On 07/11/2015 01:28 AM, None None wrote:
I can't apply your patch on btrfs-progs v4.1 nor v4.0
http://www.spinics.net/lists/linux-btrfs/msg43422.html
git apply --check
error: Documentation/btrfs-device.txt: No such file or directory
error: patch failed: cmds-device.c:169
error: cmds-device.c: patch does not apply

 I have rebased it on latest now. Kindly find v2.

http://www.spinics.net/lists/linux-btrfs/msg43646.html
git apply --check
does not return any errors for the kernel patch with 4.1


Are these patches included in the new 4.2-rc1 kernel?

No.

Also isn't "missing" for cases when a device is not available anymore, why 
would I want to delete a device by ID?

 Its for the similar situation where you need to replace the device
 with out reading the src-device.

Thanks, Anand




Anand Jain <anand.j...@oracle.com> írta:

  The patches sent before helps to delete device without
  reading the device to be deleted. So it should help here.
  Can you try,

    [PATCH V2 1/8] Btrfs: device delete by devid
    [PATCH 2/2] btrfs-progs: device delete to accept devid

Thanks, Anand

On 07/10/2015 12:05 PM, None None wrote:
One of my 3TB drives failed (not recognized anymore) recently so I got two new 4TB drives, I 
mounted the fs with -o degraded and used "btrfs dev add" to add the new drives then I did 
"btrfs dev del missing".
Now delete missing always returns an error
ERROR: error removing the device 'missing' - Input/output error

According to dmesg sda returns bad data but the smart values for it seem fine.
How do I get the FS working again?



Debian/SID, kernel v4.1



# btrfs fi df /srv/
Data, RAID5: total=18.96TiB, used=18.52TiB
System, RAID1: total=32.00MiB, used=2.30MiB
Metadata, RAID1: total=24.06GiB, used=22.09GiB
GlobalReserve, single: total=512.00MiB, used=0.00B



# btrfs fi sho
Label: none  uuid: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
          Total devices 11 FS bytes used 18.54TiB
          devid    1 size 2.73TiB used 2.56TiB path /dev/sdh
          devid    2 size 2.73TiB used 2.63TiB path /dev/sdg
          devid    3 size 2.73TiB used 2.64TiB path /dev/sdj
          devid    4 size 2.73TiB used 2.60TiB path /dev/sdk
          devid    5 size 2.73TiB used 2.63TiB path /dev/sdb
          devid    6 size 2.73TiB used 2.73TiB path /dev/sda
          devid    9 size 2.73TiB used 2.73TiB path /dev/sdd
          devid   10 size 2.73TiB used 2.73TiB path /dev/sdl
          devid   11 size 3.64TiB used 2.66GiB path /dev/sdc
          devid   12 size 3.64TiB used 2.66GiB path /dev/sde
          *** Some devices missing

btrfs-progs v4.0



# dmesg | tail -n 40
[ 9474.630480] BTRFS warning (device sda): csum failed ino 384 off 2927886336 
csum 1204172668 expected csum 3738892907
[ 9474.630487] BTRFS warning (device sda): csum failed ino 384 off 2927919104 
csum 729502971 expected csum 57406087
[ 9474.630493] BTRFS warning (device sda): csum failed ino 384 off 2927923200 
csum 1688454633 expected csum 4263548653
[ 9474.630495] BTRFS warning (device sda): csum failed ino 384 off 2927927296 
csum 3679588162 expected csum 4283532667
[ 9484.066796] BTRFS info (device sda): relocating block group 66338809643008 
flags 129
[ 9505.492349] __readpage_endio_check: 6 callbacks suppressed
[ 9505.492356] BTRFS warning (device sda): csum failed ino 385 off 2927886336 
csum 1204172668 expected csum 3738892907
[ 9505.492366] BTRFS warning (device sda): csum failed ino 385 off 2927890432 
csum 645393967 expected csum 1519548271
[ 9505.492372] BTRFS warning (device sda): csum failed ino 385 off 2927894528 
csum 3254966910 expected csum 2168664573
[ 9505.492377] BTRFS warning (device sda): csum failed ino 385 off 2927898624 
csum 3464250141 expected csum 1621289634
[ 9505.492382] BTRFS warning (device sda): csum failed ino 385 off 2927902720 
csum 2214000308 expected csum 2797028572
[ 9505.492387] BTRFS warning (device sda): csum failed ino 385 off 2927906816 
csum 3719155761 expected csum 561200354
[ 9505.492392] BTRFS warning (device sda): csum failed ino 385 off 2927910912 
csum 98768328 expected csum 1311354303
[ 9505.492397] BTRFS warning (device sda): csum failed ino 385 off 2927915008 
csum 996429330 expected csum 1552366519
[ 9505.492402] BTRFS warning (device sda): csum failed ino 385 off 2927919104 
csum 729502971 expected csum 57406087
[ 9505.492407] BTRFS warning (device sda): csum failed ino 385 off 2927923200 
csum 1688454633 expected csum 4263548653
[ 9515.428150] BTRFS info (device sda): relocating block group 66338809643008 
flags 129
[ 9534.605158] __readpage_endio_check: 7 callbacks suppressed
[ 9534.605165] BTRFS warning (device sda): csum failed ino 386 off 2927886336 
csum 1204172668 expected csum 3738892907
[ 9534.605174] BTRFS warning (device sda): csum failed ino 386 off 2927890432 
csum 645393967 expected csum 1519548271
[ 9534.605184] BTRFS warning (device sda): csum failed ino 386 off 2927894528 
csum 3254966910 expected csum 2168664573
[ 9534.605192] BTRFS warning (device sda): csum failed ino 386 off 2927898624 
csum 3464250141 expected csum 1621289634
[ 9534.605194] BTRFS warning (device sda): csum failed ino 386 off 2927902720 
csum 2214000308 expected csum 2797028572
[ 9534.605198] BTRFS warning (device sda): csum failed ino 386 off 2927906816 
csum 3719155761 expected csum 561200354
[ 9534.605204] BTRFS warning (device sda): csum failed ino 386 off 2927910912 
csum 98768328 expected csum 1311354303
[ 9534.605206] BTRFS warning (device sda): csum failed ino 386 off 2927915008 
csum 996429330 expected csum 1552366519
[ 9534.605212] BTRFS warning (device sda): csum failed ino 386 off 2927919104 
csum 729502971 expected csum 57406087
[ 9534.605215] BTRFS warning (device sda): csum failed ino 386 off 2927923200 
csum 1688454633 expected csum 4263548653
[ 9543.317995] BTRFS info (device sda): relocating block group 66338809643008 
flags 129
[ 9564.879155] __readpage_endio_check: 7 callbacks suppressed
[ 9564.879161] BTRFS warning (device sda): csum failed ino 387 off 2927886336 
csum 1204172668 expected csum 3738892907
[ 9564.879171] BTRFS warning (device sda): csum failed ino 387 off 2927890432 
csum 645393967 expected csum 1519548271
[ 9564.879176] BTRFS warning (device sda): csum failed ino 387 off 2927894528 
csum 3254966910 expected csum 2168664573
[ 9564.879182] BTRFS warning (device sda): csum failed ino 387 off 2927898624 
csum 3464250141 expected csum 1621289634
[ 9564.879187] BTRFS warning (device sda): csum failed ino 387 off 2927902720 
csum 2214000308 expected csum 2797028572
[ 9564.879192] BTRFS warning (device sda): csum failed ino 387 off 2927906816 
csum 3719155761 expected csum 561200354
[ 9564.879196] BTRFS warning (device sda): csum failed ino 387 off 2927910912 
csum 98768328 expected csum 1311354303
[ 9564.879202] BTRFS warning (device sda): csum failed ino 387 off 2927915008 
csum 996429330 expected csum 1552366519
[ 9564.879207] BTRFS warning (device sda): csum failed ino 387 off 2927919104 
csum 729502971 expected csum 57406087
[ 9564.879212] BTRFS warning (device sda): csum failed ino 387 off 2927923200 
csum 1688454633 expected csum 4263548653



