From: Theodore Ts'o <tytso@mit.edu>
Date: Fri, 1 Jul 2005 00:00:41 +0000 (-0400)
Subject: Change mke2fs to refuse to create filesystems greater than 2*31-1 blocks,
X-Git-Tag: E2FSPROGS-1_38~2
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=675b79c47f7fb437d48ceff82db33c6cc780a508;p=tools%2Fe2fsprogs.git

Change mke2fs to refuse to create filesystems greater than 2*31-1 blocks,
at least unless forced.
---

diff --git a/misc/ChangeLog b/misc/ChangeLog
index 3ad0f53..6a2bd51 100644
--- a/misc/ChangeLog
+++ b/misc/ChangeLog
@@ -1,3 +1,9 @@
+2005-06-30  Theodore Ts'o  <tytso@mit.edu>
+
+	* mke2fs.c (PRS): Do not support filesystems with more 2**31-1
+		blocks, since there may be kernel bugs with such
+		filesystems.
+
 2005-06-26  Theodore Ts'o  <tytso@mit.edu>
 
 	* tune2fs.8.in: Fix minor typos pointed out by Benno Schulenberg.
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 49689c3..2379ddc 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -1352,6 +1352,13 @@ static void PRS(int argc, char *argv[])
 		}
 	}
 
+	if (!force && param.s_blocks_count >= (1 << 31)) {
+		com_err(program_name, 0,
+			_("Filesystem too large.  No more than 2**31-1 blocks\n"
+			  "\t (8TB using a blocksize of 4k) are currently supported."));
+             exit(1);
+	}
+
 	if (inode_size) {
 		if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
 		    inode_size > EXT2_BLOCK_SIZE(&param) ||