_tree_t *, char **, int,
uint64_t *);
uint64_t *, const char *);
static int guid_to_name(libzfs_handle_t *, const char *,
uint64_t, boolean_t, char *);
@ -2621,6 +2622,7 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
nvlist_t *stream_nv = NULL;
avl_tree_t *stream_avl = NULL;
char *fromsnap = NULL;
char *sendsnap = NULL;
char *cp;
char tofs[ZFS_MAXNAMELEN];
char sendfs[ZFS_MAXNAMELEN];
@ -2769,8 +2771,16 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
*/
(void) strlcpy(sendfs, drr->drr_u.drr_begin.drr_toname,
ZFS_MAXNAMELEN);
if ((cp = strchr(sendfs, '@')) != NULL)
if ((cp = strchr(sendfs, '@')) != NULL) {
*cp = '\0';
/*
* Find the "sendsnap", the final snapshot in a replication
* stream. zfs_receive_one() handles certain errors
* differently, depending on if the contained stream is the
* last one or not.
*/
sendsnap = (cp + 1);
}
/* Finally, receive each contained stream */
do {
@ -2783,7 +2793,7 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname,
*/
error = zfs_receive_impl(hdl, destname, NULL, flags, fd,
sendfs, stream_nv, stream_avl, top_zfs, cleanup_fd,
action_handlep);
action_handlep, sendsnap);
if (error == ENODATA) {
error = 0;
break;
@ -2948,7 +2958,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
const char *originsnap, recvflags_t *flags, dmu_replay_record_t *drr,
dmu_replay_record_t *drr_noswap, const char *sendfs, nvlist_t *stream_nv,
avl_tree_t *stream_avl, char **top_zfs, int cleanup_fd,
uint64_t *action_handlep)
uint64_t *action_handlep, const char *finalsnap)
{
zfs_cmd_t zc = {"\0"};
time_t begin_time;
@ -2965,6 +2975,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
nvlist_t *snapprops_nvlist = NULL;
zprop_errflags_t prop_errflags;
boolean_t recursive;
char *snapname = NULL;
begin_time = time(NULL);
@ -2975,7 +2986,6 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
ENOENT);
if (stream_avl != NULL) {
char *snapname;
nvlist_t *fs = fsavl_find(stream_avl, drrb->drr_toguid,
&snapname);
nvlist_t *props;
@ -3316,7 +3326,21 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
ZPROP_N_MORE_ERRORS) == 0) {
trunc_prop_errs(intval);
break;
} else {
} else if (snapname == NULL || finalsnap == NULL ||
strcmp(finalsnap, snapname) == 0 ||
strcmp(nvpair_name(prop_err),
zfs_prop_to_name(ZFS_PROP_REFQUOTA)) != 0) {
/*
* Skip the special case of, for example,
* "refquota", errors on intermediate
* snapshots leading up to a final one.
* That's why we have all of the checks above.
*
* See zfs_ioctl.c's extract_delay_props() for
* a list of props which can fail on
* intermediate snapshots, but shouldn't
* affect the overall receive.
*/
(void) snprintf(tbuf, sizeof (tbuf),
dgettext(TEXT_DOMAIN,
"cannot receive %s property on %s"),
@ -3501,7 +3525,7 @@ static int
zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap,
const char *originsnap, recvflags_t *flags, int infd, const char *sendfs,
nvlist_t *stream_nv, avl_tree_t *stream_avl, char **top_zfs, int cleanup_fd,
uint64_t *action_handlep)
uint64_t *action_handlep, const char *finalsnap)
{
int err;
dmu_replay_record_t drr, drr_noswap;
@ -3597,10 +3621,11 @@ zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap,
if ((cp = strchr(nonpackage_sendfs, '@')) != NULL)
*cp = '\0';
sendfs = nonpackage_sendfs;
VERIFY(finalsnap == NULL);
}
return (zfs_receive_one(hdl, infd, tosnap, originsnap, flags,
&drr, &drr_noswap, sendfs, stream_nv, stream_avl, top_zfs,
cleanup_fd, action_handlep));
cleanup_fd, action_handlep, finalsnap));
} else {
assert(DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) ==
DMU_COMPOUNDSTREAM);
@ -3678,7 +3703,7 @@ zfs_receive(libzfs_handle_t *hdl, const char *tosnap, nvlist_t *props,
VERIFY(cleanup_fd >= 0);
err = zfs_receive_impl(hdl, tosnap, originsnap, flags, infd, NULL, NULL,
stream_avl, &top_zfs, cleanup_fd, &action_handle);
stream_avl, &top_zfs, cleanup_fd, &action_handle, NULL);
VERIFY(0 == close(cleanup_fd));

97
module/zfs/zfs_ioctl.c
View File

@ -22,6 +22,7 @@
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Portions Copyright 2011 Martin Matuska
* Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
* Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
* Copyright 2015 Nexenta Systems, Inc. All rights reserved.
