From: Tony Howat (t.howat@linst.ac.uk)
Date: Wed Mar 03 2004 - 11:03:32 EST
Managers,
I have a 280R with two mirrored bootable SDS disks installed.
OS: SunOS nms2 5.8 Generic_108528-23 sun4u sparc SUNW,Sun-Fire-280R
I've had a consistant issue with SDS having a penchant for resyncing every
time we reboot the box. The box runs Solaris 8. I have similar Solaris 9
based SDS installs which never do this.
Now, until today I've kind of ignored the problem, not noticing any data
loss and figuring a resync was hardly the worst thing that could happen.
Now it's jumped up and bitten me on the arse, to use the technical term.
It seems to have resynced a bizarrely old mirror of the partition, even
more strangely one that's in a consistent state. The metastat output when
we rebooted was :
SDS metadevice problem report for Tue Mar 2 2004
Metadevices are not Okay:
d30: Mirror
Submirror 0: d10
State: Okay
Submirror 1: d20
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 529152 blocks
d10: Submirror of d30
State: Okay
Size: 529152 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t0d0s0 0 No Okay
d20: Submirror of d30
State: Okay
Size: 529152 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t1d0s0 0 No Okay
d31: Mirror
Submirror 0: d11
State: Okay
Submirror 1: d21
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 8395200 blocks
d11: Submirror of d31
State: Okay
Size: 8395200 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t0d0s1 0 No Okay
d21: Submirror of d31
State: Okay
Size: 8395200 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t1d0s1 0 No Okay
d32: Mirror
Submirror 0: d12
State: Okay
Submirror 1: d22
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 6298944 blocks
d12: Submirror of d32
State: Okay
Size: 6298944 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t0d0s3 0 No Okay
d22: Submirror of d32
State: Okay
Size: 6298944 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t1d0s3 0 No Okay
d33: Mirror
Submirror 0: d13
State: Okay
Submirror 1: d23
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 4202688 blocks
d13: Submirror of d33
State: Okay
Size: 4202688 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t0d0s4 0 No Okay
d23: Submirror of d33
State: Okay
Size: 4202688 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t1d0s4 0 No Okay
d34: Mirror
Submirror 0: d14
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 2106432 blocks
d14: Submirror of d34
State: Okay
Size: 2106432 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t0d0s5 0 No Okay
d24: Concat/Stripe
Size: 2106432 blocks
Stripe 0:
Device Start Block Dbase
c1t1d0s5 0 No
d101: Soft Partition
Component: d35
State: Okay
Size: 1048576 blocks
Extent Start Block Block count
0 1 1048576
d102: Soft Partition
Component: d35
State: Okay
Size: 20971520 blocks
Extent Start Block Block count
0 1048578 20971520
d103: Soft Partition
Component: d35
State: Okay
Size: 41943040 blocks
Extent Start Block Block count
0 22020099 41943040
d104: Soft Partition
Component: d35
State: Okay
Size: 4194304 blocks
Extent Start Block Block count
0 63963140 4194304
d105: Soft Partition
Component: d35
State: Okay
Size: 2097152 blocks
Extent Start Block Block count
0 68157445 2097152
d35: Mirror
Submirror 0: d15
State: Resyncing
Submirror 1: d25
State: Resyncing
Resync in progress: 11 % done
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 121704960 blocks
d15: Submirror of d35
State: Resyncing
Size: 121704960 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t0d0s7 0 No Okay
d25: Submirror of d35
State: Resyncing
Size: 121704960 blocks
Stripe 0:
Device Start Block Dbase State Hot Spare
c1t1d0s7 0 No Okay
....the resync completes and my data has reverted back to how it was three
weeks ago or so.
system SUNWmdg Solstice DiskSuite Tool
system SUNWmdja Solstice DiskSuite Japanese localization
system SUNWmdnr Solstice DiskSuite Log Daemon Configuration Files
system SUNWmdnu Solstice DiskSuite Log Daemon
system SUNWmdr Solstice DiskSuite Drivers
system SUNWmdu Solstice DiskSuite Commands
system SUNWmdx Solstice DiskSuite Drivers(64-bit)
PKGINST: SUNWmdr
NAME: Solstice DiskSuite Drivers
CATEGORY: system
ARCH: sparc
VERSION: 4.2.1,REV=1999.12.03.10.00
I'm mystified as to how this could occur?
There are no automated restore systems on the machine which could cause the
effects.
Has anyone heard of similar?
-- Tony Howat UNIX Network Administrator The London Institute _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagers
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