resize.f2fs fails with "Error: Device size is not sufficient for F2FS volume, more segment needed"

[Andreas Kübrich]

Terminal transcript of a simple reproduction:

kuebi@twobuntu:/tmp$ truncate -s 512M testfs # create a (sparse) file to hold a test filesystem
kuebi@twobuntu:/tmp$ mkfs.f2fs testfs

 F2FS-tools: mkfs.f2fs Ver: 1.14.0 (2020-08-24)

Info: Disable heap-based policy
Info: Debug level = 0
Info: Trim is enabled
Info: Segments per section = 1
Info: Sections per zone = 1
Info: sector size = 512
Info: total sectors = 1048576 (512 MB)
Info: zone aligned segment0 blkaddr: 512
Info: format version with
  "Linux version 6.5.0-35-generic (buildd@lcy02-amd64-079) (x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #35~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 7 09:00:52 UTC 2"
Info: [testfs] Discarding device
Info: Overprovision ratio = 10.000%
Info: Overprovision segments = 50 (GC reserved = 28)
Info: format successful
kuebi@twobuntu:/tmp$ truncate -s 1G testfs # grow the backing storage
kuebi@twobuntu:/tmp$ resize.f2fs testfs # try to resize to fit
Info: Segments per section = 1
Info: Sections per zone = 1
Info: sector size = 512
Info: total sectors = 2097152 (1024 MB)
Info: MKFS version
  "Linux version 6.5.0-35-generic (buildd@lcy02-amd64-079) (x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #35~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 7 09:00:52 UTC 2"
Info: FSCK version
  from "Linux version 6.5.0-35-generic (buildd@lcy02-amd64-079) (x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #35~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 7 09:00:52 UTC 2"
    to "Linux version 6.5.0-35-generic (buildd@lcy02-amd64-079) (x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #35~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue May 7 09:00:52 UTC 2"
Info: superblock features = 0 :
Info: superblock encrypt level = 0, salt = 00000000000000000000000000000000
Info: total FS sectors = 1048576 (512 MB)
Info: CKPT version = 420523bb
Info: Duplicate valid checkpoint to mirror position 512 -> 1024
Info: Write valid nat_bits in checkpoint
 Error: Device size is not sufficient for F2FS volume, more segment needed =19508kuebi@twobuntu:/tmp$

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: f2fs-tools 1.14.0-2build1
ProcVersionSignature: Ubuntu 6.5.0-35.35~22.04.1-generic 6.5.13
Uname: Linux 6.5.0-35-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul 1 19:39:01 2024
InstallationDate: Installed on 2021-07-14 (1083 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
SourcePackage: f2fs-tools
UpgradeStatus: Upgraded to jammy on 2022-05-14 (779 days ago)
modified.conffile..etc.init.d.apport: [modified]
mtime.conffile..etc.init.d.apport: 2021-03-24T15:58:15