Recover failed system disk Post: 302966391

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Operating Systems Solaris Recover failed system disk Post 302966391 by jj5406 on Thursday 11th of February 2016 03:29:30 PM

02-11-2016

Registered User

So far so good.

I knew the configuration of all of the disks from the raid controller setup screen (ctrl-a when booting). I had already removed the failed disk in order to put in a fresh one on which to put a new system (no free slots).

The raid controller must be smart enough because everything worked smoothly. I shut down the computer and pulled a known single-volume disk with not too much data on it (for which I had a complete backup as well) and inserted the failed disk into that slot. On boot, the controller detected the change and made a new configuration and came up just fine. I was able to mount the bad disk and copy everything off of it except for the contents of /usr/lib. This should effectively get me everything (config files, etc.) that I need to rebuild the system the way it was before. I copied the files off of the bad disk by rsyncing what I thought were the most important directories first (in case something bad should happen). After turning the computer off, re-inserting the disk that I had swapped out, and turning it back on again - the raid controller once again detected the change, did a reconfiguration and now everything looks as it did earlier today. I can see and mount all of the disks and access their data - except that now I also have a copy of everything that was on the old system disk (except for /usr/lib) from which I can (hopefully) get the system back into its pre-crash state.

Thanks.

-J

---------- Post updated at 01:57 PM ---------- Previous update was at 12:57 PM ----------

Apparently, I foolishly chose the default disk partitioning when installing the new system. Now / (slice 0) has very little space on it (6.4 GB), while the rest of the space on the disk (124 GB) is mounted as /export/home (slice 7).

So far, I've only made a few minor changes to /, and none to /export/home.
Is there any way to repartition the disk so that the whole thing is allocated to / in slice 0, or will I have to reinstall the system (again)?

User home directories are all on a separate disk anyway.

Thanks.

-J

---------- Post updated at 03:29 PM ---------- Previous update was at 01:57 PM ----------

FYI to anyone who might read this thread in the future:

I was actually able to increase the size of partition 0 to the full disk (except for the swap and boot sectors) by basically following the instructions at https://blogs.oracle.com/michel/entr...aris_partition (modified for my purposes) and running growfs. And it didn't even bork my system! I was prepared to have to reinstall Solaris.

However, I didn't think to first remove the line from my vsftab which attempts to mount the partition that I removed. This caused problems on boot and ended up requiring another reboot.

The system is probably not properly tuned. Of course, now that I have done it, it occurs to me that maybe swap should be much larger. This is what happens when you only do system management occasionally.

-J

jj5406

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LEARN ABOUT PLAN9

home

HOME(8) 						      System Manager's Manual							   HOME(8)

NAME

       home, 40meg, 80meg, personalize, update, Disclabel - administration for local file systems

SYNOPSIS

       gnot/home
       gnot/personalize
       gnot/update

       magnum/home
       magnum/personalize
       magnum/update

       pc/40meg
       pc/80meg
       pc/personalize
       pc/update

       nextstation/home
       nextstation/update

DESCRIPTION

       These programs help maintain a file system on a local disk for a private machine.

       Home  partitions a disk, copies the appropriate kernel to the disk, and makes a new file system on the disk.  To do this, it overwrites the
       vendor-supplied software on the disk with a copy of Plan 9.  40meg, 80meg, and 100meg configure disks and make file systems  for  disks	of
       the appropriate size.

       Update copies the current kernel to the disk and updates files on the local file system.  It only updates those files put there by the home
       program.

       Personalize removes the contents of the /usr directory on the local disk and copies a minimal set of files for the user who runs  the  com-
       mand.

       The  file  /rc/bin/nextstation/Disclabel,  despite  its	name,  is not an rc(1) script.	It contains the second stage bootstrap program for
       Nextstations booting from local disk.  Before  booting  a  Plan	9  Nextstation	from  disk,  it  should  be  installed	in  the  partition
       /dev/hd1label; this is normally done by nexstation/home.

FILES

       /lib/proto/portproto
	      Mkfs prototype files for magnum/home, magnum/update, gnot/home, and gnot/update.

       /lib/proto/386proto
	      Mkfs prototype files for pc/40meg, pc/80meg, and pc/update.

SOURCE

       /rc/bin/gnot/*
       /rc/bin/magnum/*
       /rc/bin/pc/*
       /rc/bin/nextstation/*

SEE ALSO

       kfs(4), mkfs(8), prep(8), wren(3)
       ``Installing the Plan 9 Distribution''.

																	   HOME(8)