For an overview of the status information associated with RAID-1 volumes and submirrors, see Understanding Submirror Status to Determine Maintenance Actions.
Use one of the following methods to the check mirror or submirror status.
From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node. Choose the mirror. Then, choose Action⇒Properties. Follow the onscreen instructions. For more information, see the online help.
Run the metastat command on the mirror to view the status of each submirror.
# metastat mirror |
See How to Change RAID-1 Volume Options to change a mirror's pass number, read option, or write option.
See metastat(1M) for more information about checking device status.
Here is sample output from the metastat command. Use metastat command without a mirror name to display all the status of all mirrors.
# metastatd70: Mirror Submirror 0: d71 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 12593637 blocks d71: Submirror of d70 State: Okay Size: 12593637 blocks Stripe 0: Device Start Block Dbase State Reloc Hot Spare c1t3d0s3 0 No Okay Yes Stripe 1: Device Start Block Dbase State Reloc Hot Spare c1t3d0s4 0 No Okay Yes Stripe 2: Device Start Block Dbase State Reloc Hot Spare c1t3d0s5 0 No Okay Yes d0: Mirror Submirror 0: d1 State: Okay Submirror 1: d2 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 5600 blocks d1: Submirror of d0 State: Okay Size: 5600 blocks Stripe 0: Device Start Block Dbase State Hot Spare c0t2d0s7 0 No Okay ... |
Use the metastat command with a mirror name argument to display output for a specific mirror.
metastat d70 d70: Mirror Submirror 0: d71 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 12593637 blocks d71: Submirror of d70 State: Okay Size: 12593637 blocks Stripe 0: Device Start Block Dbase State Reloc Hot Spare c1t3d0s3 0 No Okay Yes Stripe 1: Device Start Block Dbase State Reloc Hot Spare c1t3d0s4 0 No Okay Yes Stripe 2: Device Start Block Dbase State Reloc Hot Spare c1t3d0s5 0 No Okay Yes |
For each submirror in the mirror, the metastat command shows the status, an “invoke” line if there is an error, the assigned hot spare pool (if any), the size in blocks, and information about each slice in the submirror.
Check About RAID-1 Volume Options.
Make sure that you have root privilege and that you have a current backup of all data.
Use one of the following methods to change the RAID-1 options.
From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node. Choose the mirror. Then, choose Action⇒Properties. Follow the onscreen instructions. For more information, see the online help.
Use the metaparam command to display and change a mirror's options.
# metaparam [mirror options] mirror |
See About RAID-1 Volume Options for a description of mirror options. Also, see the metaparam(1M) man page.
# metaparam -r geometric d30 # metaparam d30 d30: mirror current parameters are: Pass: 1 Read option: geometric (-g) Write option: parallel (default) |
In this example, the -r option changes a mirror's read policy to geometric.
# metaparam -w serial d40 # metaparam d40 d40: mirror current parameters are: Pass: 1 Read option: roundrobin (default) Write option: serial (-S) |
In this example, the -w option changes a mirror's write policy to serial.
# metaparam -p 5 d50 # metaparam d50 d50: mirror current parameters are: Pass: 5 Read option: roundrobin (default) Write option: parallel (default) |
In this example, the -p option changes a mirror's pass number to 5.
Read Creating and Maintaining RAID-1 Volumes.
Make sure that you have root privilege and that you have a current backup of all data.
Use one of the following methods to expand a mirror.
From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node. Choose the mirror. Then, choose Action->Properties and click the Submirror tab. Follow the onscreen instructions. For more information, see the online help.
Use the metattach command to attach additional slices to each submirror.
# metattach submirror slice |
Each submirror in a mirror must be expanded. See the metattach(1M) man page for more information.
Use the metattach command to cause the mirror to recompute its size based on the size of the submirror.
# metattach mirror |
# metastat d8: Mirror Submirror 0: d9 State: Okay Submirror 1: d10 State: Okay ... # metattach d9 c0t2d0s5 d9: component is attached # metattach d10 c0t3d0s5 d10: component is attached # metattach d8 |
This example shows how to expand a mirrored, mounted file system by concatenating two disk drives to the mirror's two submirrors. The mirror is named d8 and contains two submirrors named d9 and d10.
For a UFS, run the growfs(1M) command on the mirror volume. See How to Expand a File System.
An application, such as a database, that uses the raw volume must have its own way of expanding the added storage.
Assume the Primary Administrator role, or become superuser.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, Working With the Solaris Management Console (Tasks), in System Administration Guide: Basic Administration.
Use the metastat command to view the status of the RAID-1 volume and associated submirrors.
# metastat mirror-name |
or
metastat -a |
Use the metasync -c volume command to cancel the resynchronization process.
