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| SUN Solaris The Solaris Operating System, usually known simply as Solaris, is a free Unix-based operating system introduced by Sun Microsystems . |
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08-18-2008
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replacing root disk SunFire 280R
Hi,
We had a disk go bad in this SunFire 280R, running Solaris 8 - Generic_117350-46. We replaced the disk and partitioned it. We metadetached all the metadevices but for some reason the new disk is showing up in the metadb as Concat/Stripe and it won't let us re-sync the mirror. We are not Sun DiskSuite experts here and need some help. Here is the full metastat: sl76prd2# metastat d35 d35: Mirror Submirror 0: d15 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 8389656 blocks d15: Submirror of d35 State: Okay Size: 8389656 blocks Stripe 0: Device Start Block Dbase State Hot Spare c1t0d0s5 0 No Okay sl76prd2# metastat d30: Mirror Submirror 0: d10 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 2941002 blocks d10: Submirror of d30 State: Okay Size: 2941002 blocks Stripe 0: Device Start Block Dbase State Hot Spare c1t0d0s0 0 No Okay d31: Mirror Submirror 0: d11 State: Okay Submirror 1: d21 State: Needs maintenance Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 4194828 blocks d11: Submirror of d31 State: Okay Size: 4194828 blocks Stripe 0: Device Start Block Dbase State Hot Spare c1t0d0s1 0 No Okay d21: Submirror of d31 State: Needs maintenance Invoke: metareplace d31 c1t1d0s1 <new device> Size: 4194828 blocks Stripe 0: Device Start Block Dbase State Hot Spare c1t1d0s1 0 No Maintenance d33: Mirror Submirror 0: d13 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 8389656 blocks d13: Submirror of d33 State: Okay Size: 8389656 blocks Stripe 0: Device Start Block Dbase State Hot Spare c1t0d0s3 0 No Okay d34: Mirror Submirror 0: d14 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 8389656 blocks d14: Submirror of d34 State: Okay Size: 8389656 blocks Stripe 0: Device Start Block Dbase State Hot Spare c1t0d0s4 0 No Okay d35: Mirror Submirror 0: d15 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 8389656 blocks d15: Submirror of d35 State: Okay Size: 8389656 blocks Stripe 0: Device Start Block Dbase State Hot Spare c1t0d0s5 0 No Okay d37: Mirror Submirror 0: d17 State: Okay Pass: 1 Read option: roundrobin (default) Write option: parallel (default) Size: 16779312 blocks d17: Submirror of d37 State: Okay Size: 16779312 blocks Stripe 0: Device Start Block Dbase State Hot Spare c1t0d0s7 0 No Okay d23: Concat/Stripe Size: 8389656 blocks Stripe 0: Device Start Block Dbase c1t1d0s3 0 No d24: Concat/Stripe Size: 8389656 blocks Stripe 0: Device Start Block Dbase c1t1d0s4 0 No d25: Concat/Stripe Size: 8389656 blocks Stripe 0: Device Start Block Dbase c1t1d0s5 0 No d27: Concat/Stripe Size: 16779312 blocks Stripe 0: Device Start Block Dbase c1t1d0s7 0 No d38: Concat/Stripe Size: 185006080 blocks Stripe 0: Device Start Block Dbase c3t0d0s0 0 No Stripe 1: Device Start Block Dbase c3t0d0s3 0 No d39: Concat/Stripe Size: 7340032 blocks Stripe 0: Device Start Block Dbase c3t0d0s4 0 No d41: Concat/Stripe Size: 4200448 blocks Stripe 0: Device Start Block Dbase c3t0d0s1 0 No hsp001: is empty Any help appreciated! Thanks, Mike |
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08-18-2008
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This should be pretty simple to sort out but I'm going to have to make a few assumptions as I don't know your metadevice naming standard, you've not posted your md.tab and without CODE tags round the metastat output it's very hard to read. </grumble> Righty, that out of the way, lets take a look at your current status and draw some inferences: I think your current setup is thus: Mirror devices: d37 d35 d34 d33 d31 d30 Each mirror has two submirrors, d1x and d2x. Does that sound correct? Your metadb is on slice 6, correct? It also looks like the disk that died is c1t1d0, correct? If all those assumptions are correct, (if not, stop here and clarify) then the normal course of action is to replace the failed disk, then run metareplace -e <mirror device> c1t1d0s<slice number> for each slice of the new disk. Unfortunately you've already blown away most of your submirrors so we'll need to rebuild - don't worry, that's safe and easy and you won't lose any data  Just a little more tedious.As you've left d31 intact, fix that one by running: Code:
metareplace -e d31 c1t1d0s1 While that rebuilds, we'll check the metadbs out. Run Code:
metadb to list all the copies of the db. Anything with a W by it (probably everything on c1t1d0s6) is buggered. Provided you still have a few good copies of it, remove the faulty versions of the db. Count how many there are on that device, then run: Code:
metadb -d c1t1d0s6 . Then re-add them: Code:
metadb -a -c <number of copies> c1t1d0s6 . Now wait here until d31 has finished synching: Code:
metastat | grep '%' Wait until it stops showing you a % complete. As you've already created all your submirror metadevices, the only thing left to do it attach them - One by one (yes really, anything else is _way_ slower). For each remaining mirror in the list, run: Code:
metattach d3x d2x I don't know what d38 d39 and d41 are for so I'm ignoring them for now
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08-19-2008
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Thanks for the reply. Sorry for not including "CODE tags". The first assumption is correct - each mirror has two submirrors, d1x and d2x. The metadb is on s6. The disk c1t1d0 is the replaced disk. I was trying to execute: Code:
metareplace -e d30 c1t1d0s0 and it kept barfing. When I executed: Code:
metareplace -e d31 c1t1d0s1 It started syncing! Thanks. But the metadb is messed up like you said: Code:
# metadb
flags first blk block count
W p l 16 1034 /dev/dsk/c1t1d0s6
W p l 1050 1034 /dev/dsk/c1t1d0s6
I tried the command: Code:
# metadb -d c1t1d0s6 metadb: sl76prd2: must have at least 2 databases (-f overrides) Suggestions? Thanks, Mike |
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