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From: Stephanos Mallouris <stephanos.mallouris@gmail.com>
To: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [f2fs-dev] problem with f2fs android partition
Date: Wed, 27 Nov 2019 10:22:35 +0200
Message-ID: <CAPfgDnDP8WCxL0s_2ct5egby1c-84rs9TmveHjb2TQ_1aW-4Uw@mail.gmail.com> (raw)
In-Reply-To: <20191126183448.GB5510@jaegeuk-macbookpro.roam.corp.google.com>

Dear Kim ,

Regarding the question:

"Hmm, # of valid blocks is 0, which is really impossible.
 Do you have original backed up image? I think at some point the image
 was overwritten when fsck.f2fs tried to fix.
 "

I do have the original dump raw image. Please advice actions
to assist in recovering it.

I did a dd to an external drive, and from where i tried unsuccessful so far.
I use the following command

sudo dd if=mmcblk0p49.raw bs=512 oflag=sync status=progress of=/dev/sda1

mmcblk0p49.raw is the backup partitioned.

Thanks in advance

Stephanos M.


On 11/26/19, Jaegeuk Kim <jaegeuk@kernel.org> wrote:
> On 11/26, Stephanos Mallouris wrote:
>> Dear Kim,
>>
>> Thanks for getting back to me.
>>
>> I executed the command  fsck.f2fs -d 3 -f /dev/sdc1
>> and it gave me the following information:
>>
>> Info: Debug level = 3
>> Info: Force to fix corruption
>> Info: sector size = 512
>> Info: total sectors = 22310913 (10894 MB)
>> Info: MKFS version
>>   "Linux version 4.1.46-EliteKernelReborn-v5+ (hassanmirza01@ubuntu)
>> (gcc version 4.9 20150123 (prerelease) (GCC) ) #1 SMP PREEMPT Fri Jan
>> 19 17:16:04 PKT 2018"
>> Info: FSCK version
>>   from "Linux version 4.4.0-169-generic (buildd@lgw01-amd64-022) (gcc
>> version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12) ) #198-Ubuntu
>> SMP Tue Nov 12 10:34:23 UTC 2019"
>>     to "Linux version 4.4.0-169-generic (buildd@lgw01-amd64-022) (gcc
>> version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12) ) #198-Ubuntu
>> SMP Tue Nov 12 10:34:23 UTC 2019"
>> Info: superblock features = 0 :
>> Info: superblock encrypt level = 0, salt =
>> 00000000000000000000000000000000
>>
>> +--------------------------------------------------------+
>> | Super block                                            |
>> +--------------------------------------------------------+
>> magic                         		[0xf2f52010 : 4076150800]
>> major_ver                     		[0x       1 : 1]
>> volum_name                    		[]
>> minor_ver                     		[0x       7 : 7]
>> log_sectorsize                		[0x       9 : 9]
>> log_sectors_per_block         		[0x       3 : 3]
>> log_blocksize                 		[0x       c : 12]
>> log_blocks_per_seg            		[0x       9 : 9]
>> segs_per_sec                  		[0x       1 : 1]
>> secs_per_zone                 		[0x       1 : 1]
>> checksum_offset               		[0x       0 : 0]
>> block_count                   		[0x  2a8e00 : 2788864]
>> section_count                 		[0x    151f : 5407]
>> segment_count                 		[0x    1546 : 5446]
>> segment_count_ckpt            		[0x       2 : 2]
>> segment_count_sit             		[0x       2 : 2]
>> segment_count_nat             		[0x      18 : 24]
>> segment_count_ssa             		[0x       b : 11]
>> segment_count_main            		[0x    151f : 5407]
>> segment0_blkaddr              		[0x     200 : 512]
>> cp_blkaddr                    		[0x     200 : 512]
>> sit_blkaddr                   		[0x     600 : 1536]
>> nat_blkaddr                   		[0x     a00 : 2560]
>> ssa_blkaddr                   		[0x    3a00 : 14848]
>> main_blkaddr                  		[0x    5000 : 20480]
>> root_ino                      		[0x       3 : 3]
>> node_ino                      		[0x       1 : 1]
>> meta_ino                      		[0x       2 : 2]
>> cp_payload                    		[0x       0 : 0]
>> version                       Linux version 4.4.0-169-generic
>> (buildd@lgw01-amd64-022) (gcc version 5.4.0 20160609 (Ubuntu
>> 5.4.0-6ubuntu1~16.04.12) ) #198-Ubuntu SMP Tue Nov 12 10:34:23 UTC
>> 2019
