From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: tytso@mit.edu
Cc: linux-ext4@vger.kernel.org
Subject: [PATCH 41/39] mke2fs: warn if enabling metadata_csum on a pre-3.18 kernel
Date: Mon, 27 Oct 2014 16:32:31 -0700 [thread overview]
Message-ID: <20141027233231.GF10057@birch.djwong.org> (raw)
In-Reply-To: <20141025205623.532.12119.stgit@birch.djwong.org>
The metadata_csum feature (really, the journal checksum disk format)
didn't stabilize until the 3.18 kernel, at which point the companion
journal_csum feature was turned on by default if metadata_csum was
enabled. Therefore, warn the user if they try to create such a
filesystem on a pre-3.18 kernel.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
misc/mke2fs.c | 8 ++++++++
tests/filter.sed | 1 +
2 files changed, 9 insertions(+)
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 149330c..aeb852f 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -2213,6 +2213,14 @@ profile_error:
blocksize, sys_page_size);
}
+ /* Metadata checksumming wasn't totally stable before 3.18. */
+ if (is_before_linux_ver(3, 18, 0) &&
+ (fs_param.s_feature_ro_compat &
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
+ fprintf(stderr, _("Suggestion: Use Linux kernel >= 3.18 for "
+ "improved stability of the metadata and journal "
+ "checksum features.\n"));
+
/*
* On newer kernels we do have lazy_itable_init support. So pick the
* right default in case ext4 module is not loaded.
diff --git a/tests/filter.sed b/tests/filter.sed
index d9a336c..d07e9b8 100644
--- a/tests/filter.sed
+++ b/tests/filter.sed
@@ -23,3 +23,4 @@ s/\\015//g
/whichever comes first/d
s/, csum 0x\([0-9a-f]*\)//g
s/ csum 0x\([0-9a-f]*\)//g
+/^Suggestion:/d
next prev parent reply other threads:[~2014-10-27 23:32 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-25 20:56 [PATCH 00/39] e2fsprogs October 2014 patchbomb, part 6.1 Darrick J. Wong
2014-10-25 20:56 ` [PATCH 01/39] misc: fix compiler warnings Darrick J. Wong
2014-11-04 16:36 ` Theodore Ts'o
2014-10-25 20:56 ` [PATCH 02/39] e2fuzz: exercise fuzzed blocks more aggressively Darrick J. Wong
2014-11-04 16:36 ` Theodore Ts'o
2014-10-25 20:56 ` [PATCH 03/39] libext2fs: directory iteration mustn't walk off the buffer end Darrick J. Wong
2014-11-04 16:37 ` Theodore Ts'o
2014-10-25 20:56 ` [PATCH 04/39] libext2fs: zero the EA block buffer before filling it Darrick J. Wong
2014-11-04 16:47 ` Theodore Ts'o
2014-10-25 20:56 ` [PATCH 05/39] libext2fs: don't memcpy identical pointers when writing a cache block Darrick J. Wong
2014-11-04 16:48 ` Theodore Ts'o
2014-10-25 20:57 ` [PATCH 06/39] misc: fix broken libmagic interaction with plausibility check Darrick J. Wong
2014-11-04 16:50 ` Theodore Ts'o
2014-10-25 20:57 ` [PATCH 07/39] tune2fs: speed up rewriting extent tree when enabling metadata_csum Darrick J. Wong
2014-11-04 16:52 ` Theodore Ts'o
2014-10-25 20:57 ` [PATCH 08/39] tune2fs: don't change metadata_csum on a mounted fs Darrick J. Wong
2014-11-04 16:52 ` Theodore Ts'o
2014-10-25 20:57 ` [PATCH 09/39] resize2fs: don't exit if shrinking sparse_super2 fs to one bg Darrick J. Wong
2014-10-25 20:57 ` [PATCH 10/39] resize2fs: quickly rewrite extent blocks when moving an inode w/ metadata_csum Darrick J. Wong
2014-10-25 20:57 ` [PATCH 11/39] resize2fs: use old_fs to detect per-bg metadata blocks to free Darrick J. Wong
