From: M.Russell@iaea.org
Date: Thu May 27 2004 - 02:39:16 EDT
I inherited responsibility for a SUNBlade100 with Solaris 8 OS about a year
ago. Someone had already set up mirroring for the / (d0), /var (d4), and
/export (d7) filesystems and, additionally, had created names for the two
large disks (d8 & d9, each RAID 1), but instead of making two sub-mirrors
for each of these, each has only one sub-mirror (d18 & d19, each RAID 0)
that is basically the size of the entire disk.
In the course of adding a new PCI SCSI card and disk pack to our system, I
set up the two new disks in the same manner as d8 and d9, and noticed that
d8 is showing Needs Maintenance and d18 is showing Last Erred.
This morning I took the system down to single user mode, unmounted d8 and
did an fsck. There were no errors. Then I ran metastat again and the
status was still the same. Then I tried
metareplace -e d8 /dev/dsk/c1t1d0s7
and got the error: attempt to replace a component on the last running
submirror
So I have a lot of questions (if you can answer even one of these, I would
be most grateful!):
1. Is the setup of the disks with only one sub-mirror component okay with
the top level being RAID 1 and the one sub-component RAID 0?
2. Since the two new disks have exactly the same configuration as the one
with the errors, could I set up a second sub-mirror temporarily that is one
of the new disks and somehow make it a mirror of d8 while I fix d8 somehow?
3. How do I fix d8 (this is like our main applications system disk and we
need it!) ?
4. Why doesn't fsck find any problems with it?
5. Is this like a critical situation that needs to be remedied asap? It
could be that the system has been in the state for some time (like weeks or
even months), because I didn't know that it was something I should be
looking at on a regular basis until now.
Thanks in advance for any help, advice, info you have time to provide!
Marian Russell
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