Questions tagged [btrfs]
A volume-managing, snapshot-supporting copy-on-write (COW) filesystem included in the Linux kernel.
847 questions
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I am having BTRFS error. Does not know what it is?
I am using Parrot OS and doing just regular stuff (web surfing etc) and encounter this error. It is a File system error but could not figure out what this mean and how to resolve it. This is my first ...
0votes
1answer
33views
btrfs: unrecognized mount option 'errors=continue'
Doesn't btrfs support errors=continue?
1vote
1answer
29views
What does "BTRFS warning (device nvme0n1p7): devid 1 physical 0 len 4194304 inside the reserved space" mean?
On mount, I see the following warning in dmesg: [ 0.913159] BTRFS warning (device nvme0n1p7): devid 1 physical 0 len 4194304 inside the reserved space More log context: [ 0.909896] BTRFS: ...
3votes
2answers
217views
User permissions on shared files in dual boot system (Windows, Linux): unable to edit shared file on Linux
I'm running Windows 10 & Fedora Linux 40 KDE Plasma on the same system. Each OS is installed on a different physical drive. I also have an additional SSD drive mounted on the system, which is ...
- 33
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1answer
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What is the minimal btrfs sector size?
I am thinking on using btrfs for a data volume with many small files. It is unclear, what the doc states about the minimal possible block size. It looks, they and we are on a very different edges of ...
- 10.3k
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Is this possible to create raid1 from 8TB and 4TB+4TB disks, eg. stripe 4+4 + mirror 8?
I have one 8TB and two 4TB disks. I am curious if I am able to create 8TB raid from 8+4+4 disks? I tried this sudo mkfs.btrfs -f -m raid1 -d raid1 /dev/sdc1 /dev/sdd1 /dev/cdb1 but this creates only ...
- 437
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1answer
63views
Does BTRFS "dup" use one partition or two?
btrfs.readthedocs.io describes the "dup" profile as duplicating data on a single "device". The description, in multiple locations on that website, fails to clarify if they mean one ...
- 278
1vote
1answer
60views
Should I use physical or logical sector size with LUKS?
I have an external HDD (not ssd) which reports: Sector Sizes: 512 bytes logical, 4096 bytes physical Should i use --sector-size 512 or --sector-size 4096 with cryptosetup LuksFormat? Using ...
- 620
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BTRFS moving to larger hard drive
I want to move a BTRFS hard drive (Storage10TB) to a newer and larger hard drive on Ubuntu (Storage24TB). The old disk is mounted as home/user/Data and the new one is currently mounted via USB. I ...
- 101
1vote
1answer
149views
Best way to show/visualize btrfs disk usage?
I know about btrfs quota (no thanks) and btrfs filesystem du -s (which I think is rather useless - see below). It has always bothered be with btrfs that I have no good way of seeing btrfs disk usage ...
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Error in btrfs-receive when directory was replaced with subvolume
One the directories in my machine has a high turn-over of very large files, so as I was snapshotting the file-system, those files began to fill-up my hard-drive. I transformed it into a btrfs ...
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How to get alerts on btrfs raid issues/events?
When moving from md-raid to btrfs raid, I am missing one feature from mdadm.conf: PROGRAM /sbin/mdadm-alert.sh This will trigger a script on any md-raid issues or important events. I use this in ...
- 620
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1answer
46views
BTRFS volume unreadable after attempting to btrfs device add -f a USB
Recently, my BTRFS volume (/dev/sdc2) had began to report that it was "too full" to do anything, so I went into my installation USB to try to btrfs balance it. However, balancing was ...
0votes
1answer
122views
btrfs data integrity checksum under mdadm raid
I found several places suggesting to use btrfs under mdraid (mdadm) or LVM Raid. But nobody expands on how that works when you have data checksum issues! My main concern of not using btrfs native raid,...
- 620
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Lost `snapshots` subvolumes in SLES15; is there a way to recover them?
When inspecting logs for a different issue, I realized that a host had lost its snapshots. As the event must have been more then 6 months ago, there are no more logs to show details, but the mount for ...
- 1,683
