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[Qemu-devel] [Bug 1639225] [NEW] qcow2 - filesize 8.1Petabyte

From: minecraft7net
Subject: [Qemu-devel] [Bug 1639225] [NEW] qcow2 - filesize 8.1Petabyte
Date: Fri, 04 Nov 2016 12:49:22 -0000 
Public bug reported:


problem :

Filesystem                                     Size  Used Avail Use%
Mounted on

/dev/sdd1                                      120G   63G   57G  53%
/storage/kvmstorage4ssd

# pwd
/storage/kvmstorage4ssd/images

# qemu-img info vsys19_ssd1.qcow2 
image: vsys19_ssd1.qcow2
file format: qcow2
virtual size: 20G (21474836480 bytes)
disk size: 11G
cluster_size: 65536
Format specific information:
    compat: 1.1
    lazy refcounts: true
    refcount bits: 16
    corrupt: true
# ls -lah vsys19_*
-rw------- 1 root root 8.1P Nov  4 13:16 vsys19_ssd1.qcow2

# ls -la vsys19_*
-rw------- 1 root root 9007203702079488 Nov  4 13:16 vsys19_ssd1.qcow2

# qemu-img check vsys19_ssd1.qcow2 
qemu-img: Check failed: File too large

# xfs_repair /dev/sdd1
Phase 1 - find and verify superblock...
Phase 2 - using internal log
        - zero log...
        - scan filesystem freespace and inode maps...
        - found root inode chunk
Phase 3 - for each AG...
        - scan and clear agi unlinked lists...
        - process known inodes and perform inode discovery...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
        - process newly discovered inodes...
Phase 4 - check for duplicate blocks...
        - setting up duplicate extent list...
        - check for inodes claiming duplicate blocks...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
Phase 5 - rebuild AG headers and trees...
        - reset superblock...
Phase 6 - check inode connectivity...
        - resetting contents of realtime bitmap and summary inodes
        - traversing filesystem ...
        - traversal finished ...
        - moving disconnected inodes to lost+found ...
Phase 7 - verify and correct link counts...
done


# pwd
/storage/kvmstorage4ssd/images

    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2'/>
      <source file='/storage/kvmstorage4ssd/images/vsys19_ssd1.qcow2'/>
      <target dev='vdn' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x0f' 
function='0x0'/>
    </disk>


guest OS:


# uname -a
Linux vsys19 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1 (2015-05-24) x86_64 
GNU/Linux
cat /etc/debian_version 
stretch/sid

Nov  4 01:23:26 vsys19 kernel: [7654313.024844] end_request: I/O error, dev 
vdk, sector 8691272
Nov  4 01:23:26 vsys19 kernel: [7654313.025328] EXT4-fs warning (device dm-1): 
ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 4202496 s
tarting block 1085897)
Nov  4 01:23:26 vsys19 kernel: [7654313.025334] Buffer I/O error on device 
dm-1, logical block 1085897
Nov  4 01:23:26 vsys19 kernel: [7654313.025488] Buffer I/O error on device 
dm-1, logical block 1085898
Nov  4 01:23:26 vsys19 kernel: [7654313.025632] Buffer I/O error on device 
dm-1, logical block 1085899
Nov  4 01:23:26 vsys19 kernel: [7654313.025776] Buffer I/O error on device 
dm-1, logical block 1085900
Nov  4 01:23:26 vsys19 kernel: [7654313.025920] Buffer I/O error on device 
dm-1, logical block 1085901
Nov  4 01:23:26 vsys19 kernel: [7654313.026064] Buffer I/O error on device 
dm-1, logical block 1085902
Nov  4 01:23:26 vsys19 kernel: [7654313.026207] Buffer I/O error on device 
dm-1, logical block 1085903
Nov  4 01:23:26 vsys19 kernel: [7654313.026350] Buffer I/O error on device 
dm-1, logical block 1085904
Nov  4 01:23:26 vsys19 kernel: [7654313.026500] Buffer I/O error on device 
dm-1, logical block 1085905
Nov  4 01:23:26 vsys19 kernel: [7654313.028837] Buffer I/O error on device 
dm-1, logical block 1085906
Nov  4 01:23:26 vsys19 kernel: [7654313.031122] end_request: I/O error, dev 
vdk, sector 8692280
Nov  4 01:23:26 vsys19 kernel: [7654313.031325] EXT4-fs warning (device dm-1): 
ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 4202496 
starting block 1086023)
Nov  4 01:23:26 vsys19 kernel: [7654313.031388] end_request: I/O error, dev 
vdk, sector 8693288
Nov  4 01:23:26 vsys19 kernel: [7654313.031527] EXT4-fs warning (device dm-1): 
ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 4202496 
starting block 1086149)
Nov  4 01:23:26 vsys19 kernel: [7654313.031598] end_request: I/O error, dev 
vdk, sector 8694296
Nov  4 01:23:26 vsys19 kernel: [7654313.031736] EXT4-fs warning (device dm-1): 
ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 4202496 
starting block 1086275)
Nov  4 01:23:26 vsys19 kernel: [7654313.031798] end_request: I/O error, dev 
vdk, sector 8695304
Nov  4 01:23:26 vsys19 kernel: [7654313.031933] EXT4-fs warning (device dm-1): 
ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 4202496 
starting block 1086401)

