On 2/17/2023 5:30 AM, Stuart Henderson wrote:
They're often slower (especially in failure conditions) and more complex.
Reconstructing RAID5/6 after a drive failure is pretty intensive on the
other disks.
Not only that but your other (or spare) drives may have a bad sector
that won't be detect
> We write our own software.
Kudos, appointed somewhere..
However, when you are under data recovery a ready system utility
eventually could bring some appreciable goodness to the most..
-- Daniele Bonini
On Fri, Feb 17, 2023 at 04:24:19PM +0100, Daniele B. wrote:
> Feb 17, 2023 11:51:52 Crystal Kolipe :
>
> > Then you perform your weekly backup, overwriting an older backup which had
> > a good copy of the file in question. But this time when the system reads
> > the file in from the _bad_ disk, a
Feb 17, 2023 11:51:52 Crystal Kolipe :
> Then you perform your weekly backup, overwriting an older backup which had
> a good copy of the file in question. But this time when the system reads
> the file in from the _bad_ disk, and corrupt data gets written to your
> backup.
>
> Verifying the back
On Fri, Feb 17, 2023 at 10:30:42AM -, Stuart Henderson wrote:
> On 2023-02-17, Eric Johnson <726960+openbsd0...@pm.me> wrote:
> > Ask yourself what happens when someone writes a file to a mirror?
> > Answer: It means that both drives in the mirror will then contain the
> > file. If you make a m
On 2023-02-17, Eric Johnson <726960+openbsd0...@pm.me> wrote:
> Ask yourself what happens when someone writes a file to a mirror?
> Answer: It means that both drives in the mirror will then contain the
> file. If you make a mistake in the file, it means that you have the
> issue on both drives and
> The operating system has other tools for ensuring data integrity and
> compactness."
I can confirm you this statement:
1) With OpenBSD and FFS you can remain enough quite and there is no
way of comparison with any other OS.
2) You need to set your supporting backups almost at th
ead. That's it. Error checking? Deduplication? No.
> The operating system has other tools for ensuring data integrity and
> compactness."
>
> If I setup a couple of drives in a RAID mirror on OpenBSD to serve as
> a NAS box, what is the best way to ensure data integrity?
>
ion_ or at least as a user-land
task, and not try to build a fancy 'one size fits all' solution to the
(perceived), problem with a complex combination of RAID arrays, funky
filesystems, and other trickery.
And the other key to ensuring data integrity over a long period of time is
to
In the latest book by Michael Lucas, OpenBSD Mastery: Filesystems, Michael
writes, "A filesystem should put data on disk. That data should be safely
stored and reliably read. That's it. Error checking? Deduplication? No.
The operating system has other tools for ensuring data int
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