Re: Made a RAID1, now Fail to recover the chunk tree.

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On Thu, Jun 19, 2014 at 06:47:27AM -0400, Zack Coffey wrote:
> I tried to create a simple RAID1 for metadata and somehow lost access
> to everything on the drive. The RAID1 for just metadata created just
> fine, everything was fine for a day, so I turned off the drive that
> was just holding the RAID1 of the metadata, it's an external USB hard
> drive. Everything seemed to be moving along fine, the data was still
> accessible and RAID1 worked. I then swapped the USB hard drive for a
> different drive and btrfs had a fit.
> 
> Right now it is not mounted, I can't get it to mount. Everything I do
> ends with an error. I can't understand what went wrong and why it
> won't mount.

   Try mount -o degraded -- you have a missing device, so the FS needs
to be told explicitly to mount in degraded mode. Then you can add a
new device and balance (probably just the metadata -- use the -m
option to balance) to recreate the duplicate metadata.

   Hugo.

> So dmesg shows me it had trouble reading chunk root. Running a
> chunk-recover shows some problems but errors out and fixes nothing.
> btrfsck --repair --init-extent-tree gives similar errors that it
> cannot read chunk root. From what I've found online, I'm stuck in a
> loop, I can't fix the first error until I fix the second. But I can't
> fix the second till the first is fixed.
> 
> 
> uname -a
> Linux mach 3.13.0-29-generic #53-Ubuntu SMP Wed Jun 4 21:00:20 UTC
> 2014 x86_64 x86_64 x86_64 GNU/Linux
> 
> sudo btrfs version
> Btrfs v3.12
> 
> sudo btrfs fi show
> Label: none  uuid: 184fecb1-3016-4fe4-b41b-f3b1b6654e84
>         Total devices 1 FS bytes used 112.00KiB
>         devid    1 size 465.76GiB used 2.04GiB path /dev/sdh1
> 
> Label: none  uuid: bd78815a-802b-43e2-8387-fc6ab4237d67
>         Total devices 2 FS bytes used 299.73GiB
>         devid    1 size 573.47GiB used 302.00GiB path /dev/sdc1
>         *** Some devices missing
> 
> Btrfs v3.12
> 
> sudo mount /dev/sdc1 /media/Data/
> mount: wrong fs type, bad option, bad superblock on /dev/sdc1,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
> Note: Adding -o degraded or -o recovery still fails.
> 
> dmesg | tail
> [43757.059275] btrfs: device fsid 184fecb1-3016-4fe4-b41b-
> f3b1b6654e84 devid 1 transid 6 /dev/sdh1
> [43808.758821] btrfs: device fsid bd78815a-802b-43e2-8387-fc6ab4237d67
> devid 1 transid 60944 /dev/sdc1
> [43808.759837] btrfs: disk space caching is enabled
> [43808.761932] btrfs: failed to read chunk root on sdc1
> [43808.780698] btrfs: open_ctree failed
> [43911.602169] btrfs: device fsid bd78815a-802b-43e2-8387-fc6ab4237d67
> devid 1 transid 60944 /dev/sdc1
> [43911.611280] btrfs: device fsid 3a1173cd-77a9-4076-8a1e-5cc782bd18a5
> devid 1 transid 4 /dev/sdh
> [43911.612189] btrfs: device fsid 184fecb1-3016-4fe4-b41b-f3b1b6654e84
> devid 1 transid 6 /dev/sdh1
> [43911.633946] btrfs: device fsid bd78815a-802b-43e2-8387-fc6ab4237d67
> devid 1 transid 60944 /dev/sdc1
> [43911.645625] btrfs: device fsid bd78815a-802b-43e2-8387-fc6ab4237d67
> devid 1 transid 60944 /dev/sdc1
> 
> 
> 
> Chunk: start = 655016067072, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 272763977728
>       Block Group: start = 655016067072, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 272763977728, len =
> 1073741824, chunk offset = 655016067072
>   Chunk: start = 656089808896, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 271690235904
>       Block Group: start = 656089808896, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 271690235904, len =
> 1073741824, chunk offset = 656089808896
>   Chunk: start = 657163550720, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 275985203200
>       Block Group: start = 657163550720, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 275985203200, len =
> 1073741824, chunk offset = 657163550720
>   Chunk: start = 658237292544, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 277058945024
>       Block Group: start = 658237292544, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 277058945024, len =
> 1073741824, chunk offset = 658237292544
>   Chunk: start = 659311034368, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 278132686848
>       Block Group: start = 659311034368, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 278132686848, len =
> 1073741824, chunk offset = 659311034368
>   Chunk: start = 660384776192, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 279206428672
>       Block Group: start = 660384776192, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 279206428672, len =
> 1073741824, chunk offset = 660384776192
>   Chunk: start = 661458518016, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 265247784960
>       Block Group: start = 661458518016, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 265247784960, len =
> 1073741824, chunk offset = 661458518016
>   Chunk: start = 662532259840, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 264174043136
>       Block Group: start = 662532259840, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 264174043136, len =
> 1073741824, chunk offset = 662532259840
>   Chunk: start = 663606001664, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 266321526784
>       Block Group: start = 663606001664, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 266321526784, len =
> 1073741824, chunk offset = 663606001664
