Red Hat Bugzilla – Bug 66569
megaraid install hang with 4kb stripe size
Last modified: 2007-04-18 12:43:07 EDT
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Description of problem:
HP NetRAID-1M/2M with 4k byte stripe size cause following errors.
Then system hang. Default stripe size (64kb) is OK.
Use older megaraid (1.15hp), it works fine.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Create 4kb stripe size LU on NetRAID 1M/2M
2. Install RH7.3 from CD-ROM
Actual Results: Install never finish because of errors.
Blocked mailbox.....!! scsi timeout
Expected Results: Finish install.
This problem went into megaraid source code between version 1.15 (1.15hp) and 1.18.
The workaround that we found was, use default stripe size or bigger.
LSI has informed us that a 4Kb stripe size is not supported well with their
firmware. We have had a LOT of problems with 4Kb sizes before, and it has costed
us dearly. It is an official recommendation to NOT use 4Kb stripes with AMI/LSI
megaraid (and OEM variants) hardware.
OK, if 4kb is not recommended or not supported, my next question is,
which stripe size is recommended & supported.
I remember the default of the stripe size is 64kb.
And I would like to know which stripe size has tested by LSI or RedHat?
LSI fixed the firmware;.