Solaris 10 System Administration Part I - Revision history

Paul: /* fstyp command */

2011-10-05T21:34:14Z

fstyp command

← Older revision		Revision as of 16:34, 5 October 2011
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	#</pre>		#</pre>

			changing minimum free size

			<pre># tunefs -m 1 /dev/rdsk/c1t3d0s0
			minimum percentage of free space changes from 2% to 1%
			# fstyp -v /dev/dsk/c1t3d0s0 \| grep minfree
			minfree 1% maxbpg 2048 optim time
			#</pre>

			=== x ===

	<center>[[Solaris\|To Solaris]]</center>		<center>[[Solaris\|To Solaris]]</center>

Paul: /* using new ufs command */

2011-10-05T21:25:33Z

using new ufs command

← Older revision		Revision as of 16:25, 5 October 2011
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	repeat process for each partition and slice that needs a new file system		repeat process for each partition and slice that needs a new file system

			==== reserve free space =====

			<pre># newfs -m 2 /dev/dsk/c1t3d0s0
			newfs: construct a new file system /dev/rdsk/c1t3d0s0: (y/n)? y
			Warning: 2880 sector(s) in last cylinder unallocated
			/dev/rdsk/c1t3d0s0: 20972736 sectors in 3414 cylinders of 48 tracks, 128 sectors
			10240.6MB in 214 cyl groups (16 c/g, 48.00MB/g, 5824 i/g)
			super-block backups (for fsck -F ufs -o b=#) at:
			32, 98464, 196896, 295328, 393760, 492192, 590624, 689056, 787488, 885920,
			20055584, 20154016, 20252448, 20350880, 20449312, 20547744, 20646176,
			20744608, 20843040, 20941472</pre>

			==== fstyp command ====

			show minimum free size with fstyp & -v option

			<pre># fstyp -v /dev/dsk/c1t3d0s0 \| grep minfree
			minfree 2% maxbpg 2048 optim time
			# fstyp -v /dev/rdsk/c1t3d0s0 \| head
			ufs
			magic 11954 format dynamic time Wed Oct 5 15:57:18 2011
			sblkno 16 cblkno 24 iblkno 32 dblkno 760
			sbsize 2048 cgsize 8192 cgoffset 64 cgmask 0xffffffc0
			ncg 214 size 10486368 blocks 10327132
			bsize 8192 shift 13 mask 0xffffe000
			fsize 1024 shift 10 mask 0xfffffc00
			frag 8 shift 3 fsbtodb 1
			minfree 2% maxbpg 2048 optim time
			maxcontig 128 rotdelay 0ms rps 167
			#</pre>

			show minimum free size with fstyp & -v option

			<pre># fstyp -v /dev/rdsk/c1t3d0s0 \| head
			ufs
			magic 11954 format dynamic time Wed Oct 5 15:57:18 2011
			sblkno 16 cblkno 24 iblkno 32 dblkno 760
			sbsize 2048 cgsize 8192 cgoffset 64 cgmask 0xffffffc0
			ncg 214 size 10486368 blocks 10327132
			bsize 8192 shift 13 mask 0xffffe000
			fsize 1024 shift 10 mask 0xfffffc00
			frag 8 shift 3 fsbtodb 1
			minfree 2% maxbpg 2048 optim time
			maxcontig 128 rotdelay 0ms rps 167
			#</pre>


	<center>[[Solaris\|To Solaris]]</center>		<center>[[Solaris\|To Solaris]]</center>

Paul at 18:36, 5 October 2011

2011-10-05T18:36:48Z

Show changes

Paul at 18:32, 5 October 2011

2011-10-05T18:32:31Z

Show changes

Paul: /* direct pointers */

2011-09-23T15:14:44Z

direct pointers

← Older revision		Revision as of 10:14, 23 September 2011
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	==== direct pointers ====		==== direct pointers ====

	~~p215~~		inside inode there are 12 direct pointers, which contain addresses for the file's first 12 data blocks. the 12 direct pointers can each reference 8-Kbye data blocks for a file that is up to 96Kbytes

