Can /usr and /var be copied to another machine? Post: 302531025

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Operating Systems Solaris Can /usr and /var be copied to another machine? Post 302531025 by methyl on Wednesday 15th of June 2011 04:22:13 PM

06-15-2011

Registered User

This is getting hard to follow because each question is a new post.

It all seems to derive from the same initial problem. It might be a good idea to make a consolidated post giving the full history (including commands typed) and mentioning the filesystem types and the contents of /etc/fstab .

Anyway, I cannot advise in detail (but those on the Solaris board or Sun Support can).

One idea.
When I was in a similar situation on an old Solaris server the Sun support guy talked me through the following:

1) Boot the broken server from release media DVD.
2) Mount relevant local filesystems on temporary mountpoints.
3) Set up NFS mounts from broken server to good server to make filesystems from the good system available to the broken system.
The generic kernel included NFS (this is the bit I'm not sure about for Solaris 9).
4) Copy enough from the good server to the bad server to get the broken system running. Pay particular attention to /etc/fstab and at all times know what the root password is.
Either copy from NFS map to the good server hard discs or from NFS map to backup device.
5) Boot the newly repaired server and restore remaining detail from backup.

The only rider was that my backup was a bog-standard unix backup (not tar).
If however your original restore error only overwrote those files which were on a tar backup I would not expect it to overwrite device special files. A tar backup is not suitable for backing up system partitions.

Note: I didn't overwrite /etc/passwd /etc/shadow or /etc/group but chose to repair them having restored the originals to temporary space. Use "vipw" to repair a password file, "vi" to repair /etc/shadow and "pwconv" to sync passwd and shadow. Use "vi" for /etc/group . Run "pwck" and "grpck" before trying to boot.

Ps: 99% of all Systems Administrators would do a cold build and then restore the custom bit from backup.

Last edited by methyl; 06-15-2011 at 05:28 PM..

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LEARN ABOUT OPENSOLARIS

ndmp

ndmp(4) 							   File Formats 							   ndmp(4)

NAME

       ndmp - configuration properties for Solaris Network Data Management Protocol (NDMP) server

DESCRIPTION

       The behavior of the Solaris NDMP server is specified by property values that are stored in the Service Management Facility, smf(5).

       An authorized user can use the ndmpadm(1M) command to set global values for these properties in SMF.

       You can set the following properties by using the ndmpadm set command:

       backup-quarantine       Backup the files marked as quarantined by AV. Acceptable values are yes or no. The default is no.

       dar-support	       Set the Direct Access Recovery mode. Acceptable values are yes or no. The default is no.

       debug-level	       Set the debug level. The debug-level can be set to either 0 (off) or 1 (on). The default is 0.

       debug-path	       The path to which to save the debug log. The default is /var/ndmp.

       dump-pathnode	       Enable  or  disable  backing  up the directories containing modified files or directories in dump(1) backup format.
			       Acceptable values are yes or no. The default is no.

       ignore-ctime	       Determines whether the change timestamp (ctime) of files and directories is used to determine whether a file should
			       be  backed  up  in level backup. If this parameter is set to yes, only the modification time (mtime) of the file or
			       directory determines whether it should be backed up. Acceptable values are yes or no. The default value is no.

       overwrite-quarantine    Restore quarantined files on top of current files if they already exist. Acceptable  values  are  yes  or  no.  The
			       default value is no.

       restore-quarantine      Restore the files that had been marked as quarantined by AV and are backed up. Acceptable values are yes or no. The
			       default value is no.

       tar-pathnode	       Enable or disable backing up the directories containing modified files or  directories  in  tar(1)  backup  format.
			       Acceptable values are yes or no. The default value is no.

       token-maxseq	       Set  the  maximum sequence number for subsequent token-based incremental backup in NDMP-V4. The default value is 9.
			       There are two limits for this value: soft-limit, which is 59, and hard-limit, equal to 64. If  the  token  sequence
			       number,	passed	by the DMA, is between the soft and hard limits, a warning message is issued to the DMA. The token
			       sequence number can never exceed the hard-limit value.

       version		       Set the maximum active NDMP protocol version. Valid values are currently 2, 3, and 4. The default is 4.

       The following property can only be set when using the ndmpadm enable or ndmpadm disable command:

       auth-type    Sets the password encryption type for the authentication of local users. Valid values are cram-md5 or cleartext.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWndmpu, SUNWndmpr	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       dump(1), tar(1), ndmpadm(1M), ndmpd(1M), attributes(5), smf(5)

SunOS 5.11							    3 Mar 2009								   ndmp(4)

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