The following example illustrates how to cancel the resynchronization process on a volume that is part of the disk set blue. Notice that the submirrors are in the “Resync cancelled” state after running the metasync command.
# metastat -a blue/d10: Mirror Submirror 0: blue/d1 State: Resyncing Submirror 1: blue/d2 State: Okay Resync in progress: 0 % done Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 10485760 blocks (5.0 GB) blue/d1: Submirror of blue/d10 State: Resyncing Size: 10485760 blocks (5.0 GB) Stripe 0: Device Start Block Dbase State Reloc Hot Spare /dev/dsk/c3t50020F230000FA57d0s0 0 No Okay Yes blue/d2: Submirror of blue/d10 State: Okay Size: 10485760 blocks (5.0 GB) Stripe 0: Device Start Block Dbase State Reloc Hot Spare /dev/dsk/c3t50020F230000FA57d0s1 0 No Okay Yes Device Relocation Information: Device Reloc Device ID /dev/dsk/c3t50020F230000FA57d0 Yes id1,ssd@n60020f200000fa574033661f000c641 4 # metasync -s blue -c d10 Mar 1 12:46:18 SunSystem1 md_mirror: WARNING: md: blue/d10: Resync cancelled # metastat -a blue/d10: Mirror Submirror 0: blue/d1 State: Resync cancelled Submirror 1: blue/d2 State: Okay Resync cancelled: 3 % done Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 10485760 blocks (5.0 GB) blue/d1: Submirror of blue/d10 State: Resync cancelled Invoke: metasync blue/d10 Size: 10485760 blocks (5.0 GB) Stripe 0: Device Start Block Dbase State Reloc Hot Spare /dev/dsk/c3t50020F230000FA57d0s0 0 No Okay Yes blue/d2: Submirror of blue/d10 State: Okay Size: 10485760 blocks (5.0 GB) Stripe 0: Device Start Block Dbase State Reloc Hot Spare /dev/dsk/c3t50020F230000FA57d0s1 0 No Okay Yes Device Relocation Information: Device Reloc Device ID /dev/dsk/c3t50020F230000FA57d0 Yes id1,ssd@n60020f200000fa574033661f000c641 4 |
Assume the Primary Administrator role, or become superuser.
The Primary Administrator role includes the Primary Administrator profile. To create the role and assign the role to a user, see Chapter 2, Working With the Solaris Management Console (Tasks), in System Administration Guide: Basic Administration.
Use the metastat command to view the status of the RAID-1 volume and associated submirrors.
# metastat mirror-name |
or
metastat -a |
Use the metasync volume command to resume the resynchronization process.
# metasync volume |
The following example illustrates how to resume the resynchronization process on a volume that is part of the disk set blue. Notice that the submirrors are in the “Resync cancelled” state before running the metasync command. Once the metasync command is issued, the resynchronization process resumes.
# metastat -a blue/d10: Mirror Submirror 0: blue/d1 State: Resync cancelled Submirror 1: blue/d2 State: Okay Resync cancelled: 3 % done Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 10485760 blocks (5.0 GB) blue/d1: Submirror of blue/d10 State: Resync cancelled Invoke: metasync blue/d10 Size: 10485760 blocks (5.0 GB) Stripe 0: Device Start Block Dbase State Reloc Hot Spare /dev/dsk/c3t50020F230000FA57d0s0 0 No Okay Yes blue/d2: Submirror of blue/d10 State: Okay Size: 10485760 blocks (5.0 GB) Stripe 0: Device Start Block Dbase State Reloc Hot Spare /dev/dsk/c3t50020F230000FA57d0s1 0 No Okay Yes Device Relocation Information: Device Reloc Device ID /dev/dsk/c3t50020F230000FA57d0 Yes id1,ssd@n60020f200000fa574033661f000c641 4 # metasync -s blue d10 # metastat -a blue/d10: Mirror Submirror 0: blue/d1 State: Resyncing Submirror 1: blue/d2 State: Okay Resync in progress: 3 % done Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 10485760 blocks (5.0 GB) blue/d1: Submirror of blue/d10 State: Resyncing Size: 10485760 blocks (5.0 GB) Stripe 0: Device Start Block Dbase State Reloc Hot Spare /dev/dsk/c3t50020F230000FA57d0s0 0 No Okay Yes blue/d2: Submirror of blue/d10 State: Okay Size: 10485760 blocks (5.0 GB) Stripe 0: Device Start Block Dbase State Reloc Hot Spare /dev/dsk/c3t50020F230000FA57d0s1 0 No Okay Yes Device Relocation Information: Device Reloc Device ID /dev/dsk/c3t50020F230000FA57d0 Yes id1,ssd@n60020f200000fa574033661f000c641 4 |