[Bug 337284] [NEW] dmraid fails to activate isw due to incorrect disk size (dmraid rc15)

[danwood76]

Public bug reported:

Binary package hint: dmraid

My two ISW raid 0 sets work fine with the previous version of dmraid (rc14 in intrepid).
I have been constantly checking the daily builds of jaunty to see if they works in alpha 4 where they didnt work at all.

With the latest daily build and version of dmraid my RAID sets fail to activate.
Here is the output of dmraid -ay:

sudo dmraid -ay
RAID set "isw_bbbbfiiiih_HD1" already active
RAID set "isw_cjfgejeghi_HD3" already active
ERROR: dos: partition address past end of RAID device
RAID set "isw_bbbbfiiiih_HD11" already active

I have done a bit of checking between my working version of intrepid and this daily build.
On rc14 the output of dmraid -s is as follows:

*** Group superset isw_cjfgejeghi
--> Active Subset
name   : isw_cjfgejeghi_HD3
size   : 1953536512
stride : 256
type   : stripe
status : ok
subsets: 0
devs   : 2
spares : 0
*** Group superset isw_bbbbfiiiih
--> Active Subset
name   : isw_bbbbfiiiih_HD1
size   : 312592896
stride : 256
type   : stripe
status : ok
subsets: 0
devs   : 2
spares : 0

And on RC15:

*** Group superset isw_bbbbfiiiih
--> Active Subset
name   : isw_bbbbfiiiih_HD1
size   : 312591872
stride : 256
type   : stripe
status : ok
subsets: 0
devs   : 2
spares : 0
*** Group superset isw_cjfgejeghi
--> Active Subset
name   : isw_cjfgejeghi_HD3
size   : 1953535488
stride : 256
type   : stripe
status : ok
subsets: 0
devs   : 2
spares : 0

Notice the difference in size, the new one is 1024 sectors less on each
set which is where my problem lies.

Both sets were originally built using rc14 (I think),
I am wondering what has changed between the two versions and what information dmraid uses to calculate the drive size, as one of them must be correct.

Let me know if more information is required.

** Affects: dmraid (Ubuntu)
     Importance: Undecided
         Status: New

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dmraid fails to activate isw due to incorrect disk size (dmraid rc15)
https://bugs.launchpad.net/bugs/337284
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