Yep, I've taken the same class. If you have irreplacable data on the drive, you
definantly want to image the drive and try to recover the data. but it really
does take a lot of expertise.
David Lang
On Thu, 3 Oct 2013, Matt Simmons wrote:
I was in Ted Ts'o's "Recovering from Linux Hard Drive Disasters" (
https://www.usenix.org/conference/lisa13/training-program/full-training-program#T4)
at LISA one year. Watching him recover data from a crashed fs is a thing
of beauty.
You CAN do amazing things. I'd really recommend that class if you're going
to LISA.
--Matt
On Thu, Oct 3, 2013 at 10:52 AM, David Lang <[email protected]> wrote:
In practice, you need to be quite an expert to do anything other than -y,
and even then you will probably only do so if the disk has data on it that
you cannot recover any other way.
for just about any production situation, you would want to build a new
system or restore from replica/backup instead of doing a manual fsck, but
that assumes that you _have_ the backup and can correctly recreate the
server, which should be the case, but sometimes isn't ;-p
David Lang
On Thu, 3 Oct 2013, Kevin Sandy wrote:
We recently had some issues with one of our filers that wreaked all kinds
of havoc on our systems. Many had to be rebooted to recover from read-only
root filesystems, and quite a few of those needed a manual fsck. Which led
me to wonder:
When faced with filesystem inconsistencies at boot, does anyone do
anything
other than just 'fsck -y' on the device? I've never known anyone to do
anything else, but I would have to assume some do, otherwise wouldn't it
be
automatic?
-- kevin
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