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Fix handling of maxblkid for raw sends

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Currently, the receive code can create an unreadable dataset from
a correct raw send stream. This is because it is currently
impossible to set maxblkid to a lower value without freeing the
associated object. This means truncating files on the send side
to a non-0 size could result in corruption. This patch solves this
issue by adding a new 'force' flag to dnode_new_blkid() which will
allow the raw receive code to force the DMU to accept the provided
maxblkid even if it is a lower value than the existing one.

For testing purposes the send_encrypted_files.ksh test has been
extended to include a variety of truncated files and multiple
snapshots. It also now leverages the xattrtest command to help
ensure raw receives correctly handle xattrs.

Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #8168 
Closes #8487
This commit is contained in:
Tom Caputi
2019-03-13 13:52:01 -04:00
committed by Brian Behlendorf
parent 146bdc414c
commit 369aa501d1
10 changed files with 156 additions and 55 deletions
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tests/zfs-tests/cmd/xattrtest/xattrtest.c
-10
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@@ -144,11 +144,6 @@ parse_args(int argc, char **argv)
break;
case 'y':
verify = 1;
if (phase != PHASE_ALL) {
fprintf(stderr,
"Error: -y and -o are incompatible.\n");
rc = 1;
}
break;
case 'n':
nth = strtol(optarg, NULL, 0);
@@ -201,11 +196,6 @@ parse_args(int argc, char **argv)
PHASE_ALL, PHASE_INVAL);
rc = 1;
}
if (verify == 1) {
fprintf(stderr,
"Error: -y and -o are incompatible.\n");
rc = 1;
}
break;
default:
rc = 1;