Questions tagged [btrfs]
B-tree file system, next-generation Linux file system
313
questions
41
votes
3
answers
9k
views
Does Git prevent data degradation
I read that ZFS and Btrfs use checksums to prevent data degradation and I read that Git has integrity through hashing essentially everything with each commit.
I was going to use a Git server on a ...
40
votes
7
answers
67k
views
Does rsync --inplace write to the entire file, or just to the parts that need to be updated? (for btrfs+rsync backups)
I was reading several guides how combine btrfs snapshots with rsync to make an efficient backup solution with history. However it all depends on if rsync --inplace modifies only those portions of ...
- 3,173
34
votes
2
answers
36k
views
How does btrfs scrub work and what does it do?
What exactly does btrfs scrub do? According to the manual page, which is totally unclear, it does some error checking. What kind of error checking? How reliable is it? Is it able to recover some ...
- 2,381
34
votes
3
answers
39k
views
How to rename a BTRFS subvolume?
I have a BTRFS filesystem with a set of subvolumes in it. So far so good. I need to change the name of a subvolume, unfortunately the btrfs program does not allow me to rename a subvolume. Searching ...
- 811
30
votes
7
answers
19k
views
Finding files with BTRFS Uncorrectable Errors
I have a question concerning unrecoverable errors on a BTRFS file system. Specifically, I've run a BTRFS Scrub recently after experiencing a problem with one of my RAM sticks and it seems to have ...
- 490
28
votes
7
answers
78k
views
Swapon failed: Invalid argument on a Linux system with Btrfs filesystem
What's wrong with this sequence of operation, running on a Debian Squeeze system with a Btrfs filesystem?
$ dd if=/dev/zero of=swapfile2 bs=1024 count=524288
$ sudo mkswap swapfile2
$ sudo chown root:...
- 1,309
23
votes
4
answers
44k
views
How to undelete files on btrfs partition?
How do I undelete (recover) a deleted file on a btrfs partition?
I have not taken a snapshot yet, so I can't use that feature. I know there are some tools for other Linux file systems, but google ...
- 2,144
21
votes
6
answers
26k
views
How to copy a btrfs filesystem
How can make a full copy of the contents of a btrfs filesystem?
By full copy I mean not only the current data, but also different subvolumes with their snapshots, ideally preserving their CoW ...
- 1,441
20
votes
7
answers
27k
views
How to create swapfile on ssd disk with btrfs
I have SSD with btrfs, I tried creating a swapfile like:
dd if=/dev/zero of=swapfile01 bs=1M count=10240
mkswap swapfile01
chmod 600 swapfile01
swapon swapfile01
In dmesg I see
[238434.731654] ...
- 2,381
20
votes
5
answers
38k
views
How to monitor BTRFS filesystem raid for errors?
I saw some documentation on a daemon that can execute a program/script for various BTRFS events, but I cannot find it anymore.
How can I have a script/program be executed on a drive failure for a ...
- 561
20
votes
2
answers
9k
views
btrfs: HUGE metadata allocated
I have a 256GB SSD disk on which I converted my ext4 root FS to btrfs. I erased the ext4 backup subvolume, enabled compression and defragmented recursively to enable it on all files.
btrfs fi df / ...
- 443
18
votes
2
answers
48k
views
how to delete btrfs snapshot?
sudo btrfs subvolume show / outputs
/
Name: @
uuid: 1f0da442-cdf3-144c-a4ce-f6c06248cfde
Parent uuid: -
Creation time: 2014-08-16 19:06:51
Object ...
- 946
17
votes
4
answers
15k
views
should I put my multi-device btrfs filesystem on disk partitions or raw devices?
If I'm going to create a multi-device btrfs filesystem. The official recommendation from the documentation apppears to be to create it on raw devices; i.e. /dev/sdb, /dev/sdc, etc, but this is not ...
- 547
16
votes
2
answers
14k
views
Linux BTRFS - convert to single with failed drive
A small amount of backstory:
I have a small media filesystem, on which I store various movies and TV shows that are used for my HTPC setup. This was originally set up, using btrfs, on a 1TB WD ...
- 326
16
votes
1
answer
7k
views
Can a failed Btrfs drive in RAID-1 be replaced live?
I am trying to decide on a filesystem and would like to know if it is possible to replace a failed drive in btrfs RAID without downtime.
Suppose I create a new btrfs filesystem using the command
...
- 1,034