>   Chunk: start = 664679743488, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 267395268608
>       Block Group: start = 664679743488, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 267395268608, len =
> 1073741824, chunk offset = 664679743488
>   Chunk: start = 665753485312, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 268469010432
>       Block Group: start = 665753485312, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 268469010432, len =
> 1073741824, chunk offset = 665753485312
>   Chunk: start = 666827227136, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 269542752256
>       Block Group: start = 666827227136, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 269542752256, len =
> 1073741824, chunk offset = 666827227136
>   Chunk: start = 667900968960, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 255584108544
>       Block Group: start = 667900968960, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 255584108544, len =
> 1073741824, chunk offset = 667900968960
>   Chunk: start = 668974710784, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 256657850368
>       Block Group: start = 668974710784, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 256657850368, len =
> 1073741824, chunk offset = 668974710784
>   Chunk: start = 670048452608, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 257731592192
>       Block Group: start = 670048452608, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 257731592192, len =
> 1073741824, chunk offset = 670048452608
>   Chunk: start = 671122194432, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 258805334016
>       Block Group: start = 671122194432, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 258805334016, len =
> 1073741824, chunk offset = 671122194432
>   Chunk: start = 672195936256, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 259879075840
>       Block Group: start = 672195936256, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 259879075840, len =
> 1073741824, chunk offset = 672195936256
>   Chunk: start = 673269678080, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 248067915776
>       Block Group: start = 673269678080, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 248067915776, len =
> 1073741824, chunk offset = 673269678080
>   Chunk: start = 674343419904, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 249141657600
>       Block Group: start = 674343419904, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 249141657600, len =
> 1073741824, chunk offset = 674343419904
>   Chunk: start = 675417161728, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 250215399424
>       Block Group: start = 675417161728, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 250215399424, len =
> 1073741824, chunk offset = 675417161728
>   Chunk: start = 676490903552, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 251289141248
>       Block Group: start = 676490903552, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 251289141248, len =
> 1073741824, chunk offset = 676490903552
>   Chunk: start = 677564645376, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 252362883072
>       Block Group: start = 677564645376, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 252362883072, len =
> 1073741824, chunk offset = 677564645376
>   Chunk: start = 678638387200, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 239477981184
>       Block Group: start = 678638387200, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 239477981184, len =
> 1073741824, chunk offset = 678638387200
>   Chunk: start = 679712129024, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 240551723008
>       Block Group: start = 679712129024, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 240551723008, len =
> 1073741824, chunk offset = 679712129024
>   Chunk: start = 680785870848, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 241625464832
>       Block Group: start = 680785870848, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 241625464832, len =
> 1073741824, chunk offset = 680785870848
>   Chunk: start = 681859612672, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 242699206656
>       Block Group: start = 681859612672, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 242699206656, len =
> 1073741824, chunk offset = 681859612672
>   Chunk: start = 682933354496, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 243772948480
>       Block Group: start = 682933354496, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 243772948480, len =
> 1073741824, chunk offset = 682933354496
>   Chunk: start = 684007096320, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 234109272064
>       Block Group: start = 684007096320, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 234109272064, len =
> 1073741824, chunk offset = 684007096320
>   Chunk: start = 685080838144, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 233035530240
>       Block Group: start = 685080838144, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 233035530240, len =
> 1073741824, chunk offset = 685080838144
>   Chunk: start = 686154579968, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 231961788416
>       Block Group: start = 686154579968, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 231961788416, len =
> 1073741824, chunk offset = 686154579968
>   Chunk: start = 687228321792, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 235183013888
