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| author | Theodore Ts'o <tytso@mit.edu> | 2020-02-14 18:11:19 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-19 19:51:55 +0100 |
| commit | c48bf2fcad547900c34845d517d64ee7cdc77b2c (patch) | |
| tree | e8777b7b8f859e52b616d0548559a1a41bddfd49 /fs/ext4/super.c | |
| parent | a5c03b93e7b5f2080cc574ac65312f0433758158 (diff) | |
| download | linux-rt-c48bf2fcad547900c34845d517d64ee7cdc77b2c.tar.gz | |
ext4: improve explanation of a mount failure caused by a misconfigured kernel
commit d65d87a07476aa17df2dcb3ad18c22c154315bec upstream.
If CONFIG_QFMT_V2 is not enabled, but CONFIG_QUOTA is enabled, when a
user tries to mount a file system with the quota or project quota
enabled, the kernel will emit a very confusing messsage:
EXT4-fs warning (device vdc): ext4_enable_quotas:5914: Failed to enable quota tracking (type=0, err=-3). Please run e2fsck to fix.
EXT4-fs (vdc): mount failed
We will now report an explanatory message indicating which kernel
configuration options have to be enabled, to avoid customer/sysadmin
confusion.
Link: https://lore.kernel.org/r/20200215012738.565735-1-tytso@mit.edu
Google-Bug-Id: 149093531
Fixes: 7c319d328505b778 ("ext4: make quota as first class supported feature")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1a9546375f84..e080e90178a0 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -2923,17 +2923,11 @@ static int ext4_feature_set_ok(struct super_block *sb, int readonly) return 0; } -#ifndef CONFIG_QUOTA - if (ext4_has_feature_quota(sb) && !readonly) { +#if !defined(CONFIG_QUOTA) || !defined(CONFIG_QFMT_V2) + if (!readonly && (ext4_has_feature_quota(sb) || + ext4_has_feature_project(sb))) { ext4_msg(sb, KERN_ERR, - "Filesystem with quota feature cannot be mounted RDWR " - "without CONFIG_QUOTA"); - return 0; - } - if (ext4_has_feature_project(sb) && !readonly) { - ext4_msg(sb, KERN_ERR, - "Filesystem with project quota feature cannot be mounted RDWR " - "without CONFIG_QUOTA"); + "The kernel was not built with CONFIG_QUOTA and CONFIG_QFMT_V2"); return 0; } #endif /* CONFIG_QUOTA */ |