KVM host :
# cat /etc/debian_version 
stretch/sid

Debian


# uname -a
Linux asus1 4.5.5-custom #1 SMP Sun May 22 21:14:57 CEST 2016 x86_64 GNU/Linux

# dpkg -l | grep -i qemu
ii  ipxe-qemu                             1.0.0+git-20150424.a25a16d-1    all   
       PXE boot firmware - ROM images for qemu
ii  qemu                                  1:2.5+dfsg-5+b1                 amd64 
       fast processor emulator
ii  qemu-kvm                              1:2.5+dfsg-5+b1                 amd64 
       QEMU Full virtualization on x86 hardware
ii  qemu-slof                             20151103+dfsg-2                 all   
       Slimline Open Firmware -- QEMU PowerPC version
ii  qemu-system                           1:2.5+dfsg-5+b1                 amd64 
       QEMU full system emulation binaries
ii  qemu-system-arm                       1:2.5+dfsg-5+b1                 amd64 
       QEMU full system emulation binaries (arm)
ii  qemu-system-common                    1:2.5+dfsg-5+b1                 amd64 
       QEMU full system emulation binaries (common files)
ii  qemu-system-mips                      1:2.5+dfsg-5+b1                 amd64 
       QEMU full system emulation binaries (mips)
ii  qemu-system-misc                      1:2.5+dfsg-5+b1                 amd64 
       QEMU full system emulation binaries (miscelaneous)
ii  qemu-system-ppc                       1:2.5+dfsg-5+b1                 amd64 
       QEMU full system emulation binaries (ppc)
ii  qemu-system-sparc                     1:2.5+dfsg-5+b1                 amd64 
       QEMU full system emulation binaries (sparc)
ii  qemu-system-x86                       1:2.5+dfsg-5+b1                 amd64 
       QEMU full system emulation binaries (x86)
ii  qemu-user                             1:2.5+dfsg-5+b1                 amd64 
       QEMU user mode emulation binaries
ii  qemu-user-binfmt                      1:2.5+dfsg-5+b1                 amd64 
       QEMU user mode binfmt registration for qemu-user
ii  qemu-utils                            1:2.5+dfsg-5+b1                 amd64 
       QEMU utilities
ii  qemubuilder                           0.80                            amd64 
       pbuilder using QEMU as backend

** Affects: qemu
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1639225

Title:
  qcow2 - filesize 8.1Petabyte

Status in QEMU:
  New

Bug description:
  
  problem :

  Filesystem                                     Size  Used Avail Use%
  Mounted on