>> Info: total FS sectors = 22310912 (10894 MB)
>> Info: CKPT version = 1307e4
>>
>> +--------------------------------------------------------+
>> | Checkpoint                                             |
>> +--------------------------------------------------------+
>> checkpoint_ver                		[0x  1307e4 : 1247204]
>> user_block_count              		[0x  289400 : 2659328]
>> valid_block_count             		[0x       0 : 0]
>
> Hmm, # of valid blocks is 0, which is really impossible.
> Do you have original backed up image? I think at some point the image
> was overwritten when fsck.f2fs tried to fix.
>
>> rsvd_segment_count            		[0x      70 : 112]
>> overprov_segment_count        		[0x      d5 : 213]
>> free_segment_count            		[0x    1519 : 5401]
>> alloc_type[CURSEG_HOT_NODE]   		[0x       1 : 1]
>> alloc_type[CURSEG_WARM_NODE]  		[0x       1 : 1]
>> alloc_type[CURSEG_COLD_NODE]  		[0x       1 : 1]
>> cur_node_segno[0]             		[0x       3 : 3]
>> cur_node_segno[1]             		[0x       4 : 4]
>> cur_node_segno[2]             		[0x       5 : 5]
>> cur_node_blkoff[0]            		[0x       0 : 0]
>> cur_node_blkoff[1]            		[0x       0 : 0]
>> cur_node_blkoff[2]            		[0x       0 : 0]
>> alloc_type[CURSEG_HOT_DATA]   		[0x       1 : 1]
>> alloc_type[CURSEG_WARM_DATA]  		[0x       1 : 1]
>> alloc_type[CURSEG_COLD_DATA]  		[0x       1 : 1]
>> cur_data_segno[0]             		[0x       0 : 0]
>> cur_data_segno[1]             		[0x       1 : 1]
>> cur_data_segno[2]             		[0x       2 : 2]
>> cur_data_blkoff[0]            		[0x       0 : 0]
>> cur_data_blkoff[1]            		[0x       0 : 0]
>> cur_data_blkoff[2]            		[0x       0 : 0]
>> ckpt_flags                    		[0x       1 : 1]
>> cp_pack_total_block_count     		[0x       8 : 8]
>> cp_pack_start_sum             		[0x       1 : 1]
>> valid_node_count              		[0x       0 : 0]
>> valid_inode_count             		[0x       0 : 0]
>> next_free_nid                 		[0x   14105 : 82181]
>> sit_ver_bitmap_bytesize       		[0x      40 : 64]
>> nat_ver_bitmap_bytesize       		[0x     300 : 768]
>> checksum_offset               		[0x     ffc : 4092]
>> elapsed_time                  		[0x 167a468 : 23569512]
>> sit_nat_version_bitmap[0]     		[0x      79 : 121]
>>
>>
>> [lookup_nat_in_journal:1515] ==> Found nid [0x4bb2] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x6ba0] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x783c] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xa0ec] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xab88] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xadcd] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xb19c] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xb431] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xb8f4] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xbf40] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xce28] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xd299] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xd56c] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xd8d3] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xe527] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xe67d] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xf88c] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0xfc96] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x10271] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x111d6] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x1154e] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x11b66] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x1271e] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x12abc] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x1339b] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x137d2] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x139ae] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x14363] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x146a2] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x151a3] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x151da] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x15580] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x15744] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x158eb] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x16030] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x1632b] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x16722] in nat cache
