8.1 amd64 lockup (maybe zfs or disk related)
greg at bonett.org
Mon Feb 7 07:50:43 UTC 2011
Thanks for the response.
I have no tunings in /boot/loader.conf
according to http://wiki.freebsd.org/ZFSTuningGuide for amd64
"FreeBSD 7.2+ has improved kernel memory allocation strategy and no
tuning may be necessary on systems with more than 2 GB of RAM. "
I have 8GB of ram.
do you think this is wrong?
Handbook recommends these (but says their test system has 1gb ram):
what do you recommend?
I think the ad0: FAILURE - READ_DMA4 errors may be from a bad sata cable
(or rather, a 12in sata cable connecting a drive that is one inch away)
I'm ordering a new drive bay to improve this, but should a bad cable
Thanks for your help.
Here's my smartctl output:
#smartctl -a /dev/ad0
smartctl 5.40 2010-10-16 r3189 [FreeBSD 8.1-RELEASE amd64] (local build)
Copyright (C) 2002-10 by Bruce Allen,
=== START OF INFORMATION SECTION ===
Model Family: Western Digital Caviar Green (Adv. Format) family
Device Model: WDC WD10EARS-00Y5B1
Serial Number: WD-WCAV55616522
Firmware Version: 80.00A80
User Capacity: 1,000,204,886,016 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 8
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Sun Feb 6 23:42:17 2011 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x84) Offline data collection activity
was suspended by an interrupting
command from host.
Auto Offline Data Collection:
Self-test execution status: ( 0) The previous self-test routine
without error or no self-test
Total time to complete Offline
data collection: (20460) seconds.
Offline data collection
capabilities: (0x7b) SMART execute Offline immediate.
Auto Offline data collection
Suspend Offline collection upon
Offline surface scan supported.
Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 236) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x3031) SCT Status supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE
UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always
3 Spin_Up_Time 0x0027 121 121 021 Pre-fail Always
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always
9 Power_On_Hours 0x0032 097 097 000 Old_age Always
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always
193 Load_Cycle_Count 0x0032 135 135 000 Old_age Always
194 Temperature_Celsius 0x0022 125 114 000 Old_age Always
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age
Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always
200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age
Offline - 0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining
# 1 Short offline Completed without error 00% 1536
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute
On Sun, 2011-02-06 at 20:55 -0800, Jeremy Chadwick wrote:
> On Sun, Feb 06, 2011 at 01:01:14PM -0800, Greg Bonett wrote:
> > Hi all,
> > I am experiencing hard lockup when running 8.1-RELEASE amd64. The last
> > two times it has happened I was running a zpool scrub (high cpu and io
> > load). /var/log/messages has some errors looking like:
> > kernel: ad0: FAILURE - READ_DMA4
> > but these didn't seem to correspond to the exact time of the lockup.
> > any suggestions?
> Given that you're running 8.1-RELEASE, what sort of ZFS tunings are you
> using in /boot/loader.conf? Tuning is required on this version.
> The ad0 READ_DMA48 errors could indicate you have a hard disk with bad
> blocks or is going bad in a different manner. Please install
> ports/sysutils/smartmontools and provide output of "smartctl -a
> /dev/ad0" here and I can help you determine that.
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