  /dev/sdd1                                      120G   63G   57G  53%
  /storage/kvmstorage4ssd

  # pwd
  /storage/kvmstorage4ssd/images

  # qemu-img info vsys19_ssd1.qcow2 
  image: vsys19_ssd1.qcow2
  file format: qcow2
  virtual size: 20G (21474836480 bytes)
  disk size: 11G
  cluster_size: 65536
  Format specific information:
      compat: 1.1
      lazy refcounts: true
      refcount bits: 16
      corrupt: true
  # ls -lah vsys19_*
  -rw------- 1 root root 8.1P Nov  4 13:16 vsys19_ssd1.qcow2

  # ls -la vsys19_*
  -rw------- 1 root root 9007203702079488 Nov  4 13:16 vsys19_ssd1.qcow2

  # qemu-img check vsys19_ssd1.qcow2 
  qemu-img: Check failed: File too large

  # xfs_repair /dev/sdd1
  Phase 1 - find and verify superblock...
  Phase 2 - using internal log
          - zero log...
          - scan filesystem freespace and inode maps...
          - found root inode chunk
  Phase 3 - for each AG...
          - scan and clear agi unlinked lists...
          - process known inodes and perform inode discovery...
          - agno = 0
          - agno = 1
          - agno = 2
          - agno = 3
          - process newly discovered inodes...
  Phase 4 - check for duplicate blocks...
          - setting up duplicate extent list...
          - check for inodes claiming duplicate blocks...
          - agno = 0
          - agno = 1
          - agno = 2
          - agno = 3
  Phase 5 - rebuild AG headers and trees...
          - reset superblock...
  Phase 6 - check inode connectivity...
          - resetting contents of realtime bitmap and summary inodes
          - traversing filesystem ...
          - traversal finished ...
          - moving disconnected inodes to lost+found ...
  Phase 7 - verify and correct link counts...
  done

  
  # pwd
  /storage/kvmstorage4ssd/images

      <disk type='file' device='disk'>
        <driver name='qemu' type='qcow2'/>
        <source file='/storage/kvmstorage4ssd/images/vsys19_ssd1.qcow2'/>
        <target dev='vdn' bus='virtio'/>
        <address type='pci' domain='0x0000' bus='0x00' slot='0x0f' 
function='0x0'/>
      </disk>

  
  guest OS:

  
  # uname -a
  Linux vsys19 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1 (2015-05-24) x86_64 
GNU/Linux
  cat /etc/debian_version 
  stretch/sid

