Btrfs Problem

Hallo Zusammen,

ich habe das Problem, dass mein btrfs auf einem Raid1 unter Ubuntu 20.04 nicht mehr zu mounten ist. Der mount Befehl meldet in einem Live System " can't read superblock on /dev/md2"

Lasse ich den SUprtblock wiederherstellen, kommt die Meldung dass diese OK sind.
dmesg gibt mir folgendes aus:

[Mon Aug 19 09:29:48 2024] BTRFS: device fsid 85d58546-9bea-4f02-8107-ce43bb3a3e3c devid 1 transid 3489470 /dev/md2 (9:2) scanned by mount (4241)
[Mon Aug 19 09:29:48 2024] BTRFS info (device md2): first mount of filesystem 85d58546-9bea-4f02-8107-ce43bb3a3e3c
[Mon Aug 19 09:29:48 2024] BTRFS info (device md2): using crc32c (crc32c-intel) checksum algorithm
[Mon Aug 19 09:29:48 2024] BTRFS info (device md2): disk space caching is enabled
[Mon Aug 19 09:29:49 2024] page: refcount:4 mapcount:0 mapping:0000000056f2f814 index:0x22400 pfn:0x1170fd
[Mon Aug 19 09:29:49 2024] memcg:ffff888108535000
[Mon Aug 19 09:29:49 2024] aops:btrfs_cleanup_fs_uuids [btrfs] ino:1
[Mon Aug 19 09:29:49 2024] flags: 0x2ffff8000008000(private|node=0|zone=2|lastcpupid=0x1ffff)
[Mon Aug 19 09:29:49 2024] page_type: 0xffffffff()
[Mon Aug 19 09:29:49 2024] raw: 02ffff8000008000 0000000000000000 dead000000000122 ffff8881041b0760
[Mon Aug 19 09:29:49 2024] raw: 0000000000022400 ffff8881011113b0 00000004ffffffff ffff888108535000
[Mon Aug 19 09:29:49 2024] page dumped because: eb page dump
[Mon Aug 19 09:29:49 2024] BTRFS critical (device md2): corrupt leaf: root=2 block=574619648 slot=11, unexpected item end, have 8928596 expect 15700
[Mon Aug 19 09:29:49 2024] BTRFS error (device md2): read time tree block corruption detected on logical 574619648 mirror 1
[Mon Aug 19 09:29:49 2024] page: refcount:4 mapcount:0 mapping:0000000056f2f814 index:0x22400 pfn:0x1170fd
[Mon Aug 19 09:29:49 2024] memcg:ffff888108535000
[Mon Aug 19 09:29:49 2024] aops:btrfs_cleanup_fs_uuids [btrfs] ino:1
[Mon Aug 19 09:29:49 2024] flags: 0x2ffff8000008000(private|node=0|zone=2|lastcpupid=0x1ffff)
[Mon Aug 19 09:29:49 2024] page_type: 0xffffffff()
[Mon Aug 19 09:29:49 2024] raw: 02ffff8000008000 0000000000000000 dead000000000122 ffff8881041b0760
[Mon Aug 19 09:29:49 2024] raw: 0000000000022400 ffff8881011113b0 00000004ffffffff ffff888108535000
[Mon Aug 19 09:29:49 2024] page dumped because: eb page dump
[Mon Aug 19 09:29:49 2024] BTRFS critical (device md2): corrupt leaf: root=2 block=574619648 slot=11, unexpected item end, have 8928596 expect 15700
[Mon Aug 19 09:29:49 2024] BTRFS error (device md2): read time tree block corruption detected on logical 574619648 mirror 2
[Mon Aug 19 09:29:49 2024] BTRFS error (device md2): failed to read block groups: -5
[Mon Aug 19 09:29:50 2024] BTRFS error (device md2): open_ctree failed

btrfs check bricht ebenso ab. Was kann ich jetzt tun?

Danke,
Roadmax

Bitte markiere auch die Kommentare, die zur Lösung des Beitrags beigetragen haben

Content-ID: 13956706852

Url: https://administrator.de/contentid/13956706852

Ausgedruckt am: 24.11.2024 um 17:11 Uhr

5 Kommentare

Neuester Kommentar

Hallo

Festplatten sind OK? Smart Werte?

Ja die sind ok:
sda:

Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
Raw_Read_Error_Rate     0x000b   100   100   016    Pre-fail  Always       -       0
Throughput_Performance  0x0005   131   131   054    Pre-fail  Offline      -       104
Spin_Up_Time            0x0007   183   183   024    Pre-fail  Always       -       399 (Average 319)
Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       13
Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       0
Seek_Error_Rate         0x000b   100   100   067    Pre-fail  Always       -       0
Seek_Time_Performance   0x0005   128   128   020    Pre-fail  Offline      -       18
Power_On_Hours          0x0012   094   094   000    Old_age   Always       -       43203
Spin_Retry_Count        0x0013   100   100   060    Pre-fail  Always       -       0
Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       13
Helium_Level            0x0023   100   100   025    Pre-fail  Always       -       100
Power-Off_Retract_Count 0x0032   099   099   000    Old_age   Always       -       1750
Load_Cycle_Count        0x0012   099   099   000    Old_age   Always       -       1750
Temperature_Celsius     0x0002   171   171   000    Old_age   Always       -       35 (Min/Max 24/47)
Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       0
Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       0
Offline_Uncorrectable   0x0008   100   100   000    Old_age   Offline      -       0
UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       0

sdb:

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
Raw_Read_Error_Rate     0x000b   100   100   016    Pre-fail  Always       -       0
Throughput_Performance  0x0005   133   133   054    Pre-fail  Offline      -       100
Spin_Up_Time            0x0007   173   173   024    Pre-fail  Always       -       411 (Average 348)
Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       13
Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       0
Seek_Error_Rate         0x000b   100   100   067    Pre-fail  Always       -       0
Seek_Time_Performance   0x0005   128   128   020    Pre-fail  Offline      -       18
Power_On_Hours          0x0012   094   094   000    Old_age   Always       -       43203
Spin_Retry_Count        0x0013   100   100   060    Pre-fail  Always       -       0
Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       13
Helium_Level            0x0023   100   100   025    Pre-fail  Always       -       100
Power-Off_Retract_Count 0x0032   099   099   000    Old_age   Always       -       1742
Load_Cycle_Count        0x0012   099   099   000    Old_age   Always       -       1742
Temperature_Celsius     0x0002   166   166   000    Old_age   Always       -       36 (Min/Max 23/48)
Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       0
Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       0
Offline_Uncorrectable   0x0008   100   100   000    Old_age   Offline      -       0
UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       0

Hi
nun der Superblock ist ja auch nicht das Problem....

[Mon Aug 19 09:29:49 2024] BTRFS critical (device md2): corrupt leaf: root=2 block=574619648 slot=11, unexpected item end, have 8928596 expect 15700
[Mon Aug 19 09:29:49 2024] BTRFS error (device md2): read time tree block corruption detected on logical 574619648 mirror 2
[Mon Aug 19 09:29:49 2024] BTRFS error (device md2): failed to read block groups: -5
[Mon Aug 19 09:29:50 2024] BTRFS error (device md2): open_ctree failed

Da steht doch dein Problem....

Nicht Vergessen Backup vor dem Fixen für den Fall der Fälle ;)