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Full Discussion: increasing ufs file system size in solaris
Top Forums UNIX for Dummies Questions & Answers increasing ufs file system size in solaris Post 91203 by Just Ice on Wednesday 30th of November 2005 12:25:19 PM
Old 11-30-2005
Code:
if the 2nd drive is empty or reconfigurable --- 

1. partition the 2nd drive into the setup you want to be the final layout

2. newfs all the new data partitions on the 2nd drive

3. copy all the data over from the 1st drive to it's new home on the 2nd drive


if you plan on booting up the 2nd drive as another boot device ---

1. install boot block on / partition of 2nd drive

2. edit /etc/vfstab on 2nd drive to reflect correct disk devices for mounting


if you plan on physically swapping drives ---

1. install boot block on / partition of 2nd drive

2. power off system, swap drives in slot0 and slot1, and boot

... for your first time doing this, i suggest you try to boot the 2nd drive as an alternate boot device as failure of that drive to boot means you missed a step and swapping drives will not make it work any better ...

anyways, i've found through the years that having the / filesystem include everything gave me much more flexibility than breaking out some of it's components --- i.e., the unused spaces in /home, /usr and /var are easily reclaimed if i need more space in /, i can create as many directories as i want without resorting to creative symlinks all over the place, etc. ...

however, there are times i'd at least want some of the sub-directories broken off --- i.e., /var should be it's own filesystem if there is a massive amount of system log activity or if the server is a mail server, /home should be it's own filesystem if you want to contain and enforce quotas on user data, etc.

you need to figure out how you folks want to support the server and how the server is going to be used in the long term so you'll know your better if you want to split out sub-directories into their own filesystems ...

for pointers on intra-disk copies see this script
 

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LEARN ABOUT NETBSD

resize_lfs

RESIZE_LFS(8)						    BSD System Manager's Manual 					     RESIZE_LFS(8)

NAME

     resize_lfs -- resize a mounted log-structured filesystem

SYNOPSIS

     resize_lfs [-v] [-s new-size] mounted-file-system

DESCRIPTION

     resize_lfs grows or shrinks a mounted log-structured filesystem to the specified size.  mounted-file-system is the name of the filesystem to
     be resized, and new-size is the desired new filesystem size, in sectors.  If new-size is not specified, resize_lfs will default to the cur-
     rent size of the partition containing the filesystem in question.

     When growing, the partition must be large enough to contain a filesystem of the specified size; when shrinking, resize_lfs must first
     ``clean'' the segments that will be invalid when the filesystem is shrunk.  If this cleaning process results in these segments becoming
     redirtied, this indicates that the given new size is not large enough to contain the existing filesystem data, and resize_lfs will return an
     error.

EXAMPLES

     To resize the file system mounted at /home to 32576 sectors:
	   resize_lfs -s 32576 /home

SEE ALSO

     fsck_lfs(8), lfs_cleanerd(8), newfs_lfs(8)

HISTORY

     The resize_lfs command first appeared in NetBSD 3.0.

AUTHORS

     Konrad Schroder <perseant@NetBSD.org>

BUGS

     resize_lfs should be able to resize an unmounted filesystem as well.

BSD
								 September 4, 2006							       BSD
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