"Wrong Array..."

Post #303026952 by Peasant on Wednesday 5th of December 2018 12:11:56 PM

Full Discussion: Wrong Array...
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:
 

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Moose::Autobox::Array(3)				User Contributed Perl Documentation				  Moose::Autobox::Array(3)

NAME
Moose::Autobox::Array - the Array role SYNOPOSIS
use Moose::Autobox; [ 1..5 ]->isa('ARRAY'); # true [ a..z ]->does('Moose::Autobox::Array'); # true [ 0..2 ]->does('Moose::Autobox::List'); # true print "Squares: " . [ 1 .. 10 ]->map(sub { $_ * $_ })->join(', '); print [ 1, 'number' ]->sprintf('%d is the loneliest %s'); print ([ 1 .. 5 ]->any == 3) ? 'true' : 'false'; # prints 'true' DESCRIPTION
This is a role to describe operations on the Array type. METHODS
pop push ($value) shift unshift ($value) delete ($index) sprintf ($format_string) slice (@indices) flatten flatten_deep ($depth) first last Indexed implementation at ($index) put ($index, $value) exists ($index) keys values kv each each_key each_value each_n_values ($n, $callback) List implementation head tail join (?$seperator) length map (&block) grep (&block) Note that, in both the above, $_ is in scope within the code block, as well as being passed as $_[0]. As per CORE::map and CORE::grep, $_ is an alias to the list value, so can be used to modify the list, viz: use Moose::Autobox; my $foo = [1, 2, 3]; $foo->map( sub {$_++} ); print $foo->dump; yields $VAR1 = [ 2, 3, 4 ]; reverse sort (?&block) Junctions all any none one meta print say BUGS
All complex software has bugs lurking in it, and this module is no exception. If you find a bug please either email me, or add the bug to cpan-RT. AUTHOR
Stevan Little <stevan@iinteractive.com> COPYRIGHT AND LICENSE
Copyright 2006-2008 by Infinity Interactive, Inc. <http://www.iinteractive.com> This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.18.2 2013-10-27 Moose::Autobox::Array(3)

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