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Fix zfs incremental send remove '-o' properties 

When receiving an incremental send stream with intermediary snapshots
zfs_receive_one() does not correctly identify the top-level dataset:
consequently we restore said snapshots as if they were children
datasets in the hierarchy, forcing inheritance of any property received
with 'zfs send -o' and effectively removing any locally set value.

The test case did not correctly verify this situation because it uses
adjacent snapshots, basically testing 'zfs send -i' instead of
'zfs send -I': this commit adds an additional intermediary snapshot to
the test script.

Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #7478
This commit is contained in:
LOLi 2018-05-01 05:58:29 +02:00 committed by Brian Behlendorf
parent 20507534d4
commit 3cbe89b12a
2 changed files with 14 additions and 10 deletions
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2
lib/libzfs/libzfs_sendrecv.c
View File

@ -4041,7 +4041,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap,
goto out;
}
if (top_zfs && *top_zfs == NULL)
if (top_zfs && (*top_zfs == NULL || strcmp(*top_zfs, name) == 0))
toplevel = B_TRUE;
if (drrb->drr_type == DMU_OST_ZVOL) {
type = ZFS_TYPE_VOLUME;

22
tests/zfs-tests/tests/functional/cli_root/zfs_receive/receive-o-x_props_override.ksh
View File

@ -113,16 +113,17 @@ log_must eval "zfs send -R $orig@snap1 > $streamfile_repl"
log_must eval "zfs recv $dest < $streamfile_repl"
# Fill the datasets with properties and create an incremental replication stream
log_must zfs snapshot -r $orig@snap2
log_must zfs snapshot -r $orig@snap3
log_must eval "zfs set copies=2 $orig"
log_must eval "zfs set '$userprop:orig'='$userval' $orig"
log_must eval "zfs set '$userprop:orig'='$userval' $origsub"
log_must eval "zfs set '$userprop:snap'='$userval' $orig@snap1"
log_must eval "zfs set '$userprop:snap'='$userval' $origsub@snap2"
log_must eval "zfs send -R -I $orig@snap1 $orig@snap2 > $streamfile_incr"
log_must eval "zfs set '$userprop:snap'='$userval' $origsub@snap3"
log_must eval "zfs send -R -I $orig@snap1 $orig@snap3 > $streamfile_incr"
# Sets various combination of override and exclude options
log_must eval "zfs recv -F -o atime=off -o '$userprop:dest2'='$userval' "\
"-o quota=123456789 -x compression -x '$userprop:orig' " \
"-x '$userprop:snap2' $dest < $streamfile_incr"
"-x '$userprop:snap3' $dest < $streamfile_incr"
# Verify we can correctly override and exclude properties
log_must eval "check_prop_source $dest copies 2 received"
log_must eval "check_prop_source $dest atime off local"
@ -138,9 +139,9 @@ log_must eval "check_prop_missing $destsub '$userprop:orig'"
log_must eval "check_prop_source " \
"$dest@snap1 '$userprop:snap' '$userval' received"
log_must eval "check_prop_source " \
"$destsub@snap2 '$userprop:snap' '$userval' received"
log_must eval "check_prop_missing $dest@snap2 '$userprop:snap2'"
log_must eval "check_prop_missing $destsub@snap2 '$userprop:snap2'"
"$destsub@snap3 '$userprop:snap' '$userval' received"
log_must eval "check_prop_missing $dest@snap3 '$userprop:snap3'"
log_must eval "check_prop_missing $destsub@snap3 '$userprop:snap3'"
# Cleanup
log_must zfs destroy -r -f $orig
log_must zfs destroy -r -f $dest
@ -171,7 +172,8 @@ log_must eval "zfs set compression=gzip $dest"
log_must eval "zfs set '$userprop:dest'='localval' $dest"
# Receive the new stream, verify we preserve locally set properties
log_must zfs snapshot -r $orig@snap2
log_must eval "zfs send -R -I $orig@snap1 $orig@snap2 > $streamfile_incr"
log_must zfs snapshot -r $orig@snap3
log_must eval "zfs send -R -I $orig@snap1 $orig@snap3 > $streamfile_incr"
log_must eval "zfs recv -F -x copies -x compression -x '$userprop:orig' " \
"-x '$userprop:dest' $dest < $streamfile_incr"
log_must eval "check_prop_source $dest '$userprop:dest' 'localval' local"
@ -206,7 +208,8 @@ log_must eval "check_prop_source $destsub quota 0 default"
log_must eval "zfs set quota=123456789 $dest"
log_must eval "zfs set canmount=off $destsub"
log_must zfs snapshot -r $orig@snap2
log_must eval "zfs send -R -I $orig@snap1 $orig@snap2 > $streamfile_incr"
log_must zfs snapshot -r $orig@snap3
log_must eval "zfs send -R -I $orig@snap1 $orig@snap3 > $streamfile_incr"
log_must eval "zfs recv -F -x quota -x canmount $dest < $streamfile_incr"
log_must eval "check_prop_source $dest quota 123456789 local"
log_must eval "check_prop_source $destsub quota 0 default"
@ -233,7 +236,8 @@ log_must eval "zfs set '$userprop:origsub'='$userval' $destsub"
mntpnt=$(get_prop mountpoint $orig)
log_must eval "dd if=/dev/urandom of=$mntpnt/file bs=1024k count=10"
log_must zfs snapshot -r $orig@snap2
log_must eval "zfs send -R -I $orig@snap1 $orig@snap2 > $streamfile_incr"
log_must zfs snapshot -r $orig@snap3
log_must eval "zfs send -R -I $orig@snap1 $orig@snap3 > $streamfile_incr"
log_must eval "dd if=$streamfile_incr of=$streamfile_trun bs=1024k count=9"
# Receive the truncated stream, verify original properties are kept
log_mustnot eval "zfs recv -F -o copies=3 -o quota=987654321 "\