Re: [dmcache] Re: Error on flashcache/metadata (device-mapper: reload ioctl on cache10 failed: Invalid argument)

[Dulcardo Arteaga]

Hello casey!

I see that you found a solution. I also see that you are using dm-cache version that actually come with kernel 3.9

If you are interested on trying dm-cache, you can take a look of our own dm-cache (also work with kernel 2.6.18 and 3.0.x)

Also we have a version that allow you to shared the cache for virtualized environments.

https://github.com/mingzhao/dm-cache/tree/master/stable

http://visa.cs.fiu.edu/tiki/dm-cache

Regards,

-Dulcardo

On Wed, Jun 5, 2013 at 8:26 AM, <ca...@cogolabs.com> wrote:

Reducing the size of the partition used for the metadata device did the trick.

On Tuesday, June 4, 2013 3:30:20 PM UTC-4, ca...@cogolabs.com wrote:

Trying to setup a testing environment for dm-cache.  Here's some info:

[root@localhost /]# dmsetup create cache10 --table '0 1463812096 cache /dev/sdd2 /dev/mapper/ssdraid10-ssdraid10one /dev/mapper/dataraid10-dataraid10one 512 1 writethrough default 0'

device-mapper: reload ioctl on cache10 failed: Invalid argument

Command failed

[root@localhost /]# tail -F /var/log/messages

...

Jun  4 15:28:11 localhost kernel: [ 2330.521916] device-mapper: cache: Metadata device sdd2 is larger than 33423360 sectors: excess space will not be used.

Jun  4 15:28:11 localhost kernel: [ 2330.643354] device-mapper: space map common: space map too large

Jun  4 15:28:11 localhost kernel: [ 2330.649220] device-mapper: transaction manager: couldn't create metadata space map

Jun  4 15:28:11 localhost kernel: [ 2330.655100] device-mapper: cache metadata: tm_create_with_sm failed

Jun  4 15:28:11 localhost kernel: [ 2330.751746] device-mapper: table: 253:5: cache: Error creating metadata object

Jun  4 15:28:11 localhost kernel: [ 2330.757622] device-mapper: ioctl: error adding target to table

[root@localhost /]# blockdev --getsz /dev/mapper/dataraid10-dataraid10one 

1463812096

[root@localhost /]# uname -r

3.9.2-301.fc19.x86_64

[root@localhost /]# smartctl -i /dev/sdd

smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.9.2-301.fc19.x86_64] (local build)

Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===

Device Model:     OCZ VERTEX PLUS

Serial Number:    

Firmware Version: 3.50

User Capacity:    120,034,123,776 bytes [120 GB]

Sector Size:      512 bytes logical/physical

Rotation Rate:    Solid State Device

Device is:        Not in smartctl database [for details use: -P showall]

ATA Version is:   ATA8-ACS (minor revision not indicated)

Local Time is:    Tue Jun  4 15:18:37 2013 EDT

SMART support is: Available - device has SMART capability.

SMART support is: Enabled

[root@localhost /]# lvdisplay

...

--- Logical volume ---

  LV Path                /dev/ssdraid10/ssdraid10one

  LV Name                ssdraid10one

  VG Name                ssdraid10

  LV UUID                9aOdcT-bGvC-ad5a-V6Wx-eSo4-iXM9-QaiMQ4

  LV Write Access        read/write

  LV Creation host, time localhost.localdomain, 2013-06-04 14:34:29 -0400

  LV Status              available

  # open                 0

  LV Size                190.00 GiB

  Current LE             190

  Segments               1

  Allocation             inherit

  Read ahead sectors     auto

  - currently set to     256

  Block device           253:2

   

  --- Logical volume ---

  LV Path                /dev/dataraid10/dataraid10one

  LV Name                dataraid10one

  VG Name                dataraid10

  LV UUID                cVitYJ-Tkvl-lzY4-wcGT-wQLf-bu45-xImXda

  LV Write Access        read/write

  LV Creation host, time localhost.localdomain, 2013-06-04 14:34:08 -0400

  LV Status              available

  # open                 0

  LV Size                698.00 GiB

  Current LE             698

  Segments               1

  Allocation             inherit

  Read ahead sectors     auto

  - currently set to     256

  Block device           253:3

Going to take a look at the source and see if I can figure out what's going on.  If anything is immediately clear to you please let me know.  If you need any additional info let me know.

Thanks!

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--
-Dulcardo