Recover failed system disk Post: 302966360

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Operating Systems Solaris Recover failed system disk Post 302966360 by hicksd8 on Thursday 11th of February 2016 06:28:10 AM

02-11-2016

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It seems to me that the main thing you need to do is save whatever files you can from the root filesystem that you have no backup of.

You should be able to mount it read-only onto your new O/S (or you could boot into single-user from CD/DVD and mount it under that).

If you have other storage sufficient available you could then attempt to 'dd' the whole raw partition off to a file and/or attempt to find/cpio the whole filesystem off to an archive.

The comments you have already made lead me to assume that you have quite a bit of experience of Solaris so I haven't gone into much detail.

What RAID controller is it? Make/model?

When you say that fsck doesn't straighten out the filesystem what command are you using? If you're using a "-n" flag then it will test the filesystem without correcting anything. I definitely would not use a "-y" flag because the filesystem could be damaged beyond repair before you can stop the operation. I would use neither flag and just see what questions it asks. I would also perhaps use the (often undocumented) flag "-o full" to examine the whole filesystem although this could take a very long time. Again, don't use -y or -n so you can abort if needed.

---------- Post updated at 11:28 AM ---------- Previous update was at 11:26 AM ----------

I guess the main point I'm making is to mount the filesystem read-only and then back it up. If you subsequently lose that filesystem completely, you can get some data back from archive.

hicksd8

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LEARN ABOUT OSF1

install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)