c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 02:27:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

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
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/zfs_ioctl.c
+87 -10
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;