Perhaps the loadfile is not present and the script gets stuck in this segment?
This wait loop will be run until the load file is present, but the load file will never get executed seeing as $i will immediately be incremented once present.
Also, you seem to be using two counters $i and $tableloadcnt. You might want to have a look at that. For instance tableloadcnt never gets initialized...
Dear all
How to write the shell script for the following statement:
(C programming)
for (i=0;i<30;i++) {
if i=1
continue *skip this number
(To do function here....)
...
}
similar statement in while loop....
I wrote the script in sh... (3 Replies)
Sorry for such a dreadful title, but I'm not sure how to be more descriptive. I'm hoping some of the more gurutastic out there can take a look at a solution I came up with to a problem, and advice if there are better ways to have gone about it.
To make a long story short around 20K pieces of... (2 Replies)
I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends.
As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Hi Im running this script, which is supposed to find the max value build some tables and then stop running once all the tables are built. Thing is , it keeps assigning a null value to $h and then $g is null so it keep building tables i.e. testupdateNUL. How can I stop this? Here is what I have:
... (4 Replies)
Hi all
Sorry for the basic question, but i am writing a shell script to get around a slightly flaky binary that ships with one of our servers. This particular utility randomly generates the correct information and could work first time or may work on the 12th or 100th attempt etc !.... (4 Replies)
Hi, I was debating if I should put this in the dummies or scripts section, I apologize in advance if I chose poorly.
Fairly new to Unix and BASH scripting but I thought I made it fairly well given my limited understanding. However, the output indicates that it's looping and I'm ending up with a... (5 Replies)
Hello All,
Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....?
I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping
through a string containing some of these "Illegal Characters". Now... (5 Replies)
Hi,
I want to read file multiple times. Right now i am using while loop but that is not working.
ex.
While read line
do
while read line2
do
echo stmt1
#processing some data based on data.,
done < file2.txt
done < file1.txt # This will have 10... (4 Replies)
I'm taking a unix class and need to countdown to 0 from whatever number the user inputs. I know how to do this with a while or until loop but using the for loop is throwing me off....
I know I can use an if-then statement in my for loop but can I include a while loop in my for loop? (3 Replies)
Discussion started by: xxhieixx
3 Replies
LEARN ABOUT NETBSD
lfs_cleanerd
LFS_CLEANERD(8) BSD System Manager's Manual LFS_CLEANERD(8)NAME
lfs_cleanerd -- garbage collect a log-structured file system
SYNOPSIS
lfs_cleanerd [-bcDdfmqs] [-i segment-number] [-l load-threshhold] [-n number-of-segments] [-r report-frequency] [-t timeout] node
DESCRIPTION
The lfs_cleanerd command starts a daemon process which garbage-collects the log-structured file system residing at the point named by node in
the global file system namespace. This command is normally executed by mount_lfs(8) when the log-structured file system is mounted. The
daemon will exit within a few minutes of when the file system it was cleaning is unmounted.
Garbage collection on a log-structured file system is done by scanning the file system's segments for active, i.e. referenced, data and copy-
ing it to new segments. When all of the active data in a given segment has been copied to a new segment that segment can be marked as empty,
thus reclaiming the space taken by the inactive data which was in it.
The following options are available:
-b Use bytes written, rather than segments read, when determining how many segments to clean at once.
-c Coalescing mode. For each live inode, check to see if it has too many blocks that are not contiguous, and if it does, rewrite it.
After a single pass through the filesystem the cleaner will exit. This option has been reported to corrupt file data; do not use it.
-D Stay in the foreground, do not become a daemon process. Does not print additional debugging information (in contrast to -d).
-d Run in debug mode. Do not become a daemon process, and print debugging information. More -d s give more detailed debugging informa-
tion.
-f Use filesystem idle time as the criterion for aggressive cleaning, instead of system load.
-i segment-number
Invalidate the segment with segment number segment-number. This option is used by resize_lfs(8), and should not be specified on the
command line.
-l load-threshhold
Clean more aggressively when the system load is below the given threshhold. The default threshhold is 0.2.
-m Does nothing. This option is present for historical compatibility.
-n number-of-segments
Clean this number of segments at a time: that is, pass this many segments' blocks through a single call to lfs_markv, or, if -b was
also given, pass this many segments' worth of blocks through a single call to lfs_markv.
-q Quit after cleaning once.
-r report-frequency
Give an efficiency report after every report-frequency times through the main loop.
-s When cleaning the file system, send only a few blocks through lfs_markv at a time. Don't use this option.
-t timeout
Poll the filesystem every timeout seconds, looking for opportunities to clean. The default is 300, that is, five minutes. Note that
lfs_cleanerd will be automatically awakened when the filesystem is active, so it is not usually necessary to set timeout to a low
value.
SEE ALSO lfs_bmapv(2), lfs_markv(2), lfs_segwait(2), mount_lfs(8)HISTORY
The lfs_cleanerd utility first appeared in 4.4BSD.
BSD August 6, 2009 BSD