Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Hi Adams,

Thanks for the response. Yes we have checked that as well.  We are good with mentioned VG PP size ect. We just want to know mentioned VG mirroring command is correct? 

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Hi Pasindu,

Yes, the syntax is totally correct; You might want to have couple of additional parameters defined before the actual mirroring:

export NUM_PARALLEL_LPS=16. # The value of NUM_PARALLEL_LPS will be used to set the number of logical partitions to be synchronized in parallel. We have noted that 16 is "good" value.
export LVM_HOTSWAP_BOOTDISK=1 #See https://www.ibm.com/support/pages/unable-mirror-aix-rootvg-due-error-code-0516-1259

Are you planning to keep the mirroring? Or will you remove the old disks from the config once datas are mirrored to the new disks?

Br,

tommi

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Hi Tommi,

Thanks for the response.  We are planning to remove the old disks once data's are mirrored to the new disks. 

Thanks,

Pasindu Malintha. 

Hi Pasindu,

Yes, the syntax is totally correct; You might want to have couple of additional parameters defined before the actual mirroring:

export NUM_PARALLEL_LPS=16. # The value of NUM_PARALLEL_LPS will be used to set the number of logical partitions to be synchronized in parallel. We have noted that 16 is "good" value.
export LVM_HOTSWAP_BOOTDISK=1 #See https://www.ibm.com/support/pages/unable-mirror-aix-rootvg-due-error-code-0516-1259

Are you planning to keep the mirroring? Or will you remove the old disks from the config once datas are mirrored to the new disks?

Br,

tommi

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Ok, is this for some datavg only, or do you have rootvg included in the mirroring?

------------------------------
Tommi Sihvo, Lead Service Architect
Tietoevry Tech Services
email tommi.sihvo@tietoevry.com mobile +358 (0)40 5180 Finland

Original Message:
Sent: Mon August 26, 2024 01:08 AM
From: Pasindu Malintha
Subject: AIX VG Mirroring

Hi Tommi,

Thanks for the response.  We are planning to remove the old disks once data's are mirrored to the new disks. 

Thanks,

Pasindu Malintha. 

------------------------------
Pasindu Malintha

Original Message:
Sent: Mon August 26, 2024 01:01 AM
From: Tommi Sihvo
Subject: AIX VG Mirroring

Hi Pasindu,

Yes, the syntax is totally correct; You might want to have couple of additional parameters defined before the actual mirroring:

export NUM_PARALLEL_LPS=16. # The value of NUM_PARALLEL_LPS will be used to set the number of logical partitions to be synchronized in parallel. We have noted that 16 is "good" value.
export LVM_HOTSWAP_BOOTDISK=1 #See https://www.ibm.com/support/pages/unable-mirror-aix-rootvg-due-error-code-0516-1259

Are you planning to keep the mirroring? Or will you remove the old disks from the config once datas are mirrored to the new disks?

Br,

tommi

------------------------------
Tommi Sihvo, Lead Service Architect
Tietoevry Tech Services
email tommi.sihvo@tietoevry.com mobile +358 (0)40 5180 Finland

Original Message:
Sent: Sun August 25, 2024 07:36 AM
From: Pasindu Malintha
Subject: AIX VG Mirroring

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

------------------------------
Pasindu Malintha
------------------------------

Hi Tommi,

We are having both datavg and rootvg. For the rootvg we need to follow the steps (bosboot related steps) mentioned on the link.

https://www.ibm.com/support/pages/steps-replacing-aix%C2%AE-disk-another-new-disk-vg 

Thanks,

Pasindu Malintha. 

------------------------------
Pasindu Malintha

Original Message:
Sent: Mon August 26, 2024 01:12 AM
From: Tommi Sihvo
Subject: AIX VG Mirroring

Ok, is this for some datavg only, or do you have rootvg included in the mirroring?

------------------------------
Tommi Sihvo, Lead Service Architect
Tietoevry Tech Services
email tommi.sihvo@tietoevry.com mobile +358 (0)40 5180 Finland

Original Message:
Sent: Mon August 26, 2024 01:08 AM
From: Pasindu Malintha
Subject: AIX VG Mirroring

Hi Tommi,

Thanks for the response.  We are planning to remove the old disks once data's are mirrored to the new disks. 

Thanks,

Pasindu Malintha. 

------------------------------
Pasindu Malintha

Original Message:
Sent: Mon August 26, 2024 01:01 AM
From: Tommi Sihvo
Subject: AIX VG Mirroring

Hi Pasindu,

Yes, the syntax is totally correct; You might want to have couple of additional parameters defined before the actual mirroring:

export NUM_PARALLEL_LPS=16. # The value of NUM_PARALLEL_LPS will be used to set the number of logical partitions to be synchronized in parallel. We have noted that 16 is "good" value.
export LVM_HOTSWAP_BOOTDISK=1 #See https://www.ibm.com/support/pages/unable-mirror-aix-rootvg-due-error-code-0516-1259

Are you planning to keep the mirroring? Or will you remove the old disks from the config once datas are mirrored to the new disks?

