[conspire] (forw) Re: Is my root partition dying?

[Rick Moen]

Excellent tips from someone who really knows what he's talking about.

----- Forwarded message from "Trent W. Buck via luv-main" <luv-main at luv.asn.au> -----

Date: Mon, 21 Dec 2015 11:30:59 +1100
From: "Trent W. Buck via luv-main" <luv-main at luv.asn.au>
To: luv-main at luv.asn.au
Subject: Re: Is my root partition dying?
Reply-To: "Trent W. Buck" <trentbuck at gmail.com>

David Zuccaro via luv-main
<luv-main at luv.asn.au> writes:

> nice rsync [...]

Suggest (from memory, untested):

  nice ionice -c3 chrt --idle 0 rsync
  --rsh='ssh -oIPQoS=throughput'
  --rsync-path='nice ionice -c3 chrt --idle 0 rsync'
  [...]

These basically translate to "let me run backups during the day without
$boss complaining that his cattube videos are slow".

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----- Forwarded message from "Trent W. Buck via luv-main" <luv-main at luv.asn.au> -----

Date: Mon, 21 Dec 2015 11:14:14 +1100
From: "Trent W. Buck via luv-main" <luv-main at luv.asn.au>
To: luv-main at luv.asn.au
Subject: Re: Is my root partition dying?
Reply-To: "Trent W. Buck" <trentbuck at gmail.com>

Rick Moen via luv-main
<luv-main at luv.asn.au> writes:

> You could also try using the ddrescue utility on the other recovery
> disk [...]

Note there are two ddrescue's -- the original and GNU.
I switched to GNU because the original ddrescue isn't in Debian 7+.
I don't have an opinion about which is better.

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----- Forwarded message from "Trent W. Buck via luv-main" <luv-main at luv.asn.au> -----

Date: Mon, 21 Dec 2015 11:09:10 +1100
From: "Trent W. Buck via luv-main" <luv-main at luv.asn.au>
To: luv-main at luv.asn.au
Subject: Re: Is my root partition dying?
Reply-To: "Trent W. Buck" <trentbuck at gmail.com>

David Zuccaro via luv-main <luv-main at luv.asn.au> writes:

> Hi, I'm running fsck on my root partition and getting lots of io
> errors as shown in the link.
>
> What should I do?
> Is my disk dead or can it still be used?
>
> https://www.dropbox.com/s/d3m019akv70xihs/2015-12-17%2000.50.59.jpg?dl=0

The "{ DRDY ERR }" means the OS can't talk to the disk.

While this is *probably* the hard disk dying,
it could also be a faulty cable or motherboard.

I would

 * check backups.
   Others have already discussed this in this thread.

 * do smart self-tests "short" and then "long".
   If either fail, replace the disk.

 * move disk to new computer & do fsck &c;
   does the fault follow the disk?
   If not, check other components (e.g. cable).

 * consider RAID1.

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