[f2fs-dev] [Bug 210797] New: resize.f2fs over 2 (LVM) disks corrupts whole filesystem

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=210797

            Bug ID: 210797
           Summary: resize.f2fs over 2 (LVM) disks corrupts whole
                    filesystem
           Product: File System
           Version: 2.5
    Kernel Version: 5.9.15
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: f2fs
          Assignee: filesystem_f2fs@kernel-bugs.kernel.org
          Reporter: thiemel@centrum.cz
        Regression: No

Scenario: F2FS over 2 LVM volumes; when both volumes size extended, then
resize.f2fs corrupts the F2FS



ftp1 ~ # lvresize -L 4G /dev/vgftp1a/f2fs-testa
  New size (8 extents) matches existing size (8 extents).


ftp1 ~ # lvresize -L 4G /dev/vgftp1b/f2fs-testb
  New size (8 extents) matches existing size (8 extents).


ftp1 ~ # mkfs.f2fs -f -O inode_checksum,sb_checksum,extra_attr -l f2fs-test -c
/dev/vgftp1b/f2fs-testb /dev/vgftp1a/f2fs-testa

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

Info: Disable heap-based policy
Info: Debug level = 0
Info: Label = f2fs-test
Info: Trim is enabled
Info: [/dev/vgftp1a/f2fs-testa] Disk Model: SanDisk SDSSDXPS
Info: [/dev/vgftp1b/f2fs-testb] Disk Model: SanDisk SDSSDXPS
Info: Segments per section = 1
Info: Sections per zone = 1
Info: sector size = 512
Info: total sectors = 16777216 (8192 MB)
Info: zone aligned segment0 blkaddr: 512
Info: format version with
  "Linux version 5.9.15-xeon (root@ftp1.wifizabreh.net) (gcc (Gentoo 9.3.0-r2
p4) 9.3.0, GNU ld (Gentoo 2.33.1 p2) 2.33.1) #2 SMP Sat Dec 19 02:48:01 CET
2020"
Info: [/dev/vgftp1a/f2fs-testa] Discarding device
Info: This device doesn't support BLKSECDISCARD
Info: Discarded 4096 MB
Info: [/dev/vgftp1b/f2fs-testb] Discarding device
Info: This device doesn't support BLKSECDISCARD
Info: Discarded 4096 MB
Info: Overprovision ratio = 2.220%
Info: Overprovision segments = 186 (GC reserved = 98)
Info: format successful


ftp1 ~ # lvresize -L 5G /dev/vgftp1b/f2fs-testb
  Size of logical volume vgftp1b/f2fs-testb changed from 4.00 GiB (8 extents)
to 5.00 GiB (10 extents).
  Logical volume vgftp1b/f2fs-testb successfully resized.


ftp1 ~ # lvresize -L 5G /dev/vgftp1a/f2fs-testa
  Size of logical volume vgftp1a/f2fs-testa changed from 4.00 GiB (8 extents)
to 5.00 GiB (10 extents).
  Logical volume vgftp1a/f2fs-testa successfully resized.


ftp1 ~ # resize.f2fs /dev/vgftp1a/f2fs-testa
Info: [/dev/vgftp1a/f2fs-testa] Disk Model: SanDisk SDSSDXPS
Info: Segments per section = 1
Info: Sections per zone = 1
Info: sector size = 512
Info: total sectors = 10485760 (5120 MB)
Info: MKFS version
  "Linux version 5.9.15-xeon (root@ftp1.wifizabreh.net) (gcc (Gentoo 9.3.0-r2
p4) 9.3.0, GNU ld (Gentoo 2.33.1 p2) 2.33.1) #2 SMP Sat Dec 19 02:48:01 CET
2020"
Info: FSCK version
  from "Linux version 5.9.15-xeon (root@ftp1.wifizabreh.net) (gcc (Gentoo
9.3.0-r2 p4) 9.3.0, GNU ld (Gentoo 2.33.1 p2) 2.33.1) #2 SMP Sat Dec 19
02:48:01 CET 2020"
    to "Linux version 5.9.15-xeon (root@ftp1.wifizabreh.net) (gcc (Gentoo
9.3.0-r2 p4) 9.3.0, GNU ld (Gentoo 2.33.1 p2) 2.33.1) #2 SMP Sat Dec 19
02:48:01 CET 2020"
Info: superblock features = 828 :  extra_attr inode_checksum sb_checksum
Info: superblock encrypt level = 0, salt = 00000000000000000000000000000000
Info: Device[0] : /dev/vgftp1a/f2fs-testa blkaddr = 0--fffff
Info: [/dev/vgftp1b/f2fs-testb] Disk Model: SanDisk SDSSDXPS
Info: Device[1] : /dev/vgftp1b/f2fs-testb blkaddr = 100000--1fffff
Info: total FS sectors = 16777216 (8192 MB)
Info: CKPT version = 611403e1
Info: Duplicate valid checkpoint to mirror position 512 -> 1024
Info: Write valid nat_bits in checkpoint
[migrate_block:  56] Migrate node block 3e00 -> 4e00
[migrate_block:  56] Migrate data block 4400 -> 5000
[FIX] (move_one_curseg_info:2798)  --> Move curseg[0] 3 -> 9 after 4e00

[FIX] (move_one_curseg_info:2798)  --> Move curseg[1] 7ef -> a after 4e00

[FIX] (move_one_curseg_info:2798)  --> Move curseg[2] 3f7 -> b after 4e00

[FIX] (move_one_curseg_info:2798)  --> Move curseg[3] 0 -> 8 after 4e00

[FIX] (move_one_curseg_info:2798)  --> Move curseg[4] 1 -> c after 4e00

[FIX] (move_one_curseg_info:2798)  --> Move curseg[5] 2 -> d after 4e00

Info: Write valid nat_bits in checkpoint
Try to do defragement: Done
[migrate_ssa: 270] Info: Done to migrate SSA blocks: sum_blkaddr = 0x2e00 ->
0x3a00
[migrate_nat: 386] Info: Done to migrate NAT blocks: nat_blkaddr = 0xa00 ->
0xa00
[migrate_sit: 444] Info: Done to restore new SIT blocks: 0x600
Info: Write valid nat_bits in checkpoint
[rebuild_checkpoint: 585] Info: Done to rebuild checkpoint blocks
[update_superblock: 695] Info: Done to update superblock

Done: 0.426219 secs


ftp1 ~ # fsck.f2fs /dev/vgftp1a/f2fs-testa
Info: [/dev/vgftp1a/f2fs-testa] Disk Model: SanDisk SDSSDXPS
Info: Segments per section = 1
Info: Sections per zone = 1
Info: sector size = 512
Info: total sectors = 10485760 (5120 MB)
Segment count (5119) mismatch with total segments from devices (4095)   Can't
find a valid F2FS superblock at 0x0
Segment count (5119) mismatch with total segments from devices (4095)   Can't
find a valid F2FS superblock at 0x1

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