>       Block Group: start = 687228321792, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 235183013888, len =
> 1073741824, chunk offset = 687228321792
>   Chunk: start = 688302063616, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 236256755712
>       Block Group: start = 688302063616, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 236256755712, len =
> 1073741824, chunk offset = 688302063616
>   Chunk: start = 689375805440, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 237330497536
>       Block Group: start = 689375805440, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 237330497536, len =
> 1073741824, chunk offset = 689375805440
>   Chunk: start = 690449547264, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 238404239360
>       Block Group: start = 690449547264, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 238404239360, len =
> 1073741824, chunk offset = 690449547264
>   Chunk: start = 691523289088, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 223371853824
>       Block Group: start = 691523289088, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 223371853824, len =
> 1073741824, chunk offset = 691523289088
>   Chunk: start = 692597030912, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 224445595648
>       Block Group: start = 692597030912, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 224445595648, len =
> 1073741824, chunk offset = 692597030912
>   Chunk: start = 693670772736, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 225519337472
>       Block Group: start = 693670772736, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 225519337472, len =
> 1073741824, chunk offset = 693670772736
>   Chunk: start = 694744514560, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 226593079296
>       Block Group: start = 694744514560, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 226593079296, len =
> 1073741824, chunk offset = 694744514560
>   Chunk: start = 695818256384, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 227666821120
>       Block Group: start = 695818256384, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 227666821120, len =
> 1073741824, chunk offset = 695818256384
>   Chunk: start = 696891998208, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 216929402880
>       Block Group: start = 696891998208, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 216929402880, len =
> 1073741824, chunk offset = 696891998208
>   Chunk: start = 697965740032, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 215855661056
>       Block Group: start = 697965740032, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 215855661056, len =
> 1073741824, chunk offset = 697965740032
>   Chunk: start = 699039481856, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 218003144704
>       Block Group: start = 699039481856, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 218003144704, len =
> 1073741824, chunk offset = 699039481856
>   Chunk: start = 700113223680, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 219076886528
>       Block Group: start = 700113223680, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 219076886528, len =
> 1073741824, chunk offset = 700113223680
>   Chunk: start = 701186965504, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 220150628352
>       Block Group: start = 701186965504, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 220150628352, len =
> 1073741824, chunk offset = 701186965504
>   Chunk: start = 702260707328, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 221224370176
>       Block Group: start = 702260707328, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 221224370176, len =
> 1073741824, chunk offset = 702260707328
>   Chunk: start = 703334449152, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 207265726464
>       Block Group: start = 703334449152, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 207265726464, len =
> 1073741824, chunk offset = 703334449152
>   Chunk: start = 704408190976, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 208339468288
>       Block Group: start = 704408190976, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 208339468288, len =
> 1073741824, chunk offset = 704408190976
>   Chunk: start = 705481932800, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 209413210112
>       Block Group: start = 705481932800, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 209413210112, len =
> 1073741824, chunk offset = 705481932800
>   Chunk: start = 706555674624, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 210486951936
>       Block Group: start = 706555674624, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 210486951936, len =
> 1073741824, chunk offset = 706555674624
>   Chunk: start = 707629416448, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 211560693760
>       Block Group: start = 707629416448, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 211560693760, len =
> 1073741824, chunk offset = 707629416448
>   Chunk: start = 708703158272, len = 1073741824, type = 1, num_stripes = 1
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>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 33554432
>       Block Group: start = 867616948224, len = 1073741824, flag = 4
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 33554432, len =
> 1073741824, chunk offset = 867616948224
>   Chunk: start = 868690690048, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 1107296256
