|
 |
89a7ba |
From 086d0f865d08ec8f723ef6a7feeb8ec8d9f3e9b5 Mon Sep 17 00:00:00 2001
|
|
|
89a7ba |
From: Lukas Czerner <lczerner@redhat.com>
|
|
|
89a7ba |
Date: Sat, 14 Oct 2017 10:42:30 -0400
|
|
|
89a7ba |
Subject: [PATCH] libext2fs: skip start_blk adjustment when stride and flex_bg
|
|
|
89a7ba |
is set
|
|
|
89a7ba |
|
|
|
89a7ba |
Currently some stride optimization is done in
|
|
|
89a7ba |
ext2fs_allocate_group_table() by adjusting start_blk block where we
|
|
|
89a7ba |
start allocating block, or inode bitmaps.
|
|
|
89a7ba |
|
|
|
89a7ba |
However in flex_bg case this is currently useless since the values are
|
|
|
89a7ba |
going to be overridden anyway. Moreover in flex_bg case the group might
|
|
|
89a7ba |
already be full and the stride optimization will fail. As a result file
|
|
|
89a7ba |
system resize might fail needlessly in some situations.
|
|
|
89a7ba |
|
|
|
89a7ba |
It can be shown by this example:
|
|
|
89a7ba |
|
|
|
89a7ba |
mke2fs -b 1024 -i 1024 -E stride=8192 -t ext4 /dev/loop0 1024000
|
|
|
89a7ba |
resize2fs /dev/loop0 102400000
|
|
|
89a7ba |
resize2fs 1.43.5 (04-Aug-2017)
|
|
|
89a7ba |
Resizing the filesystem on /dev/loop0 to 102400000 (1k) blocks.
|
|
|
89a7ba |
./resize/resize2fs: Could not allocate block in ext2 filesystem while trying to resize /dev/loop0
|
|
|
89a7ba |
Please run 'e2fsck -fy /dev/loop0' to fix the filesystem
|
|
|
89a7ba |
after the aborted resize operation.
|
|
|
89a7ba |
|
|
|
89a7ba |
Fix this by not doing the stride adjustment in case of flex_bg.
|
|
|
89a7ba |
|
|
|
89a7ba |
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
|
|
|
89a7ba |
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
|
|
|
89a7ba |
---
|
|
|
89a7ba |
lib/ext2fs/alloc_tables.c | 2 +-
|
|
|
89a7ba |
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
89a7ba |
|
|
|
89a7ba |
diff --git a/lib/ext2fs/alloc_tables.c b/lib/ext2fs/alloc_tables.c
|
|
|
89a7ba |
index 9f3d4e0..dd6015e 100644
|
|
|
89a7ba |
--- a/lib/ext2fs/alloc_tables.c
|
|
|
89a7ba |
+++ b/lib/ext2fs/alloc_tables.c
|
|
|
89a7ba |
@@ -108,7 +108,7 @@ errcode_t ext2fs_allocate_group_table(ext2_filsys fs, dgrp_t group,
|
|
|
89a7ba |
/*
|
|
|
89a7ba |
* Allocate the block and inode bitmaps, if necessary
|
|
|
89a7ba |
*/
|
|
|
89a7ba |
- if (fs->stride) {
|
|
|
89a7ba |
+ if (fs->stride && !flexbg_size) {
|
|
|
89a7ba |
retval = ext2fs_get_free_blocks2(fs, group_blk, last_blk,
|
|
|
89a7ba |
1, bmap, &start_blk);
|
|
|
89a7ba |
if (retval)
|
|
|
89a7ba |
--
|
|
|
89a7ba |
2.7.5
|
|
|
89a7ba |
|