fix skipping empty files in backup

alubennikova · alubennikova · commit 798c447be73a · 2017-05-29T12:45:56.000+03:00
diff --git a/data.c b/data.c
@@ -299,7 +299,7 @@ backup_data_file(const char *from_root, const char *to_root,
 	 * If we have pagemap then file can't be a zero size.
 	 * Otherwise, we will clear the last file.
 	 */
-	if (n_blocks_read == n_blocks_skipped)
+	if (n_blocks_read != 0 && n_blocks_read == n_blocks_skipped)
 	{
 		if (remove(to_path) == -1)
 			elog(ERROR, "cannot remove file \"%s\": %s", to_path,

Original file line number	Diff line number	Diff line change
`@@ -299,7 +299,7 @@ backup_data_file(const char from_root, const char to_root,`
`299`	`299`	`* If we have pagemap then file can't be a zero size.`
`300`	`300`	`* Otherwise, we will clear the last file.`
`301`	`301`	`*/`
`302`		`- if (n_blocks_read == n_blocks_skipped)`
	`302`	`+ if (n_blocks_read != 0 && n_blocks_read == n_blocks_skipped)`
`303`	`303`	`{`
`304`	`304`	`if (remove(to_path) == -1)`
`305`	`305`	`elog(ERROR, "cannot remove file \"%s\": %s", to_path,`