Questions tagged [journaling]
The journaling tag has no summary.
57 questions
2 votes
1 answer
138 views
How to forget running but canceled transactions in a btrfs recovery?
While I am trying to do a really serious filesystem recovery on btrfs (like as e2fsck -f -y would do on an ext[234]), I get similar error messages: ERROR: commit_root already set when starting ...
- 10.5k
2 votes
0 answers
135 views
Adding a Label to XFS devlog partition
Situation I am setting up a XFS filesystem with an external "devlog" partition. The reason I'm doing this is to save on costs a bit by making a large slow drive for data storage and a small ...
- 21
0 votes
1 answer
341 views
Journaling block device (jbd2) hammering my SSD
Ubuntu MATE 24.04 LTS System monitor in panel shows something like all day long. Hovering the mouse over the image shows disk usage hitting 83.3% at those peaks. When I run sudo iotop, an item that ...
- 107
1 vote
1 answer
172 views
how to make drive bootable
I have an old Debian system whose hard drive failed. I connected the drive to a working system and pulled all the data off of the root partition using dd. It looks to me like all the data is fine, so ...
- 21
0 votes
0 answers
58 views
Can an application control journaled filesystem?
Linux (and UNIX) filesystems featuring journaling are there to prevent filesystem corruption (any maybe file corruption, too). Some of them have mount options to control the details of journaling, and ...
- 1,777
0 votes
1 answer
670 views
reconstructing ext4 inode structure after folder deletion
My ext4 partition that had my whatsapp data had its entire folder deleted ( that is file / folder delete - no partition ). As I understand inodes have the metadata tree for files including their ...
- 133
0 votes
1 answer
2k views
How to enable data=journal ext4 fs mode?
Preface (my 1st attempt ended badly): Fstab adding data=journal crashed my Linux' ext4 upon boot, how to fix? I can't find some reliable step-by-step instructions on How to enable data=journal ...
- 31.3k
5 votes
1 answer
2k views
Is ext4 fast_commit really stable? (Linux 6.3)
It seems I've been too quick to enable fast_commit on most my ext4 file systems and since then I often experienced FS corruptions. I've never ever had this kind of issues with ext4 that has been rock ...
- 59
7 votes
3 answers
8k views
How dangerous is to disable the EXT4 journaling?
I'm verry new to Linux. I have a Raspberry Pi 4 device with Raspberry Pi OS Lite. I use this with 4 HDDs conected to USB as a NAS. The hard drives were formatted in NTFS because I used them in Windows ...
- 243
5 votes
1 answer
559 views
MDADM: Unable to grow raid-6 with journal?
In the past, I expanded/reshaped raid-6 arrays multiple times with mdadm. Today I've added 2 disks to new raid-6 array, and was not able to reshape it. It was different this time: now with journal and ...
- 246
2 votes
1 answer
675 views
How to keep the kernel from accessing the journal on an ext4 partition?
I hope that this is not a duplicate question. I have seen several similar questions, where the answer was to blacklist the respective device or partition. But in my case, I can't do that (see below). ...
- 3,961
1 vote
0 answers
308 views
EXT4 journal=data and mmap
Does enabling data=journal for ext4 make any difference when using mmap() to update a file? The ext4 man page says: journal All data is committed into the journal prior to being written into the main ...
- 150
0 votes
0 answers
152 views
Ensuring EXT4/BTRFS/other_journal_file_system guarantee backups even in power outages
I'm using RSYNC to do periodic backups of my data into an external hard disk formatted in EXT4. I'm using the "hard link option", thus files that haven't changed from the previous backup are ...
1 vote
1 answer
629 views
ext4 does not recognise journal device on boot
I have a system with a somewhat large md RAID5 which is presently running ext4fs. The filesystem is running with an external journal, which is on another md (a RAID1). If I add the journal device with ...
- 131
6 votes
1 answer
4k views
In what ways is the COW filesystem an improvement over the Journaling Filesystem?
I don't think an informative answer exists on u&l or otherwise, which mentions why COW filesystems are a leg-up over any of the three modes of journaling. How does the former provide both superior ...
- 878