# smartctl -a /dev/sda
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-4.1.0-custom+] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda 7200.14 (AF)
Device Model:     ST3000DM001-1CH166
Serial Number:    XXXXXXXX
LU WWN Device Id: 5 000c50 04eee2715
Firmware Version: CC29
User Capacity:    3,000,592,982,016 bytes [3.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-2, ACS-3 T13/2161-D revision 3b
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Fri Jul 10 03:43:08 2015 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x82) Offline data collection activity
                                          was completed without error.
                                          Auto Offline Data Collection: Enabled.
Self-test execution status:      (   0) The previous self-test routine completed
                                          without error or no self-test has ever
                                          been run.
Total time to complete Offline
data collection:                (  584) seconds.
Offline data collection
capabilities:                    (0x7b) SMART execute Offline immediate.
                                          Auto Offline data collection on/off 
support.
                                          Suspend Offline collection upon new
                                          command.
                                          Offline surface scan supported.
                                          Self-test supported.
                                          Conveyance Self-test supported.
                                          Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
                                          power-saving mode.
                                          Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
                                          General Purpose Logging supported.
Short self-test routine
recommended polling time:        (   1) minutes.
Extended self-test routine
recommended polling time:        ( 336) minutes.
Conveyance self-test routine
recommended polling time:        (   2) minutes.
SCT capabilities:              (0x3085) SCT Status supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  
WHEN_FAILED RAW_VALUE
    1 Raw_Read_Error_Rate     0x000f   108   099   006    Pre-fail  Always      
 -       15470024
    3 Spin_Up_Time            0x0003   094   093   000    Pre-fail  Always      
 -       0
    4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always      
 -       92
    5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always      
 -       0
    7 Seek_Error_Rate         0x000f   075   059   030    Pre-fail  Always      
 -       47614627725
    9 Power_On_Hours          0x0032   077   077   000    Old_age   Always      
 -       20473
   10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always      
 -       0
   12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always      
 -       91
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       
-       0
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       
-       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       
-       0
188 Command_Timeout         0x0032   100   099   000    Old_age   Always       
-       0 0 6
189 High_Fly_Writes         0x003a   083   083   000    Old_age   Always       
-       17
190 Airflow_Temperature_Cel 0x0022   067   061   045    Old_age   Always       
-       33 (Min/Max 26/33)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       
-       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       
-       42
193 Load_Cycle_Count        0x0032   100   100   000    Old_age   Always       
-       219
194 Temperature_Celsius     0x0022   033   040   000    Old_age   Always       
-       33 (0 17 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       
-       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      
-       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       
-       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      
-       20467h+17m+19.660s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      
-       127039808220
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      
-       92772194111

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

SMART Selective self-test log data structure revision number 1
   SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
      1        0        0  Not_testing
      2        0        0  Not_testing
      3        0        0  Not_testing
      4        0        0  Not_testing
      5        0        0  Not_testing
Selective self-test flags (0x0):
    After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
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