			==== indirect pointers ====


	<center>[[Solaris\|To Solaris]]</center>		<center>[[Solaris\|To Solaris]]</center>

Paul: /* partition tables & reserved space */

2011-09-22T23:50:59Z

partition tables & reserved space

@@ Line 1,730: / Line 1,730: @@
 === partition tables & reserved space ===
-to create ufs slices must be defined on a disk
+to create ufs in Solaris system space must be available on disk & that space must be defined in a partition
 <center>[[Solaris|To Solaris]]</center>

Paul: /* Creating new ufs file system */

2011-09-22T23:14:06Z

Creating new ufs file system

← Older revision		Revision as of 18:14, 22 September 2011
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	=== Creating new ufs file system ===		=== Creating new ufs file system ===

			user views ufs differently than Solaris OS. user views file system as collection of files & directories, to Solaris OS the file system appears as a collection of control structures & data blocks that occupy space defined by a partition

			Solaris OS stores data in a logical file hierarchy often consisting of several file systems, file hierarchy is referred to as Solaris directory hierarchy

			The ufs file system must be created on disk before being used by Solaris OS

			Solaris systems typically use multiple ufs file systems to store directories & files

			Example:
			* using mount -p command shows the root (/) & /var directories as ufs & / directory on c0t0d0s0 & /var directory on c0t0d0s5.

			<pre># mount -p \| grep ufs
			/dev/dsk/c0t0d0s0 - / ufs - no rw,intr,largefiles,logging,xattr,onerror=panic
			/dev/dsk/c0t0d0s5 - /var ufs - no rw,intr,largefiles,logging,xattr,onerror=panic
			#</pre>

			'''utilize the format utility to view partition tables:'''
			<pre>Part Tag Flag Cylinders Size Blocks
			0 root wm 1719 - 11168 10.74GB (9450/0/0) 22528800
			1 swap wu 0 - 1718 1.95GB (1719/0/0) 4098096
			2 backup wm 0 - 65532 74.50GB (65533/0/0) 156230672
			3 unassigned wm 0 0 (0/0/0) 0
			4 unassigned wm 0 0 (0/0/0) 0
			5 var wm 11169 - 16323 5.86GB (5155/0/0) 12289520
			6 unassigned wm 0 0 (0/0/0) 0
			7 unassigned wm 0 0 (0/0/0) 0
			</pre>

			=== partition tables & reserved space ===

			to create ufs slices must be defined on a disk



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Paul: /* Managing Solaris OS Unix File System (UFS) */

2011-09-22T21:26:05Z

Managing Solaris OS Unix File System (UFS)

← Older revision		Revision as of 16:26, 22 September 2011
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	== Managing Solaris OS Unix File System (UFS) ==		== Managing Solaris OS Unix File System (UFS) ==

			=== Solaris OS file systems ===

			file system is a collection of files & directories that make up a structured set of info

			Solaris OS supports three different types of file systems:
			* disk-based file systems
			* distributed file systems
			* pseudo file systems

			=== disk-based file systems ===

			disk-based file systems are found on hard disks, CD-ROMS, diskettes, DVDs, Blue-Rays

			Some examples of disk-based file systems:
			* usf - [http://en.wikipedia.org/wiki/Unix_File_System Unix File System]
			* hsfs - [http://en.wikipedia.org/wiki/High_Sierra_Format High Sierra Format]
			* pcfs - [http://en.wikipedia.org/wiki/PCFS PC File System]
			* udfs - [http://en.wikipedia.org/wiki/Universal_Disk_Format Universal Disk Format]
			* ZFS - [http://en.wikipedia.org/wiki/ZFS Zettabyte File System]

			=== Distributed File Systems ===

			distributed file systems provide network access to file system resources

			* NFS - [http://en.wikipedia.org/wiki/Network_File_System_%28protocol%29 Network File System]

