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ELI5: a tool to check my disks while mounted? (lemmy.world)
submitted 1 year ago by PlutoniumAcid@lemmy.world to c/linux@lemmy.world
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On Windows, we've had the defrag tool and others, that happily works on a drive even while it is in use, even the OS disk.

On Linux, I know of the fsck command but that requires the drive in question to be unmounted. Not great when you want to check a running server. I do not want to stop my server and boot it from USB, just to run a disk check. I can't imagine that's what the data centers are doing, either!

Surely some Linux tool exists that can do some basic checks on a running system?

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[-] nomecks@lemmy.world 2 points 1 year ago* (last edited 1 year ago)

Nearly all systems have some sort of background error checking which periodically reads all data and validates it hasn't changed. They also watch for SMART errors and pre-fail disks before they die entirely.

They use all forms of RAID (Netapp is a weird dual stripe RAID 4, for example) and Erasure coding primarily.

[-] teft@startrek.website 0 points 1 year ago

How does that invalidate anything I said?

[-] Sethayy@sh.itjust.works 1 points 1 year ago

Dude I think this is a more you ain't smart enough to know that youre not smart... just take the L

this post was submitted on 01 Sep 2023
15 points (100.0% liked)

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