2014-10-25 20:57 ` [PATCH 12/39] resize2fs: don't interpret bitmap shift while crossing flexbg as raid stride Darrick J. Wong
2014-10-25 20:57 ` [PATCH 13/39] resize2fs: set block_uninit in former last bg when expanding fs Darrick J. Wong
2014-10-27 23:29 ` [PATCH v2 13/39] resize2fs: set bg flags and unused inode count when resizing Darrick J. Wong
2014-10-25 20:57 ` [PATCH 14/39] mke2fs: don't zero inode table blocks that are already zeroed Darrick J. Wong
2014-10-25 20:57 ` [PATCH 15/39] dumpe2fs: 80 column outputs, please Darrick J. Wong
2014-10-25 20:58 ` [PATCH 16/39] dumpe2fs: output cleanup Darrick J. Wong
2014-10-25 20:58 ` [PATCH 17/39] e2fsck: fix dangling pointer when dir_info array is resized Darrick J. Wong
2014-11-05 16:12 ` Theodore Ts'o
2014-10-25 20:58 ` [PATCH 18/39] e2fsck: opportunistically recalculate unused inode count and inode_uninit after pass 5 Darrick J. Wong
2014-10-27 20:18 ` Darrick J. Wong
2014-10-25 20:58 ` [PATCH 19/39] e2fsck: opportunistically set block_uninit " Darrick J. Wong
2014-10-27 23:27 ` [PATCH 19/39] libext2fs: set BLOCK_UNINIT for non-last blockgroups if all blocks are free Darrick J. Wong
2014-10-25 20:58 ` [PATCH 20/39] libext2fs/e2fsck: provide routines to read-ahead metadata Darrick J. Wong
2014-10-25 20:58 ` [PATCH 21/39] e2fsck: read-ahead metadata during passes 1, 2, and 4 Darrick J. Wong
2014-10-25 20:58 ` [PATCH 22/39] libext2fs: ext2fs_new_block2() should call alloc_block hook Darrick J. Wong
2014-10-25 20:58 ` [PATCH 23/39] libext2fs: support BLKZEROOUT/FALLOC_FL_ZERO_RANGE in ext2fs_zero_blocks Darrick J. Wong
2014-10-25 20:58 ` [PATCH 24/39] libext2fs/e2fsck: refactor everyone who writes zero blocks to disk Darrick J. Wong
2014-10-25 20:59 ` [PATCH 25/39] libext2fs: support allocating uninit blocks in bmap2() Darrick J. Wong
2014-10-25 20:59 ` [PATCH 26/39] libext2fs: file IO routines should handle uninit blocks Darrick J. Wong
2014-10-25 20:59 ` [PATCH 27/39] resize2fs: convert fs to and from 64bit mode Darrick J. Wong
2014-10-25 20:59 ` [PATCH 28/39] tests: test resize2fs 32->64 and 64->32bit conversion code Darrick J. Wong
2014-10-25 20:59 ` [PATCH 29/39] libext2fs: find inode goal when allocating blocks Darrick J. Wong
2014-10-25 20:59 ` [PATCH 30/39] libext2fs: find/alloc a range of empty blocks Darrick J. Wong
2014-10-25 20:59 ` [PATCH 31/39] libext2fs: add new hooks to support large allocations Darrick J. Wong
2014-10-25 20:59 ` [PATCH 32/39] libext2fs: implement fallocate Darrick J. Wong
2014-10-25 20:59 ` [PATCH 33/39] libext2fs: use fallocate for creating journals and hugefiles Darrick J. Wong
2014-10-25 21:00 ` [PATCH 34/39] debugfs: implement fallocate Darrick J. Wong
2014-10-25 21:00 ` [PATCH 35/39] tests: test debugfs punch command Darrick J. Wong
2014-10-25 21:00 ` [PATCH 37/39] fuse2fs: translate ACL structures Darrick J. Wong
2014-10-25 21:00 ` [PATCH 38/39] fuse2fs: handle 64-bit dates correctly Darrick J. Wong
2014-10-25 21:00 ` [PATCH 39/39] fuse2fs: implement fallocate Darrick J. Wong
2014-10-27 23:31 ` [PATCH 40/39] e2fsck: fix reporting of unknown htree block inode number Darrick J. Wong
2014-11-05 16:11 ` Theodore Ts'o
2014-10-27 23:32 ` Darrick J. Wong [this message]
2014-11-05 16:20 ` [PATCH 41/39] mke2fs: warn if enabling metadata_csum on a pre-3.18 kernel Theodore Ts'o
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