Date: Thu, 04 Dec 2014 12:03:54 -0500 From: Mike Tancsa <mike@sentex.net> To: freebsd-questions <freebsd-questions@freebsd.org> Subject: megacli / mfi driver powersave mode Message-ID: <548093FA.8030008@sentex.net>
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More a "for the archives post" as it took me a while to find this, but
if you are using an mfi based controller and using the disks as
unconfigured jbod, the mfi controller might by default spindown inactive
drives. If you have a somewhat busy server, this is not an issue.
The drive will spin down with a message to the console something like
Power state change on PD 1d(e0xf5/s0) from ON(0) to POWERSAVE(1)
Writing to the disk will spin it up, but this can take a bit of time and
can cause an OS error. To disable this behavior, the MegaCli tool from
the ports seems to be able to adjust this setting. ( I tried from the
BIOS, and its not there)
# MegaCli -AdpSetProp -EnblSpinDownUnConfigDrvs 0 -aAll
Adapter 0: Set Disable Spin Down of Unconfigured Drives : success.
Exit Code: 0x00
My card is a 9240-8i
# mfiutil show firmware
mfi0 Firmware Package Version: 20.13.1-0208
mfi0 Firmware Images:
Name Version Date Time Status
BIOS 4.38.02.2_4.16.08.00_0x06060A05 07/23/2014
07/23/2014
active
PCLI 03.02-020:#%00009 May 07 2012 13:21:53 active
BCON 4.0-61-e_50-Rel Sep 09 2014 11:45:57 active
NVDT 3.09.03-0064 Oct 06 2014 12:00:15 active
APP 2.130.404-3836 Oct 16 2014 06:50:12 active
BTBL 2.02.00.00-0001 Aug 18 2010 11:44:44 active
# mfiutil show adapter
mfi0 Adapter:
Product Name: LSI MegaRAID SAS 9240-8i
Serial Number: SP12147654
Firmware: 20.13.1-0208
RAID Levels: JBOD, RAID0, RAID1, RAID5, RAID10, RAID50
Battery Backup: not present
NVRAM: 32K
Onboard Memory: 0M
Minimum Stripe: 8K
Maximum Stripe: 64K
A small caveat, the tool also lets you control the same behavior for hot
spares. However, the perspective is opposite.
# MegaCli -AdpSetProp -DsblSpinDownHSP 1 -aAll
Adapter 0: Set Disable spin Down of Hot Spares : success.
Exit Code: 0x00
vs
# MegaCli -AdpSetProp -EnblSpinDownUnConfigDrvs 0 -aAll
Adapter 0: Set Disable Spin Down of Unconfigured Drives : success.
Exit Code: 0x00
10.1-STABLE FreeBSD 10.1-STABLE #14 r275472: Wed Dec 3 22:46:51 EST
2014
---Mike
--
-------------------
Mike Tancsa, tel +1 519 651 3400
Sentex Communications, mike@sentex.net
Providing Internet services since 1994 www.sentex.net
Cambridge, Ontario Canada http://www.tancsa.com/
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