>> [lookup_nat_in_journal:1515] ==> Found nid [0x16c38] in nat cache
>> [build_nat_area_bitmap:1718] valid nat entries (block_addr != 0x0) [0x
>>       0 : 0]
>> [build_sit_area_bitmap:1214] Blocks [0x0 : 0] Free Segs [0x1519 : 5401]
>>
>> Info: checkpoint state = 1 :  unmount
>> [ASSERT] (sanity_check_nid: 362)  --> nid[0x3] ino is 0
>>
>> [FSCK] Unreachable nat entries                        [Ok..] [0x0]
>> [FSCK] SIT valid block bitmap checking                [Ok..]
>> [FSCK] Hard link checking for regular file            [Ok..] [0x0]
>> [FSCK] valid_block_count matching with CP             [Ok..] [0x0]
>> [FSCK] valid_node_count matcing with CP (de lookup)   [Ok..] [0x0]
>> [FSCK] valid_node_count matcing with CP (nat lookup)  [Ok..] [0x0]
>> [FSCK] valid_inode_count matched with CP              [Ok..] [0x0]
>> [FSCK] free segment_count matched with CP             [Ok..] [0x1519]
>> [FSCK] next block offset is free                      [Ok..]
>> [FSCK] fixing SIT types
>> [FSCK] other corrupted bugs                           [Fail]
>> [move_curseg_info:1471] Move curseg[0] 0 -> 0 after 5000
>> [move_curseg_info:1471] Move curseg[1] 1 -> 1 after 5000
>> [move_curseg_info:1471] Move curseg[2] 2 -> 2 after 5000
>> [move_curseg_info:1471] Move curseg[3] 3 -> 3 after 5000
>> [move_curseg_info:1471] Move curseg[4] 4 -> 4 after 5000
>> [move_curseg_info:1471] Move curseg[5] 5 -> 5 after 5000
>>
>> Done.
>>
>>
>> It still give the same error trying to mount the partiotion.
>> [57765.609319] F2FS-fs (sdc1): Failed to read root inode
>> [57765.651048] F2FS-fs (sdc1): Failed to read root inode
>> [58015.507861] F2FS-fs (sdc1): Failed to read root inode
>> [58015.563422] F2FS-fs (sdc1): Failed to read root inode
>>
>> Please advice and assist if possible.
>>
>> Kindest Regards,
>>
>> Stephanos Mallouris
>>
>> On 11/25/19, Jaegeuk Kim <jaegeuk@kernel.org> wrote:
>> > Hi,
>> >
>> > On 11/22, Stephanos Mallouris wrote:
>> >> Dear all,
>> >>
>> >> I have backup my f2fs android partition via netcat and adb.
>> >> After loosing the original partition, tried to restore it on a local
>> >> drive and access it via linux but i am encountering the following
>> >> issues:
>> >>
>> >> A. trying the command
>> >>
>> >>  sudo mount -t f2fs /dev/sdc1 /mnt
>> >>
>> >> gives the following error
>> >>
>> >>  F2FS-fs (sdc1): Failed to read root inode
>> >>
>> >> B1. Tried to fsck the file system , see bellow:
>> >>
>> >> sudo fsck.f2fs -a  /dev/sdc1
>> >>
>> >> result:
>> >>
>> >> Info: Fix the reported corruption.
>> >> Info: sector size = 512
>> >> Info: total sectors = 22310913 (10894 MB)
>> >> Info: MKFS version
>> >>   "Linux version 4.1.46-EliteKernelReborn-v5+ (hassanmirza01@ubuntu)
>> >> (gcc version 4.9 20150123 (prerelease) (GCC) ) #1 SMP PREEMPT Fri Jan
>> >> 19 17:16:04 PKT 2018"
>> >> Info: FSCK version
>> >>   from "Linux version 4.4.0-169-generic (buildd@lgw01-amd64-022) (gcc
>> >> version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12) ) #198-Ubuntu
>> >> SMP Tue Nov 12 10:34:23 UTC 2019"
>> >>     to "Linux version 4.4.0-169-generic (buildd@lgw01-amd64-022) (gcc
>> >> version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12) ) #198-Ubuntu
>> >> SMP Tue Nov 12 10:34:23 UTC 2019"
>> >> Info: superblock features = 0 :
>> >> Info: superblock encrypt level = 0, salt =
>> >> 00000000000000000000000000000000
>> >> Info: total FS sectors = 22310912 (10894 MB)
>> >> Info: CKPT version = 1307e4
>> >> Info: No error was reported
>> >>
