zdb: Dump encrypted write and clone ZIL records

Block pointers are not encrypted in TX_WRITE and TX_CLONE_RANGE
records, so we can dump them, that may be useful for debugging.

Related to #15543.
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Alexander Motin <[email protected]>
Sponsored by:	iXsystems, Inc.
Closes #15629

Author: amotin

cmd/zdb/zdb_il.c

@@ -168,7 +168,7 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, const void *arg)
 	    (u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_offset,
 	    (u_longlong_t)lr->lr_length);
 
-	if (txtype == TX_WRITE2 || verbose < 5)
+	if (txtype == TX_WRITE2 || verbose < 4)
 		return;
 
 	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
@@ -178,6 +178,8 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, const void *arg)
 		    "will claim" : "won't claim");
 		print_log_bp(bp, tab_prefix);
 
+		if (verbose < 5)
+			return;
 		if (BP_IS_HOLE(bp)) {
 			(void) printf("\t\t\tLSIZE 0x%llx\n",
 			    (u_longlong_t)BP_GET_LSIZE(bp));
@@ -202,6 +204,9 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, const void *arg)
 		if (error)
 			goto out;
 	} else {
+		if (verbose < 5)
+			return;
+
 		/* data is stored after the end of the lr_write record */
 		data = abd_alloc(lr->lr_length, B_FALSE);
 		abd_copy_from_buf(data, lr + 1, lr->lr_length);
@@ -217,6 +222,28 @@ zil_prt_rec_write(zilog_t *zilog, int txtype, const void *arg)
 	abd_free(data);
 }
 
+static void
+zil_prt_rec_write_enc(zilog_t *zilog, int txtype, const void *arg)
+{
+	(void) txtype;
+	const lr_write_t *lr = arg;
+	const blkptr_t *bp = &lr->lr_blkptr;
+	int verbose = MAX(dump_opt['d'], dump_opt['i']);
+
+	(void) printf("%s(encrypted)\n", tab_prefix);
+
+	if (verbose < 4)
+		return;
+
+	if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
+		(void) printf("%shas blkptr, %s\n", tab_prefix,
+		    !BP_IS_HOLE(bp) &&
+		    bp->blk_birth >= spa_min_claim_txg(zilog->zl_spa) ?
+		    "will claim" : "won't claim");
+		print_log_bp(bp, tab_prefix);
+	}
+}
+
 static void
 zil_prt_rec_truncate(zilog_t *zilog, int txtype, const void *arg)
 {
@@ -312,11 +339,34 @@ zil_prt_rec_clone_range(zilog_t *zilog, int txtype, const void *arg)
 {
 	(void) zilog, (void) txtype;
 	const lr_clone_range_t *lr = arg;
+	int verbose = MAX(dump_opt['d'], dump_opt['i']);
 
 	(void) printf("%sfoid %llu, offset %llx, length %llx, blksize %llx\n",
 	    tab_prefix, (u_longlong_t)lr->lr_foid, (u_longlong_t)lr->lr_offset,
 	    (u_longlong_t)lr->lr_length, (u_longlong_t)lr->lr_blksz);
 
+	if (verbose < 4)
+		return;
+
+	for (unsigned int i = 0; i < lr->lr_nbps; i++) {
+		(void) printf("%s[%u/%llu] ", tab_prefix, i + 1,
+		    (u_longlong_t)lr->lr_nbps);
+		print_log_bp(&lr->lr_bps[i], "");
+	}
+}
+
+static void
+zil_prt_rec_clone_range_enc(zilog_t *zilog, int txtype, const void *arg)
+{
+	(void) zilog, (void) txtype;
+	const lr_clone_range_t *lr = arg;
+	int verbose = MAX(dump_opt['d'], dump_opt['i']);
+
+	(void) printf("%s(encrypted)\n", tab_prefix);
+
+	if (verbose < 4)
+		return;
+
 	for (unsigned int i = 0; i < lr->lr_nbps; i++) {
 		(void) printf("%s[%u/%llu] ", tab_prefix, i + 1,
 		    (u_longlong_t)lr->lr_nbps);
@@ -327,6 +377,7 @@ zil_prt_rec_clone_range(zilog_t *zilog, int txtype, const void *arg)
 typedef void (*zil_prt_rec_func_t)(zilog_t *, int, const void *);
 typedef struct zil_rec_info {
 	zil_prt_rec_func_t	zri_print;
+	zil_prt_rec_func_t	zri_print_enc;
 	const char		*zri_name;
 	uint64_t		zri_count;
 } zil_rec_info_t;
@@ -341,7 +392,9 @@ static zil_rec_info_t zil_rec_info[TX_MAX_TYPE] = {
 	{.zri_print = zil_prt_rec_remove,   .zri_name = "TX_RMDIR           "},
 	{.zri_print = zil_prt_rec_link,	    .zri_name = "TX_LINK            "},
 	{.zri_print = zil_prt_rec_rename,   .zri_name = "TX_RENAME          "},
-	{.zri_print = zil_prt_rec_write,    .zri_name = "TX_WRITE           "},
+	{.zri_print = zil_prt_rec_write,
+	    .zri_print_enc = zil_prt_rec_write_enc,
+	    .zri_name = "TX_WRITE           "},
 	{.zri_print = zil_prt_rec_truncate, .zri_name = "TX_TRUNCATE        "},
 	{.zri_print = zil_prt_rec_setattr,  .zri_name = "TX_SETATTR         "},
 	{.zri_print = zil_prt_rec_acl,	    .zri_name = "TX_ACL_V0          "},
@@ -358,6 +411,7 @@ static zil_rec_info_t zil_rec_info[TX_MAX_TYPE] = {
 	{.zri_print = zil_prt_rec_rename,   .zri_name = "TX_RENAME_EXCHANGE "},
 	{.zri_print = zil_prt_rec_rename,   .zri_name = "TX_RENAME_WHITEOUT "},
 	{.zri_print = zil_prt_rec_clone_range,
+	    .zri_print_enc = zil_prt_rec_clone_range_enc,
 	    .zri_name = "TX_CLONE_RANGE     "},
 };
 
@@ -384,6 +438,8 @@ print_log_record(zilog_t *zilog, const lr_t *lr, void *arg, uint64_t claim_txg)
 	if (txtype && verbose >= 3) {
 		if (!zilog->zl_os->os_encrypted) {
 			zil_rec_info[txtype].zri_print(zilog, txtype, lr);
+		} else if (zil_rec_info[txtype].zri_print_enc) {
+			zil_rec_info[txtype].zri_print_enc(zilog, txtype, lr);
 		} else {
 			(void) printf("%s(encrypted)\n", tab_prefix);
 		}