From: venu madhav (venumadhavgowru@yahoo.com)
Date: Tue Jun 17 2003 - 00:55:37 EDT
Hello Sir/Madam,
I am(venu) recently joined as an solaris administrator
in MNC. The company having upto 20 servers all are SUN
Enterprize servers and one of server attached to D1000
array with 7 drives. first 2 drives are system drives
and rest of 5 drives are non system drives. Here I
implemented RAID 1 for first 2 drives(system drives)
and next 4 drives are for data drives with RAID 5. and
7th drive is Hotspare drive.
If any one drive crash/bad drive from RAID 5 then
automatically Hotspare drive will take care but my
doubt is if 2 drives crash/bad at a time from RAID 5
then anydata loss because of only one Hotspare.
how to manage if the situation like this. Pls suggest
me how to proceed if I get like this situation.
Thanks for receiving my mail inadvance,
Sincerely,
venu
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----------------------------------------------------------------------
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> Message: 1
> Date: Mon, 16 Jun 2003 09:06:25 -0700
> From: Brian Lucas <BLucas@accela.com>
> Subject: NEWBIE 9: Logical Volume Manager
> To: "'sunmanagers@sunmanagers.org'"
> <sunmanagers@sunmanagers.org>
> Message-ID:
>
>
<0E519066D584B0468F496C29F88916518780AA@kiva-d6400.accela.com>
> Content-Type: text/plain; charset="us-ascii"
>
> I'm using a Sun Solaris 4500 with a StorEdge 5200
> box running Solaris 9.
> I'm using Sun's logical volume manager to arrange
> the 22 disks in a 0+1
> array for different volumes u01, u02, u03. The
> disks are arranged as
> follows:
>
>
>
> /u01
>
> Mirror d1
>
> Submirror d11 (RAID 0)
>
> Submirror d12 (RAID 0)
>
>
>
> /u02
>
> Mirror d2
>
> Submirror d21 (RAID 0)
>
> Submirror d22 (RAID 0)
>
>
>
> /u03
>
> Mirror d3
>
> Submirror d31 (RAID 0)
>
> Submirror d32 (RAID 0)
>
>
>
> I ran metastat and noticed that all volumes have
> disks that have the State
> of "Last Erred" or "Maintenance." The disks
> themselves are new and I'm not
> sure how to clear the errors. Earlier, I ran
> metadetach on a submirror and
> then rebuilt the mirror and the message of
> "Maintenance" went away but that
> seems awfully round-about. What is the easiest,
> recommended way to clear
> these errors. I've included the output for /u02's
> metastat as a reference.
>
>
>
> # metastat d2
>
> d2: Mirror
>
> Submirror 0: d21
>
> State: Needs maintenance
>
> Submirror 1: d22
>
> State: Needs maintenance
>
> Pass: 1
>
> Read option: roundrobin (default)
>
> Write option: parallel (default)
>
> Size: 141435392 blocks
>
>
>
> d21: Submirror of d2
>
> State: Needs maintenance
>
> Invoke: metareplace d2 c3t3d0s2 <new device>
>
> Size: 141435392 blocks
>
> Stripe 0: (interlace: 32 blocks)
>
> Device Start Block Dbase State
> Reloc Hot Spare
>
> c3t3d0s2 9424 Yes Maintenance
> Yes
>
> c3t4d0s2 9424 Yes Maintenance
> Yes
>
> c3t5d0s2 9424 Yes Maintenance
> Yes
>
> c3t6d0s2 9424 Yes Maintenance
> Yes
>
>
>
>
>
> d22: Submirror of d2
>
> State: Needs maintenance
>
> Invoke: after replacing "Maintenance"
> components:
>
> metareplace d2 c0t19d0s2 <new
> device>
>
> Size: 141435392 blocks
>
> Stripe 0: (interlace: 32 blocks)
>
> Device Start Block Dbase State
> Reloc Hot Spare
>
> c0t19d0s2 9424 No Last Erred
> Yes
>
> c0t20d0s2 9424 No Last Erred
> Yes
>
> c0t21d0s2 9424 No Last Erred
> Yes
>
> c0t22d0s2 9424 Yes Last Erred
> Yes
>
>
>
>
>
> Device Relocation Information:
>
> Device Reloc Device ID
>
> c3t3d0 Yes id1,ssd@w2000002037ba289e
>
> c3t4d0 Yes id1,ssd@w2000002037605c5d
>
>
=== message truncated ===
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