9 More Discussions You Might Find Interesting
1. AIX
Hello!
I have a LPAR with 51GB RAM
topas shows 21% of memory for client pages (~11Gb)
svmon -G show 2906772 client pages in use (~11Gb)
but then i try to investigate per process client memory usage
svmon -P -O filtertype=client
and summarize inuse column, i get only 347880 pages... (1 Reply)
Discussion started by: sys
1 Replies
2. AIX
how to change the filesystem from jfs to jfs2 in ibm aix6.1
please tell me command for that.
thank you,
paandu (2 Replies)
Discussion started by: paandur
2 Replies
3. AIX
Hi all,
Can anyone define the difference between jfs and jfs2 filesystem as well as usage of jfs log files....
Thanks.... (7 Replies)
Discussion started by: sumathi.k
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4. AIX
Hello all,
I'm trying to grow a file system by 500MB using SMIT on AIX 5.2 but I receive this error:
"0516-404 allocp: This system cannot fulfill the allocation request.
There are not enough free partitions or not enough physical volumes
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5. AIX
Hi,
is anyone aware about filesystem size restrictions on AIX? And does anyone know a solution for below problem?
I have 2 boxes attached to EMC Raid5 storage, both have huge /optware/oracle/oradata filesystems - 4.5 and 2.5 TB in size, nothing is striped or in any other way restricted. Due to... (11 Replies)
Discussion started by: zxmaus
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6. AIX
Hi All,
I can't create a FS from a SAN VG with size of 160G on JFS (NOT JFS2, requirement with application) with large file enabled.
It only let me create 64G in maximum size. The actual size of SAN VG is also 160G, the FS can be smaller than 160G because of the inode allocation.
Please... (1 Reply)
Discussion started by: itik
1 Replies
7. AIX
Hi,
I am getting an error message when i try to increase the size of a filesystems
under AIX 4.3.3:
chfs: 0506-932 Can not extend a JFS file system with nbpi = 4096
and frag = 4096 past 134217728 (512 byte blocks).
-> Characteristics Journaled File System
... (4 Replies)
Discussion started by: Can
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8. UNIX for Dummies Questions & Answers
Need help,
I have read the docs but need some better understanding.
Can someone explain the reasons behind setting the values for
fragement size, i-node and allocation group size?
Thanks, (6 Replies)
Discussion started by: kburrows
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9. UNIX for Advanced & Expert Users
Hi there,
Can anyone tell me the advantages that jfs has over Veritas (if any)??
Cheers. (5 Replies)
Discussion started by: rich
5 Replies
jfs_tune(8) Set JFS file system parameters. jfs_tune(8)
NAME
jfs_tune - adjust tunable file system parameters on JFS
SYNOPSIS
jfs_tune [options] device
DESCRIPTION
jfs_tune adjusts tunable parameters on a Linux JFS file system or external journal. jfs_tune must be run as root.
device is the special file name corresponding to the actual device (e.g. /dev/hdb1) on which a JFS file system or JFS external journal has
been created.
OPTIONS
-J device=external-journal
Only supported on JFS versions (1.0.18 or later) that support external journal. Attach the JFS external journal located on exter-
nal-journal to the JFS file system on device.
Currently, you may only attach a single JFS file system device to a single JFS external journal (i.e. each JFS file system using an
external journal must have a unique external journal).
The external journal must already have been created using the command
mkfs.jfs -J journal_dev external-journal
Attach the external journal to the file system by using the command
jfs_tune -J device=external-journal device
Instead of specifying a device name directly, external-journal can also be specified by either LABEL=label or UUID=UUID (Use
jfs_tune -l device to display a journal device's volume label and UUID.)
-l List the contents of the JFS file system or external journal superblock that resides on device.
-L volume-label
Set the volume label of the JFS file system or external journal. JFS labels can be at most 16 characters long; if volume-label is
longer than 16 characters, jfs_tune will truncate it and print a warning. The volume label can be used by mount(8), fsck(8), and
/etc/fstab(5) (and possibly others) by specifying LABEL=volume_label instead of a block special device name like /dev/hda5.
-U UUID
Set the universally unique identifier (UUID) of the file system or external journal device to UUID. The format of the UUID is a
series of hex digits separated by hyphens, like this: "c1b9d5a2-f162-11cf-9ece-0020afc76f16". The UUID parameter may also be one of
the following:
clear clear the file system UUID
random generate a new randomly-generated UUID
time generate a new time-based UUID
The UUID may be used by mount(8), fsck(8), and /etc/fstab(5) (and possibly others) by specifying UUID=uuid instead of a block spe-
cial device name like /dev/hda1.
See uuidgen(8) for more information.
-V Print version information and exit (regardless of any other chosen options).
EXAMPLES
Set a randomly-generated UUID for the JFS file system on the 3rd partition of the 2nd hard disk, and view the resultant superblock:
jfs_tune -l -U random /dev/hdb3
Attach an already existing external journal on a device labeled JFSLog to a JFS file system on /dev/hda8:
jfs_tune -J device=LABEL=JFSLog /dev/hda8
REPORTING BUGS
If you find a bug in JFS or jfs_tune, please report it via the bug tracking system ("Report Bugs" section) of the JFS project web site:
http://jfs.sourceforge.net/
Please send as much pertinent information as possible including any error messages resulting from running jfs_tune.
SEE ALSO
jfs_fsck(8), jfs_mkfs(8), jfs_fscklog(8), jfs_logdump(8), jfs_debugfs(8)
AUTHOR
Barry Arndt (barndt@us.ibm.com)
jfs_tune is maintained by IBM.
See the JFS project web site for more details:
http://jfs.sourceforge.net/
October 28, 2002 jfs_tune(8)