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Understanding Disk Usage in Linux

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Re: Understanding Disk Usage in Linux

#22
post #18
post #14

Earlier quoted context omitted.

Cool => I'll then probably reformat on my root server the partition hosting the images of my VMs from EXT4 to XFS => then to make 100% backups from time to time I would just have to shut them down for a minute, do a "cp --reflink" of their image-file on the host/dom0, then I could start them up again and do anytime later the slow download of their "copied" file. Any recommendations about a utility (working on a layer…

I believe rsync is the utility you are looking for.

Damn, now I'm ashamed of myself - it's since forever that I'm using rsync... :)

I think that when I tested this with rsync a long time back I did a similar mistake like this one https://stackoverflow.com/questions/28819379/block-level-cop... (doing a sync not over a network) and/or this one https://www.reddit.com/r/linux/comments/3nhx0p/rsync_block_l... (doing a sync by adding/removing some bytes instead of just changing their values, as it would happen in the preallocated img-file of the VMs).

I'll test it again - thanks a lot for the info!!

Re: Understanding Disk Usage in Linux

#23
post #2

Website seems to be hugged to death, here's an archived copy: https://web.archive.org/web/20190429214402/https://ownyourbi... The article is well worth reading as it's reasonably comprehensive, including a small foray into COW filesystem.

Reminder that all HN submissions are archived at archive.is, just prepend archive.is/ to the url

Re: Understanding Disk Usage in Linux

#24
post #8
post #7

Earlier quoted context omitted.

Is that a reference to Hug Bot? https://pbfcomics.com/comics/hug-bot/

Not sure, but I always thought "hug of death" came from reddit: https://en.wikipedia.org/wiki/Slashdot_effect

Previously, that was called "slashdotting".

(Knowing such things makes me feel kind of old).

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