@ -3990,6 +3991,56 @@ next:
}
}
/*
* Extract properties that cannot be set PRIOR to the receipt of a dataset.
* For example, refquota cannot be set until after the receipt of a dataset,
* because in replication streams, an older/earlier snapshot may exceed the
* refquota. We want to receive the older/earlier snapshot, but setting
* refquota pre-receipt will set the dsl's ACTUAL quota, which will prevent
* the older/earlier snapshot from being received (with EDQUOT).
*
* The ZFS test "zfs_receive_011_pos" demonstrates such a scenario.
*
* libzfs will need to be judicious handling errors encountered by props
* extracted by this function.
*/
static nvlist_t *
extract_delay_props(nvlist_t *props)
{
nvlist_t *delayprops;
nvpair_t *nvp, *tmp;
static const zfs_prop_t delayable[] = { ZFS_PROP_REFQUOTA, 0 };
int i;
VERIFY(nvlist_alloc(&delayprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
for (nvp = nvlist_next_nvpair(props, NULL); nvp != NULL;
nvp = nvlist_next_nvpair(props, nvp)) {
/*
* strcmp() is safe because zfs_prop_to_name() always returns
* a bounded string.
*/
for (i = 0; delayable[i] != 0; i++) {
if (strcmp(zfs_prop_to_name(delayable[i]),
nvpair_name(nvp)) == 0) {
break;
}
}
if (delayable[i] != 0) {
tmp = nvlist_prev_nvpair(props, nvp);
VERIFY(nvlist_add_nvpair(delayprops, nvp) == 0);
VERIFY(nvlist_remove_nvpair(props, nvp) == 0);
nvp = tmp;
}
}
if (nvlist_empty(delayprops)) {
nvlist_free(delayprops);
delayprops = NULL;
}
return (delayprops);
}
#ifdef DEBUG
static boolean_t zfs_ioc_recv_inject_err;
#endif
@ -4026,6 +4077,7 @@ zfs_ioc_recv(zfs_cmd_t *zc)
offset_t off;
nvlist_t *props = NULL; /* sent properties */
nvlist_t *origprops = NULL; /* existing properties */
nvlist_t *delayprops = NULL; /* sent properties applied post-receive */
char *origin = NULL;
char *tosnap;
char tofs[ZFS_MAXNAMELEN];
@ -4106,21 +4158,12 @@ zfs_ioc_recv(zfs_cmd_t *zc)
props_error = dsl_prop_set_hasrecvd(tofs);
if (props_error == 0) {
delayprops = extract_delay_props(props);
(void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
props, errors);
}
}
if (zc->zc_nvlist_dst_size != 0 &&
(nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 ||
put_nvlist(zc, errors) != 0)) {
/*
* Caller made zc->zc_nvlist_dst less than the minimum expected
* size or supplied an invalid address.
*/
props_error = SET_ERROR(EINVAL);
}
off = fp->f_offset;
error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd,
&zc->zc_action_handle);
@ -4145,6 +4188,40 @@ zfs_ioc_recv(zfs_cmd_t *zc)
} else {
error = dmu_recv_end(&drc, NULL);
}
/* Set delayed properties now, after we're done receiving. */
if (delayprops != NULL && error == 0) {
(void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
delayprops, errors);
}
}
if (delayprops != NULL) {
/*
* Merge delayed props back in with initial props, in case
* we're DEBUG and zfs_ioc_recv_inject_err is set (which means
* we have to make sure clear_received_props() includes
* the delayed properties).
*
* Since zfs_ioc_recv_inject_err is only in DEBUG kernels,
* using ASSERT() will be just like a VERIFY.
*/
ASSERT(nvlist_merge(props, delayprops, 0) == 0);
nvlist_free(delayprops);
}
/*
* Now that all props, initial and delayed, are set, report the prop
* errors to the caller.
*/
if (zc->zc_nvlist_dst_size != 0 &&
(nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 ||
put_nvlist(zc, errors) != 0)) {
/*
* Caller made zc->zc_nvlist_dst less than the minimum expected
* size or supplied an invalid address.
*/
props_error = SET_ERROR(EINVAL);
}
zc->zc_cookie = off - fp->f_offset;