  Nov  4 01:23:26 vsys19 kernel: [7654313.024844] end_request: I/O error, dev 
vdk, sector 8691272
  Nov  4 01:23:26 vsys19 kernel: [7654313.025328] EXT4-fs warning (device 
dm-1): ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 
4202496 s
  tarting block 1085897)
  Nov  4 01:23:26 vsys19 kernel: [7654313.025334] Buffer I/O error on device 
dm-1, logical block 1085897
  Nov  4 01:23:26 vsys19 kernel: [7654313.025488] Buffer I/O error on device 
dm-1, logical block 1085898
  Nov  4 01:23:26 vsys19 kernel: [7654313.025632] Buffer I/O error on device 
dm-1, logical block 1085899
  Nov  4 01:23:26 vsys19 kernel: [7654313.025776] Buffer I/O error on device 
dm-1, logical block 1085900
  Nov  4 01:23:26 vsys19 kernel: [7654313.025920] Buffer I/O error on device 
dm-1, logical block 1085901
  Nov  4 01:23:26 vsys19 kernel: [7654313.026064] Buffer I/O error on device 
dm-1, logical block 1085902
  Nov  4 01:23:26 vsys19 kernel: [7654313.026207] Buffer I/O error on device 
dm-1, logical block 1085903
  Nov  4 01:23:26 vsys19 kernel: [7654313.026350] Buffer I/O error on device 
dm-1, logical block 1085904
  Nov  4 01:23:26 vsys19 kernel: [7654313.026500] Buffer I/O error on device 
dm-1, logical block 1085905
  Nov  4 01:23:26 vsys19 kernel: [7654313.028837] Buffer I/O error on device 
dm-1, logical block 1085906
  Nov  4 01:23:26 vsys19 kernel: [7654313.031122] end_request: I/O error, dev 
vdk, sector 8692280
  Nov  4 01:23:26 vsys19 kernel: [7654313.031325] EXT4-fs warning (device 
dm-1): ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 
4202496 starting block 1086023)
  Nov  4 01:23:26 vsys19 kernel: [7654313.031388] end_request: I/O error, dev 
vdk, sector 8693288
  Nov  4 01:23:26 vsys19 kernel: [7654313.031527] EXT4-fs warning (device 
dm-1): ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 
4202496 starting block 1086149)
  Nov  4 01:23:26 vsys19 kernel: [7654313.031598] end_request: I/O error, dev 
vdk, sector 8694296
  Nov  4 01:23:26 vsys19 kernel: [7654313.031736] EXT4-fs warning (device 
dm-1): ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 
4202496 starting block 1086275)
  Nov  4 01:23:26 vsys19 kernel: [7654313.031798] end_request: I/O error, dev 
vdk, sector 8695304
  Nov  4 01:23:26 vsys19 kernel: [7654313.031933] EXT4-fs warning (device 
dm-1): ext4_end_bio:317: I/O error -5 writing to inode 262305 (offset 0 size 
4202496 starting block 1086401)

  KVM host :
  # cat /etc/debian_version 
  stretch/sid

  Debian

  
  # uname -a
  Linux asus1 4.5.5-custom #1 SMP Sun May 22 21:14:57 CEST 2016 x86_64 GNU/Linux

  # dpkg -l | grep -i qemu
  ii  ipxe-qemu                             1.0.0+git-20150424.a25a16d-1    all 
         PXE boot firmware - ROM images for qemu
  ii  qemu                                  1:2.5+dfsg-5+b1                 
amd64        fast processor emulator
  ii  qemu-kvm                              1:2.5+dfsg-5+b1                 
amd64        QEMU Full virtualization on x86 hardware
  ii  qemu-slof                             20151103+dfsg-2                 all 
         Slimline Open Firmware -- QEMU PowerPC version
  ii  qemu-system                           1:2.5+dfsg-5+b1                 
amd64        QEMU full system emulation binaries
  ii  qemu-system-arm                       1:2.5+dfsg-5+b1                 
amd64        QEMU full system emulation binaries (arm)
  ii  qemu-system-common                    1:2.5+dfsg-5+b1                 
amd64        QEMU full system emulation binaries (common files)
  ii  qemu-system-mips                      1:2.5+dfsg-5+b1                 
amd64        QEMU full system emulation binaries (mips)
  ii  qemu-system-misc                      1:2.5+dfsg-5+b1                 
amd64        QEMU full system emulation binaries (miscelaneous)
  ii  qemu-system-ppc                       1:2.5+dfsg-5+b1                 
amd64        QEMU full system emulation binaries (ppc)
  ii  qemu-system-sparc                     1:2.5+dfsg-5+b1                 
amd64        QEMU full system emulation binaries (sparc)
  ii  qemu-system-x86                       1:2.5+dfsg-5+b1                 
amd64        QEMU full system emulation binaries (x86)
  ii  qemu-user                             1:2.5+dfsg-5+b1                 
amd64        QEMU user mode emulation binaries
  ii  qemu-user-binfmt                      1:2.5+dfsg-5+b1                 
amd64        QEMU user mode binfmt registration for qemu-user
  ii  qemu-utils                            1:2.5+dfsg-5+b1                 
amd64        QEMU utilities
  ii  qemubuilder                           0.80                            
amd64        pbuilder using QEMU as backend

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