			=== Pseudo File Systems ===

			pseudo file systems are memory based

			Some examples of pseudo file systems:
			* tmpfs - [http://en.wikipedia.org/wiki/Tmpfs Temporary File System]
			* swapfs - swap file system is used by kernel to manage [http://en.wikipedia.org/wiki/Swap_space swap space] on disks
			* fdfs - file descriptor file system provides explicit names for opening files by using [http://en.wikipedia.org/wiki/File_descriptor file descriptors] in /dev/fd directory
			* procfs - [http://en.wikipedia.org/wiki/Procfs process file system] contains list of active processes from /proc directory, ps command uses information from /proc
			* lofs - [http://en.wikipedia.org/wiki/Loop_device loopback file system] provides access to existing files using alternate pathnames
			* mntfs - mount file system provides read-only info from the kernel about locally mounted file systems
			* objfs - kernel object file system, used by kernel to store details relating to modules currently loaded by kernel, used for the /system/object directory
			* devfs - [http://en.wikipedia.org/wiki/Devfs#devfs device file system] is used to manage the namespace of all devices on system, file system is used for the /devices directory
			* ctfs - contract file system is associated with /system/contract directory. Used by Service Management Facility (SMF) to track the processes which compose a service

			mount command with -p or -v options displays file system types currently in use


			=== Creating new ufs file system ===



	<center>[[Solaris\|To Solaris]]</center>		<center>[[Solaris\|To Solaris]]</center>

Paul: /* /etc/inet/hosts */

2011-09-22T20:37:16Z

/etc/inet/hosts

← Older revision		Revision as of 15:37, 22 September 2011
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	==== /etc/inet/hosts ====		==== /etc/inet/hosts ====

			* host names are text strings up to 24 characters
			* alphabetic characters, numbers, hyphen, period are allowed in host name
			* periods are allowed only to delimit components of domain style names
			* first character must be alphabetic character
			* last character cannot be hyphen or period
			* not case sensitive (unless NIS naming service is used, uppercase characters in names have been known to cause problems with NIS)
			* A hash (#) indicates the beginning of a command

			=== sys-unconfig command ===

			use sys-unconfig command to undo a system configuration & restore to unconfigured state so you can reconfigure

			sys-unconfig commands does:
			* save /etc/inet/hosts file to /etc/inet/hosts.saved
			* if /etc/vfstab file contains NFS mount entries file is saved to /etc/vfstab.orig file
			* restores default /etc/inet/hosts file
			* removes default host name in /etc/hostname.xxn file for all configured interfaces
			* removes default domain name in /etc/defaultdomain file
			* removes the time zone to PST8PDT in /etc/TIMEZONE file
			* resets naming services to local files
			* removes the /etc/inet/netmasks file
			* remotes the /etc/defaultrouter file
			* removes password set for root user in /etc/shadow file
			* removes /etc/.rootkey file for NIS+
			* executes all system configuration applications (applications are defined by prior use of sysidconfig -a command)
			* removes /etc/resolv.conf file for DNS clients
			* disables LDAP by removing:
			** /var/ldap/ldap_client_cache file
			** /var/ldap/ldap_client_file file
			** /var/ldap/ldap_client_cred file
			** /var/ldap/cachemgr.log file
			* regenerate keys for sshd

			when sys-unconfig command is finish the system is shutdown

			can only be run as root user

			when system is powered on a configuration script prompts you to configure system info

			sys-unconfig command is not available on diskless client

			== Managing Solaris OS Unix File System (UFS) ==








	<center>[[Solaris\|To Solaris]]</center>		<center>[[Solaris\|To Solaris]]</center>

Paul: /* = /etc/hostname.xxn file */

2011-09-22T20:14:35Z

= /etc/hostname.xxn file

← Older revision		Revision as of 15:14, 22 September 2011
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	#</pre>		#</pre>

	==== /etc/hostname.xxn file ===		==== /etc/hostname.xxn file ====

	==== /etc/inet/hosts ====		==== /etc/inet/hosts ====

	<center>[[Solaris\|To Solaris]]</center>		<center>[[Solaris\|To Solaris]]</center>