Visit The New, Modern Unix Linux Community

Full Discussion: Wrong Array...
The Lounge War Stories Wrong Array... Post 303026952 by Peasant on Wednesday 5th of December 2018 12:11:56 PM
I have similar story regarding UPS, diesel motor and not so automatic power switch Smilie
Needless to say i got a call in 3 in the morning, jumped on my bike, drove to DC to see sweaty engineers with laptops everywhere.
The senior management was also there, breading behind our necks - which did not speed up the process, rather slowed it down.

So i joined the party and started breaking sweat, to find some NFS clustered UFS filesystems needed fsck (big filesystems), but the clusterware timeout happend due to lasting to long.
Then when timeout occurred, the package was switched to another node, started fsck again ... nightmare loop to say.

Was happy since i prepared ZFS some days ago and clustered to do migration to new storage, so i offlined and unmanaged the package in question, mounted the UFS in read only and ran couple of rsyncs.
By the time everything else got up, everything but couple of TB filesystems mostly used for archive, were done.
The NFS was accessible immediately so apps can write, but data was continuously pouring for the rest of the day, and checksuming in the days that followed Smilie

It went pretty well (no major consequence in general, except downtime), for which part i blame enterprise storage batteries which held the data in cache and flushed it to disks when powered back on again.
Among other things, since this was a extremely mixed environment hardware and operating system wise.

Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
 
Test Your Knowledge in Computers #175
Difficulty: Medium
ENIAC was one of the first electronic computers and occupied 167 square meters, weighed 27 tons and consumed 150kW of electricity.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

create array holding characters from sring then echo array.

Hi, I wish to store $string1 in $string1array a character in each array element. Then i wish to echo the entire array to the screen so that it reads as the normal string again. I have been trying with the code below but does not work. Please help... To put string into array: ... (5 Replies)
Discussion started by: rorey_breaker
5 Replies

2. Programming

Creating an array to hold posix thread ids: Only dynamic array works

I am facing a strange error while creating posix threads: Given below are two snippets of code, the first one works whereas the second one gives a garbage value in the output. Snippet 1 This works: -------------- int *threadids; threadids = (int *) malloc (num_threads * sizeof(int)); ... (4 Replies)
Discussion started by: kmehta
4 Replies

3. Shell Programming and Scripting

PHP: Search Multi-Dimensional(nested) array and export values of currenly worked on array.

Hi All, I'm writing a nagios check that will see if our ldap servers are in sync... I got the status data into a nested array, I would like to search key of each array and if "OK" is NOT present, echo other key=>values in the current array to a variable so...eg...let take the single array... (1 Reply)
Discussion started by: zeekblack
1 Replies

4. Shell Programming and Scripting

perl, put one array into many array when field is equal to sth

Hi Everyone, #!/usr/bin/perl use strict; use warnings; my @test=("a;b;qqq;c;d","a;b;ggg;c;d","a;b;qqq;c;d"); would like to split the @test array into two array: @test1=(("a;b;qqq;c;d","a;b;qqq;c;d"); and @test2=("a;b;ggg;c;d"); means search for 3rd filed. Thanks find the... (0 Replies)
Discussion started by: jimmy_y
0 Replies

5. Shell Programming and Scripting

Store all the passed arguments in an array and display the array

Hi I want to write a script which store all the parameters passed to the script into an array. Once it is stored I want scan through the array and and delete those files for last month present inside the directory. The files in directory is appneded with YYYY_MM_DD. I want to know how can I... (3 Replies)
Discussion started by: dgmm
3 Replies

6. Shell Programming and Scripting

Array in Perl - Detect several file to be in one array

Hi everyone I have one question about using array in perl. let say I have several log file in one folder.. example test1.log test2.log test3.log and the list goes on.. how to make an array for this file? It suppose to detect log file in the current directory and all the log file will... (3 Replies)
Discussion started by: sayachop
3 Replies

7. Shell Programming and Scripting

PERL : Read an array and write to another array with intial string pattern checks

I have an array and two variables as below, I need to check if $datevar is present in $filename. If so, i need to replace $filename with the values in the array. I need the output inside an ARRAY How can this be done. Any help will be appreciated. Thanks in advance. (2 Replies)
Discussion started by: irudayaraj
2 Replies

8. Shell Programming and Scripting

Why result is wrong here ? whether break statement is wrong ?