Br,

tommi

------------------------------
Tommi Sihvo, Lead Service Architect
Tietoevry Tech Services
email tommi.sihvo@tietoevry.com mobile +358 (0)40 5180 Finland

Original Message:
Sent: Sun August 25, 2024 07:36 AM
From: Pasindu Malintha
Subject: AIX VG Mirroring

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

------------------------------
Pasindu Malintha
------------------------------

Hi Tommi,

Thanks for the response.  We are planning to remove the old disks once data's are mirrored to the new disks. 

Thanks,

Pasindu Malintha. 

Hi Pasindu,

Yes, the syntax is totally correct; You might want to have couple of additional parameters defined before the actual mirroring:

export NUM_PARALLEL_LPS=16. # The value of NUM_PARALLEL_LPS will be used to set the number of logical partitions to be synchronized in parallel. We have noted that 16 is "good" value.
export LVM_HOTSWAP_BOOTDISK=1 #See https://www.ibm.com/support/pages/unable-mirror-aix-rootvg-due-error-code-0516-1259

Are you planning to keep the mirroring? Or will you remove the old disks from the config once datas are mirrored to the new disks?

Br,

tommi

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

If you just want to replace disks/LUNs you want migratepv.

Much simpler than dealing with mirroring.

Hi Tommi,

Thanks for the response.  We are planning to remove the old disks once data's are mirrored to the new disks. 

Thanks,

Pasindu Malintha. 

Hi Pasindu,

Yes, the syntax is totally correct; You might want to have couple of additional parameters defined before the actual mirroring:

export NUM_PARALLEL_LPS=16. # The value of NUM_PARALLEL_LPS will be used to set the number of logical partitions to be synchronized in parallel. We have noted that 16 is "good" value.
export LVM_HOTSWAP_BOOTDISK=1 #See https://www.ibm.com/support/pages/unable-mirror-aix-rootvg-due-error-code-0516-1259

Are you planning to keep the mirroring? Or will you remove the old disks from the config once datas are mirrored to the new disks?

Br,

tommi

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Mirrorvg is more efficient and you can follow progress. You can run parallel copy streams as well.

If you just want to replace disks/LUNs you want migratepv.

Much simpler than dealing with mirroring.

Hi Tommi,

Thanks for the response.  We are planning to remove the old disks once data's are mirrored to the new disks. 

Thanks,

Pasindu Malintha. 

Hi Pasindu,

Yes, the syntax is totally correct; You might want to have couple of additional parameters defined before the actual mirroring:

export NUM_PARALLEL_LPS=16. # The value of NUM_PARALLEL_LPS will be used to set the number of logical partitions to be synchronized in parallel. We have noted that 16 is "good" value.
export LVM_HOTSWAP_BOOTDISK=1 #See https://www.ibm.com/support/pages/unable-mirror-aix-rootvg-due-error-code-0516-1259

Are you planning to keep the mirroring? Or will you remove the old disks from the config once datas are mirrored to the new disks?

Br,

tommi

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.

Are you using mirrorvg with one of the -S/-s options and then following up with syncvg -p #?

Monitoring is done with syncvg -q/-Q?

I remember having to use migratepv to keep the VG under the max pp limit and I think I monitored the change by watching the change in PP counts from lsvg -p. I had a script that would add a LUN, migrate to it and then remove the empty LUN repeating for each old LUN.

There are discussions about replacing the SAN again and if they do I will have to migrate the storage for the third time.

Mirrorvg is more efficient and you can follow progress. You can run parallel copy streams as well.

If you just want to replace disks/LUNs you want migratepv.

Much simpler than dealing with mirroring.

Hi Tommi,

Thanks for the response.  We are planning to remove the old disks once data's are mirrored to the new disks. 

Thanks,

Pasindu Malintha. 

Hi Pasindu,

Yes, the syntax is totally correct; You might want to have couple of additional parameters defined before the actual mirroring:

export NUM_PARALLEL_LPS=16. # The value of NUM_PARALLEL_LPS will be used to set the number of logical partitions to be synchronized in parallel. We have noted that 16 is "good" value.
export LVM_HOTSWAP_BOOTDISK=1 #See https://www.ibm.com/support/pages/unable-mirror-aix-rootvg-due-error-code-0516-1259

Are you planning to keep the mirroring? Or will you remove the old disks from the config once datas are mirrored to the new disks?

Br,

tommi

Hi Team,

We are planning to perform the VG mirroring. In our setup we are having three physical disks in VG. Our plan is to extend VG with same capacity physical disks (3 nos) and perform the VG mirroring using the below command.  

extendvg <vgname> hdisk3 hdisk4 hdisk5

mirrorvg -S <vgname> hdisk3 hdisk4 hdisk5

Is the above process is correct ? or we need to change the mirrorvg command as below.

mirrorvg -m -S <vgname> hdisk3 hdisk4 hdisk5

Please advice.

Thanks,

Pasindu Malintha.