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Message-ID: <1520001043.24467.324.camel@infinera.com>
Date: Fri, 2 Mar 2018 14:30:45 +0000
From: Joakim Tjernlund <Joakim.Tjernlund@...inera.com>
To: "lczerner@...hat.com" <lczerner@...hat.com>
CC: "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: EXT4-fs (mmcblk0p1): couldn't mount as ext3 due to feature
incompatibilities
On Fri, 2018-03-02 at 13:56 +0100, Lukas Czerner wrote:
> CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
>
>
> On Thu, Mar 01, 2018 at 12:48:58PM +0000, Joakim Tjernlund wrote:
> > Could the above(for ext2 as well) be removed or changed to a non error msg ?
> > It looks like a serious error msg as is now.
> >
> > Jocke
>
> You're trying to mount a file system with features that a kernel you're
> currently using can't recognize or is incompatible with. So no, the
> error can't be just removed, it's there to prevent any further damage.
Not quite, I have a ext4 FS and fstab looks:
LABEL=BOOT /boot auto noatime 1 2
and then I always get this error as kernel tries ext3 first, reports a big fat error,
then kernel tries ext4 and succeeds. I think this should be allowed without having
an error msg printed.
>
> Given that this is a memory card it's likely that it was made on a
> different OS with a defferent e2fsprogs version or a different setting
> and the kernel you're trying to mount it into is likely older.
>
> Please show the output of the following commands
>
> uname -a
> sudo tune2fs -l /dev/mmcblk0p1
cu3-jocke ~ # uname -a
Linux cu3-jocke 4.14.12+ #6 SMP Thu Feb 8 14:05:02 CET 2018 ppc e5500 GNU/Linux
cu3-jocke ~ # tune2fs -l /dev/mmcblk0p1
tune2fs 1.43.6 (29-Aug-2017)
Filesystem volume name: BOOT
Last mounted on: /boot
Filesystem UUID: f0a6a649-ce97-4d82-b190-eb1fc3e348a2
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg
sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags: unsigned_directory_hash
Default mount options: user_xattr acl discard
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 32768
Block count: 131072
Reserved block count: 6553
Free blocks: 116724
Free inodes: 32710
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 31
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Mon Dec 11 17:21:11 2017
Last mount time: Fri Mar 2 13:36:36 2018
Last write time: Fri Mar 2 13:36:36 2018
Mount count: 65
Maximum mount count: -1
Last checked: Mon Dec 11 17:21:11 2017
Check interval: 0 (<none>)
Lifetime writes: 171 MB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
Default directory hash: half_md4
Directory Hash Seed: 52d5b1f5-a98f-43cd-aa48-f9cd3cfa32ea
Journal backup: inode blocks
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