Hello;

I know this section. J

However, there is no further detail what kind of information is kept here 
according to what?

Best regards;

 

 

From: Tony Griffiths [mailto:[email protected]] 
Sent: Monday, May 09, 2011 11:34 AM
To: Asiye Yigit; [email protected]
Subject: RE: RAID-5 LOGGING

 

Hi

The RAID5 log is used to recover from a double failure (Disk failure + sys 
crash). The RAID5 log is used to log all data and parity writes before 
committing them. Following a system crash the log will be replayed to the 
volume. There is a section in the admin guide:

 

https://sort.symantec.com/public/documents/sfha/5.1sp1/solaris/productguides/html/vxvm_admin/ch01s04s09s04.htm

 

Cheers

tony

 

 

From: [email protected] 
[mailto:[email protected]] On Behalf Of Asiye Yigit
Sent: 07 May 2011 17:07
To: [email protected]
Subject: [Veritas-vx] RAID-5 LOGGING

 

Hello all;

İt is recommended to add raid-5 log device to the volume to recover the correct 
data in any case including system crash.

However, I am trying to understand how the data and parity changes are logged 
here? Do you know the structure of this area?

Data and parity itself couldn't write here, if it is like that those area 
should be big enough.

As far as i know, it is small area.

What kind of information for each data and parity changes is holdin here to 
re-paly the log?

Regards;

 

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