>       Block Group: start = 868690690048, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 1107296256, len =
> 1073741824, chunk offset = 868690690048
>   Chunk: start = 869764431872, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 2181038080
>       Block Group: start = 869764431872, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 2181038080, len =
> 1073741824, chunk offset = 869764431872
>   Chunk: start = 870838173696, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 3254779904
>       Block Group: start = 870838173696, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 3254779904, len =
> 1073741824, chunk offset = 870838173696
>   Chunk: start = 871911915520, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 4328521728
>       Block Group: start = 871911915520, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 4328521728, len =
> 1073741824, chunk offset = 871911915520
>   Chunk: start = 874059399168, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 6476005376
>       Block Group: start = 874059399168, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 6476005376, len =
> 1073741824, chunk offset = 874059399168
>   Chunk: start = 875133140992, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 16139681792
>       Block Group: start = 875133140992, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 16139681792, len =
> 1073741824, chunk offset = 875133140992
>   Chunk: start = 876206882816, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 19360907264
>       Block Group: start = 876206882816, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 19360907264, len =
> 1073741824, chunk offset = 876206882816
>   Chunk: start = 877280624640, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 7549747200
>       Block Group: start = 877280624640, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 7549747200, len =
> 1073741824, chunk offset = 877280624640
>   Chunk: start = 878354366464, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 8623489024
>       Block Group: start = 878354366464, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 8623489024, len =
> 1073741824, chunk offset = 878354366464
>   Chunk: start = 879428108288, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 9697230848
>       Block Group: start = 879428108288, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 9697230848, len =
> 1073741824, chunk offset = 879428108288
>   Chunk: start = 880501850112, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 10770972672
>       Block Group: start = 880501850112, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 10770972672, len =
> 1073741824, chunk offset = 880501850112
>   Chunk: start = 881575591936, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 11844714496
>       Block Group: start = 881575591936, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 11844714496, len =
> 1073741824, chunk offset = 881575591936
>   Chunk: start = 882649333760, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 12918456320
>       Block Group: start = 882649333760, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 12918456320, len =
> 1073741824, chunk offset = 882649333760
>   Chunk: start = 883723075584, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 17213423616
>       Block Group: start = 883723075584, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 17213423616, len =
> 1073741824, chunk offset = 883723075584
>   Chunk: start = 884796817408, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 13992198144
>       Block Group: start = 884796817408, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 13992198144, len =
> 1073741824, chunk offset = 884796817408
>   Chunk: start = 885870559232, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 20434649088
>       Block Group: start = 885870559232, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 20434649088, len =
> 1073741824, chunk offset = 885870559232
>   Chunk: start = 886944301056, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 21508390912
>       Block Group: start = 886944301056, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 21508390912, len =
> 1073741824, chunk offset = 886944301056
>   Chunk: start = 888018042880, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 24729616384
>       Block Group: start = 888018042880, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 24729616384, len =
> 1073741824, chunk offset = 888018042880
>   Chunk: start = 889091784704, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 26877100032
>       Block Group: start = 889091784704, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 26877100032, len =
> 1073741824, chunk offset = 889091784704
>   Chunk: start = 890165526528, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 27950841856
>       Block Group: start = 890165526528, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 27950841856, len =
> 1073741824, chunk offset = 890165526528
>   Chunk: start = 891239268352, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 29024583680
>       Block Group: start = 891239268352, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 29024583680, len =
> 1073741824, chunk offset = 891239268352
>   Chunk: start = 892313010176, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 30098325504
>       Block Group: start = 892313010176, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 30098325504, len =
> 1073741824, chunk offset = 892313010176
