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nilfs2: change default of 'errors' mount option to 'remount-ro' mode

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Like ext3, nilfs has 'errors' mount option to allow specifying desired
behavior on severe errors.

Currently, the default action is 'errors=continue' and has potential
to advance filesystem corruption for severe errors.

This will change the action to 'errors=remount-ro' to avoid the issue.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi 2010-04-02 18:02:33 +09:00
parent 73bb48869b
commit 277a6a3417
2 changed files with 5 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
Documentation/filesystems/nilfs2.txt
View file

@ -50,8 +50,8 @@ NILFS2 supports the following mount options:
(*) == default
nobarrier Disables barriers.
errors=continue(*) Keep going on a filesystem error.
errors=remount-ro Remount the filesystem read-only on an error.
errors=continue Keep going on a filesystem error.
errors=remount-ro(*) Remount the filesystem read-only on an error.
errors=panic Panic and halt the machine if an error occurs.
cp=n Specify the checkpoint-number of the snapshot to be
mounted. Checkpoints and snapshots are listed by lscp

6
fs/nilfs2/super.c
View file

@ -470,10 +470,10 @@ static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
if (nilfs_test_opt(sbi, SNAPSHOT))
seq_printf(seq, ",cp=%llu",
(unsigned long long int)sbi->s_snapshot_cno);
if (nilfs_test_opt(sbi, ERRORS_RO))
seq_printf(seq, ",errors=remount-ro");
if (nilfs_test_opt(sbi, ERRORS_PANIC))
seq_printf(seq, ",errors=panic");
if (nilfs_test_opt(sbi, ERRORS_CONT))
seq_printf(seq, ",errors=continue");
if (nilfs_test_opt(sbi, STRICT_ORDER))
seq_printf(seq, ",order=strict");
if (nilfs_test_opt(sbi, NORECOVERY))
@ -631,7 +631,7 @@ nilfs_set_default_options(struct nilfs_sb_info *sbi,
struct nilfs_super_block *sbp)
{
sbi->s_mount_opt =
NILFS_MOUNT_ERRORS_CONT | NILFS_MOUNT_BARRIER;
NILFS_MOUNT_ERRORS_RO | NILFS_MOUNT_BARRIER;
}
static int nilfs_setup_super(struct nilfs_sb_info *sbi)