Bug 119124 - mdadm, sync failed when creating raid level 1 disks
mdadm, sync failed when creating raid level 1 disks
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: mdadm (Show other bugs)
s390x Linux
high Severity high
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Assigned To: Doug Ledford
Depends On:
  Show dependency treegraph
Reported: 2004-03-25 05:49 EST by Arnold Fox
Modified: 2007-11-30 17:07 EST (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2005-02-16 11:55:38 EST
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
error messages & log file (6.57 KB, text/plain)
2004-03-25 05:59 EST, Arnold Fox
no flags Details

  None (edit)
Description Arnold Fox 2004-03-25 05:49:32 EST
Description of problem:

mdadm failed to build raid level 1 disks

Version-Release number of selected component (if applicable):

How reproducible:
every time

Steps to Reproduce:
Create or assemble a raid1 disk
   mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/dasd[vj]1
   mdadm --assemble /dev/md0 /dev/dasd[vj]1

Actual results:
raid level 1 disk starts with just 1 volume

md0 : active raid1 dasdv1[1] dasdj1[0](F)
      2403904 blocks [2/1] [_U]

Expected results:

Additional info:

system config:
   RHEL AS 3 Update 1 runing in LPAR mode
   3390 type 3 volumes on ESS800 (ficon direct attached)

linear and raid level 0 disks are working fine
Comment 1 Arnold Fox 2004-03-25 05:59:46 EST
Created attachment 98845 [details]
error messages & log file
Comment 2 Georg Markgraf 2004-03-25 08:38:54 EST
Looking into the log, the problem is:
 'md'  generates requests with a size of 2048 bytes, the dasd is 
formattet with a block size of 4096 bytes.!
=> correct the md 
(from the Syslog:)
Mar 24 17:17:11 boelinlp10 kernel: dasd(eckd): ignoring bogus sized 
request: 2048<4096
Mar 24 17:17:11 boelinlp10 kernel: dasd: (b006) CCW creation failed 
on request 00000000fa32e900
Comment 8 Mike Gahagan 2005-02-16 11:55:38 EST
This should be fixed since U2, please re-open the bug if you still see this
problem with the lastest update (U4).

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