Gparted corrupts F2FS partition
After I extended a partition containing F2FS with a recent version
of Gparted, the partition no longer mounts. mount reports an error, but fsck.f2fs does not see any problem (well, except for “Invalid CP CRC offset: 0”) and does not fix the file system. A strange behavior for a file system.
losetup /dev/loop0 arch-os.img
mount -t f2fs -o ro /dev/loop0 /root/mnt/temp
[ 6890.647749] F2FS-fs (loop0): Wrong valid_user_blocks: 16040048,
user_block_count: 10016768
[ 6890.647808] F2FS-fs (loop0): Failed to get valid F2FS checkpoint
losetup -d /dev/loop0
fsck.f2fs arch-os.img
Info: Segments per section = 1
Info: Sections per zone = 1
Info: sector size = 512
Info: total sectors = 162916352 (79549 MB)
Info: MKFS version
"Linux version 4.4.1-2-ARCH (builduser@...) (gcc version 5.3.0
(GCC) ) #1 SMP PREEMPT Wed Feb 3 13:12:33 UTC 2016"
Info: FSCK version
from "Linux version 5.7.12-arch1-1 (linux@...) (gcc version
10.1.0 (GCC), GNU ld (GNU Binutils) 2.34.0) #1 SMP PREEMPT Fri, 31 Jul
2020 17:38:22 +0000"
to "Linux version 5.11.7-arch1-1 (linux@...) (gcc (GCC)
10.2.0, GNU ld (GNU Binutils) 2.36.1) #1 SMP PREEMPT Wed, 17 Mar 2021
16:59:58 +0000"
Info: superblock features = 0 :
Info: superblock encrypt level = 0, salt = 00000000000000000000000000000000
Info: total FS sectors = 162916352 (79549 MB)
Invalid CP CRC offset: 0
Info: CKPT version = a14d4c
Info: Checked valid nat_bits in checkpoint
Info: checkpoint state = 81 : nat_bits unmount
[FSCK] Unreachable nat entries [Ok..] [0x0]
[FSCK] SIT valid block bitmap checking [Ok..]
[FSCK] Hard link checking for regular file [Ok..] [0x719]
[FSCK] valid_block_count matching with CP [Ok..] [0xf4c070]
[FSCK] valid_node_count matching with CP (de lookup) [Ok..] [0xe242a]
[FSCK] valid_node_count matching with CP (nat lookup) [Ok..] [0xe242a]
[FSCK] valid_inode_count matched with CP [Ok..] [0xe0470]
[FSCK] free segment_count matched with CP [Ok..] [0x1d6b]
[FSCK] next block offset is free [Ok..]
[FSCK] fixing SIT types
[FSCK] other corrupted bugs [Ok..]
Done: 14.100000 secs
f2fs-tools 1.14.0
of Gparted, the partition no longer mounts. mount reports an error, but fsck.f2fs does not see any problem (well, except for “Invalid CP CRC offset: 0”) and does not fix the file system. A strange behavior for a file system.
losetup /dev/loop0 arch-os.img
mount -t f2fs -o ro /dev/loop0 /root/mnt/temp
[ 6890.647749] F2FS-fs (loop0): Wrong valid_user_blocks: 16040048,
user_block_count: 10016768
[ 6890.647808] F2FS-fs (loop0): Failed to get valid F2FS checkpoint
losetup -d /dev/loop0
fsck.f2fs arch-os.img
Info: Segments per section = 1
Info: Sections per zone = 1
Info: sector size = 512
Info: total sectors = 162916352 (79549 MB)
Info: MKFS version
"Linux version 4.4.1-2-ARCH (builduser@...) (gcc version 5.3.0
(GCC) ) #1 SMP PREEMPT Wed Feb 3 13:12:33 UTC 2016"
Info: FSCK version
from "Linux version 5.7.12-arch1-1 (linux@...) (gcc version
10.1.0 (GCC), GNU ld (GNU Binutils) 2.34.0) #1 SMP PREEMPT Fri, 31 Jul
2020 17:38:22 +0000"
to "Linux version 5.11.7-arch1-1 (linux@...) (gcc (GCC)
10.2.0, GNU ld (GNU Binutils) 2.36.1) #1 SMP PREEMPT Wed, 17 Mar 2021
16:59:58 +0000"
Info: superblock features = 0 :
Info: superblock encrypt level = 0, salt = 00000000000000000000000000000000
Info: total FS sectors = 162916352 (79549 MB)
Invalid CP CRC offset: 0
Info: CKPT version = a14d4c
Info: Checked valid nat_bits in checkpoint
Info: checkpoint state = 81 : nat_bits unmount
[FSCK] Unreachable nat entries [Ok..] [0x0]
[FSCK] SIT valid block bitmap checking [Ok..]
[FSCK] Hard link checking for regular file [Ok..] [0x719]
[FSCK] valid_block_count matching with CP [Ok..] [0xf4c070]
[FSCK] valid_node_count matching with CP (de lookup) [Ok..] [0xe242a]
[FSCK] valid_node_count matching with CP (nat lookup) [Ok..] [0xe242a]
[FSCK] valid_inode_count matched with CP [Ok..] [0xe0470]
[FSCK] free segment_count matched with CP [Ok..] [0x1d6b]
[FSCK] next block offset is free [Ok..]
[FSCK] fixing SIT types
[FSCK] other corrupted bugs [Ok..]
Done: 14.100000 secs
f2fs-tools 1.14.0