>> >> Still unable to mount the partiotion , gives the same error.
>> >>
>> >> B2. Tried
>> >> sudo fsck.f2fs -f  /dev/sdc1
>> >
>> > Could you try: fsck.f2fs -d 3 -f /dev/sdc1?
>> > It seems you didn't back up the entire partition which is missing root
>> > inode
>> > block.
>> >
>> > Thanks,
>> >
>> >>
>> >> result
>> >>
>> >> Info: Force to fix corruption
>> >> Info: sector size = 512
>> >> Info: total sectors = 22310913 (10894 MB)
>> >> Info: MKFS version
>> >>   "Linux version 4.1.46-EliteKernelReborn-v5+ (hassanmirza01@ubuntu)
>> >> (gcc version 4.9 20150123 (prerelease) (GCC) ) #1 SMP PREEMPT Fri Jan
>> >> 19 17:16:04 PKT 2018"
>> >> Info: FSCK version
>> >>   from "Linux version 4.4.0-169-generic (buildd@lgw01-amd64-022) (gcc
>> >> version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12) ) #198-Ubuntu
>> >> SMP Tue Nov 12 10:34:23 UTC 2019"
>> >>     to "Linux version 4.4.0-169-generic (buildd@lgw01-amd64-022) (gcc
>> >> version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12) ) #198-Ubuntu
>> >> SMP Tue Nov 12 10:34:23 UTC 2019"
>> >> Info: superblock features = 0 :
>> >> Info: superblock encrypt level = 0, salt =
>> >> 00000000000000000000000000000000
>> >> Info: total FS sectors = 22310912 (10894 MB)
>> >> Info: CKPT version = 1307e4
>> >> Info: checkpoint state = 1 :  unmount
>> >> [ASSERT] (sanity_check_nid: 362)  --> nid[0x3] ino is 0
>> >>
>> >> [FSCK] Unreachable nat entries                        [Ok..] [0x0]
>> >> [FSCK] SIT valid block bitmap checking                [Ok..]
>> >> [FSCK] Hard link checking for regular file            [Ok..] [0x0]
>> >> [FSCK] valid_block_count matching with CP             [Ok..] [0x0]
>> >> [FSCK] valid_node_count matcing with CP (de lookup)   [Ok..] [0x0]
>> >> [FSCK] valid_node_count matcing with CP (nat lookup)  [Ok..] [0x0]
>> >> [FSCK] valid_inode_count matched with CP              [Ok..] [0x0]
>> >> [FSCK] free segment_count matched with CP             [Ok..] [0x1519]
>> >> [FSCK] next block offset is free                      [Ok..]
>> >> [FSCK] fixing SIT types
>> >> [FSCK] other corrupted bugs                           [Fail]
>> >> [move_curseg_info:1471] Move curseg[0] 0 -> 0 after 5000
>> >> [move_curseg_info:1471] Move curseg[1] 1 -> 1 after 5000
>> >> [move_curseg_info:1471] Move curseg[2] 2 -> 2 after 5000
>> >> [move_curseg_info:1471] Move curseg[3] 3 -> 3 after 5000
>> >> [move_curseg_info:1471] Move curseg[4] 4 -> 4 after 5000
>> >> [move_curseg_info:1471] Move curseg[5] 5 -> 5 after 5000
>> >>
>> >> Done.
>> >>
>> >>
>> >>
>> >> Trying to mount it , no success, gives
>> >>
>> >> F2FS-fs (sdc1): Failed to read root inode.
>> >>
>> >>
>> >> Any help or advice will be much appreciated.
>> >> Keep up the great work on f2fs.
>> >>
>> >> Kindest Regards
>> >>
>> >> Stephanos Mallouris
>> >>
>> >>
>> >> _______________________________________________
>> >> Linux-f2fs-devel mailing list
>> >> Linux-f2fs-devel@lists.sourceforge.net
>> >> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
>> >
>


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  reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-22  9:35 Stephanos Mallouris
2019-11-25 17:40 ` Jaegeuk Kim
2019-11-26  7:52   ` Stephanos Mallouris
2019-11-26 18:34     ` Jaegeuk Kim
2019-11-27  8:22       ` Stephanos Mallouris [this message]
2019-11-27 18:26         ` Jaegeuk Kim
     [not found]           ` <CAPfgDnA28pAE=1y=6XtzmrhZ1WE8y-dScZv0dB6ymbkGbfzK=Q@mail.gmail.com>
2019-12-03 17:43             ` Jaegeuk Kim
2019-12-04  1:27               ` Chao Yu
2019-12-17 10:11                 ` Stephanos Mallouris
2019-12-18 21:54                   ` Jaegeuk Kim
2019-12-31 10:14                   ` Chao Yu
     [not found]                     ` <CAPfgDnCZdOw5QzvORMjQzz4aU24GXrJQZQRougwjtBvym-wDkA@mail.gmail.com>
2020-01-08  8:36                       ` Chao Yu
2020-01-13 13:49                         ` Stephanos Mallouris
2020-01-15 11:04                           ` Chao Yu

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