Hi ! all I am just trying to check range in my datafile pls tell me why its resulting wrong admin@IEEE:~/Desktop$ cat test.txt 0 28.4 5 28.4 10 28.4 15 28.5 20 28.5 25 28.6 30 28.6 35 28.7 40 28.7 45 28.7 50 28.8 55 28.8 60 28.8 65 28.1... (2 Replies)
Discussion started by: Akshay Hegde
2 Replies

9. Shell Programming and Scripting

Bash 3.2 - Array / Regex - IF 3rd member in array ends in 5 digits then do somthing...

Trying to do some control flow parsing based on the index postion of an array member. Here is the pseudo code I am trying to write in (preferably in pure bash) where possible. I am thinking regex with do the trick, but need a little help. pesudo code if == ENDSINFIVEINTS ]]; then do... (4 Replies)
Discussion started by: briandanielz
4 Replies

10. Shell Programming and Scripting

Bash arrays: rebin/interpolate smaller array to large array

hello, i need a bit of help on how to do this effectively in bash without a lot of extra looping or massive switch/case i have a long array of M elements and a short array of N elements, so M > N always. M is not a multiple of N. for case 1, I want to stretch N to fit M arrayHuge H = (... (2 Replies)
Discussion started by: f77hack
2 Replies
FSCK(8) 						    BSD System Manager's Manual 						   FSCK(8)

NAME
fsck -- filesystem consistency check and interactive repair SYNOPSIS
fsck -p [-f] fsck [-l maxparallel] [-q] [-y] [-n] [-d] DESCRIPTION
The first form of fsck preens a standard set of filesystems or the specified filesystems. It is normally used in the script /etc/rc during automatic reboot. Here fsck reads the filesystem descriptor table (using getfsent(3)) to determine which filesystems to check. Only parti- tions that have ``rw,'' ``rq'' or ``ro'' as options, and that have non-zero pass number are checked. Filesystems with pass number 1 (nor- mally just the root filesystem) are checked one at a time. When pass 1 completes, all remaining filesystems are checked, running one process per disk drive. The disk drive containing each filesystem is inferred from the shortest prefix of the device name that ends in one or more digits; the remaining characters are assumed to be the partition designator. In preening mode, filesystems that are marked clean are skipped. Filesystems are marked clean when they are unmounted, when they have been mounted read-only, or when fsck runs on them success- fully. It should be noted that fsck is now essentially a wrapper that invokes other fsck_XXX utilities as needed. Currently, fsck can invoke fsck_hfs, fsck_msdos, fsck_exfat, and fsck_udf. If this underlying process that fsck invokes encounters serious inconsistencies or the filesystem type is not one of the above, it exits with an abnormal return status and an automatic reboot will then fail. For each corrected inconsistency one or more lines will be printed identifying the filesystem on which the correction will take place, and the nature of the correction. If sent a QUIT signal, fsck will finish the filesystem checks, then exit with an abnormal return status that causes an automatic reboot to fail. This is useful when you want to finish the filesystem checks during an automatic reboot, but do not want the machine to come up multi- user after the checks complete. Without the -p option, fsck audits and interactively repairs inconsistent conditions for filesystems. It should be noted that some of the corrective actions which are not correctable under the -p option will result in some loss of data. The amount and severity of data lost may be determined from the diagnostic output. If the operator does not have write permission on the filesystem fsck will default to a -n action. The following flags are interpreted by fsck and passed along to the underlying tool that it spawns. -f Force fsck to check `clean' filesystems when preening. -l Limit the number of parallel checks to the number specified in the following argument. By default, the limit is the number of disks, running one process per disk. If a smaller limit is given, the disks are checked round-robin, one filesystem at a time. -p "Preen" mode, described above. -q Do a quick check to determine if the filesystem was unmounted cleanly. -y Assume a yes response to all questions asked by fsck; this should be used with great caution as this is a free license to con- tinue after essentially unlimited trouble has been encountered. -n Assume a no response to all questions asked by fsck except for 'CONTINUE?', which is assumed to be affirmative; do not open the filesystem for writing. If no filesystems are given to fsck then a default list of filesystems is read using getfsent(3). Because of inconsistencies between the block device and the buffer cache, the raw device should always be used. SEE ALSO
fs(5), fsck_hfs(8), fsck_msdos(8), getfsent(3), reboot(8) 4th Berkeley Distribution May 18, 2010 4th Berkeley Distribution

Featured Tech Videos

All times are GMT -4. The time now is 01:46 AM.
Unix & Linux Forums Content Copyright 1993-2020. All Rights Reserved.
Privacy Policy