>   Chunk: start = 893386752000, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 34393292800
>       Block Group: start = 893386752000, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 34393292800, len =
> 1073741824, chunk offset = 893386752000
>   Chunk: start = 894460493824, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 35467034624
>       Block Group: start = 894460493824, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 35467034624, len =
> 1073741824, chunk offset = 894460493824
>   Chunk: start = 895534235648, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 36540776448
>       Block Group: start = 895534235648, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 36540776448, len =
> 1073741824, chunk offset = 895534235648
>   Chunk: start = 896607977472, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 37614518272
>       Block Group: start = 896607977472, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 37614518272, len =
> 1073741824, chunk offset = 896607977472
>   Chunk: start = 897681719296, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 38688260096
>       Block Group: start = 897681719296, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 38688260096, len =
> 1073741824, chunk offset = 897681719296
>   Chunk: start = 898755461120, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 39762001920
>       Block Group: start = 898755461120, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 39762001920, len =
> 1073741824, chunk offset = 898755461120
>   Chunk: start = 899829202944, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 40835743744
>       Block Group: start = 899829202944, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 40835743744, len =
> 1073741824, chunk offset = 899829202944
>   Chunk: start = 900902944768, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 41909485568
>       Block Group: start = 900902944768, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 41909485568, len =
> 1073741824, chunk offset = 900902944768
>   Chunk: start = 901976686592, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 45130711040
>       Block Group: start = 901976686592, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 45130711040, len =
> 1073741824, chunk offset = 901976686592
>   Chunk: start = 903050428416, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 46204452864
>       Block Group: start = 903050428416, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 46204452864, len =
> 1073741824, chunk offset = 903050428416
>   Chunk: start = 904124170240, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 56941871104
>       Block Group: start = 904124170240, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 56941871104, len =
> 1073741824, chunk offset = 904124170240
>   Chunk: start = 905197912064, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 64458063872
>       Block Group: start = 905197912064, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 64458063872, len =
> 1073741824, chunk offset = 905197912064
>   Chunk: start = 906271653888, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 47278194688
>       Block Group: start = 906271653888, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 47278194688, len =
> 1073741824, chunk offset = 906271653888
>   Chunk: start = 907345395712, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 48351936512
>       Block Group: start = 907345395712, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 48351936512, len =
> 1073741824, chunk offset = 907345395712
>   Chunk: start = 908419137536, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 49425678336
>       Block Group: start = 908419137536, len = 1073741824, flag = 1
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 49425678336, len =
> 1073741824, chunk offset = 908419137536
>   Chunk: start = 909492879360, len = 1073741824, type = 14, num_stripes = 2
>       Stripes list:
>       [ 0] Stripe: devid = 2, offset = 1048576
>       [ 1] Stripe: devid = 1, offset = 50499420160
>       Block Group: start = 909492879360, len = 1073741824, flag = 14
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 50499420160, len =
> 1073741824, chunk offset = 909492879360
>           [ 1]Device extent: devid = 2, start = 1048576, len =
> 1073741824, chunk offset = 909492879360
>   Chunk: start = 910566621184, len = 1073741824, type = 14, num_stripes = 2
>       Stripes list:
>       [ 0] Stripe: devid = 2, offset = 1074790400
>       [ 1] Stripe: devid = 1, offset = 51573161984
>       Block Group: start = 910566621184, len = 1073741824, flag = 14
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 51573161984, len =
> 1073741824, chunk offset = 910566621184
>           [ 1]Device extent: devid = 2, start = 1074790400, len =
> 1073741824, chunk offset = 910566621184
>   Chunk: start = 911640363008, len = 33554432, type = 12, num_stripes = 2
>       Stripes list:
>       [ 0] Stripe: devid = 2, offset = 2148532224
>       [ 1] Stripe: devid = 1, offset = 5402263552
>       Block Group: start = 911640363008, len = 33554432, flag = 12
>       Device extent list:
>           [ 0]Device extent: devid = 1, start = 5402263552, len =
> 33554432, chunk offset = 911640363008
>           [ 1]Device extent: devid = 2, start = 2148532224, len =
> 33554432, chunk offset = 911640363008
> Bad Chunks:
>   Chunk: start = 743062896640, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 166463537152
>       No block group.
>       No device extent.
>   Chunk: start = 744136638464, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 153578635264
>       No block group.
>       No device extent.
>   Chunk: start = 745210380288, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 152504893440
>       No block group.
>       No device extent.
>   Chunk: start = 746284122112, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 151431151616
>       No block group.
>       No device extent.
>   Chunk: start = 747357863936, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 154652377088
>       No block group.
>       No device extent.
>   Chunk: start = 748431605760, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 155726118912
>       No block group.
>       No device extent.
>   Chunk: start = 775275151360, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 121366380544
>       No block group.
>       No device extent.
>   Chunk: start = 776348893184, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 120292638720
>       No block group.
>       No device extent.
>   Chunk: start = 777422635008, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 119218896896
>       No block group.
>       No device extent.
>   Chunk: start = 778496376832, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 122440122368
>       No block group.
>       No device extent.
>   Chunk: start = 779570118656, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 123513864192
>       No block group.
>       No device extent.
>   Chunk: start = 780643860480, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 124587606016
>       No block group.
>       No device extent.
>   Chunk: start = 836478435328, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 60163096576
>       No block group.
>       No device extent.
>   Chunk: start = 837552177152, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 46204452864
>       No block group.
>       No device extent.
>   Chunk: start = 838625918976, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 47278194688
>       No block group.
>       No device extent.
>   Chunk: start = 839699660800, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 48351936512
>       No block group.
>       No device extent.
>   Chunk: start = 840773402624, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 49425678336
>       No block group.
>       No device extent.
>   Chunk: start = 841847144448, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 50499420160
>       No block group.
>       No device extent.
>   Chunk: start = 842920886272, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 40835743744
>       No block group.
>       No device extent.
>   Chunk: start = 843994628096, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 39762001920
>       No block group.
>       No device extent.
>   Chunk: start = 845068369920, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 38688260096
>       No block group.
>       No device extent.
>   Chunk: start = 846142111744, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 41909485568
>       No block group.
>       No device extent.
>   Chunk: start = 849363337216, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 45130711040
>       No block group.
>       No device extent.
>   Chunk: start = 850437079040, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 30098325504
>       No block group.
>       No device extent.
>   Chunk: start = 854732046336, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 34393292800
>       No block group.
>       No device extent.
>   Chunk: start = 855805788160, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 24729616384
>       No block group.
>       No device extent.
>   Chunk: start = 860100755456, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 26877100032
>       No block group.
>       No device extent.
>   Chunk: start = 861174497280, len = 1073741824, type = 1, num_stripes = 1
>       Stripes list:
>       [ 0] Stripe: devid = 1, offset = 27950841856
>       No block group.
>       No device extent.
> 
> Total Chunks:   333
>   Heathy:       305
>   Bad:  28
> 
> Orphan Block Groups:
>   Block Group: start = 872985657344, len = 1073741824, flag = 4
>   Block Group: start = 911673917440, len = 33554432, flag = 2
>   Block Group: start = 911707471872, len = 1073741824, flag = 4
> 
> Orphan Device Extents:
>   Device extent: devid = 2, start = 2182086656, len = 33554432, chunk
> offset = 911673917440
>   Device extent: devid = 2, start = 2215641088, len = 1073741824,
> chunk offset = 911707471872
> open with broken chunk error
> Fail to recover the chunk tree.
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-- 
=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
  PGP key: 65E74AC0 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk
   --- One of these days, I'll catch that man without a quotation, ---   
                        and he'll look undressed.                        

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