Gentoo Archives: gentoo-user

From: Wols Lists <antlists@××××××××××××.uk>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Testing a used hard drive to make SURE it is good.
Date: Tue, 16 Jun 2020 11:02:45
Message-Id: 5EE8A6C9.9020900@youngman.org.uk
In Reply to: Re: [gentoo-user] Testing a used hard drive to make SURE it is good. by Dale
1 On 16/06/20 10:04, Dale wrote:
2 > I might add, I don't have LVM on that drive. I read it does not work
3 > well with LVM, RAID etc as you say. Most likely, that drive will always
4 > be a external drive for backups or something. If it ever finds itself
5 > on the OS or /home, it'll be a last resort.
6
7 LVM it's probably fine with. Raid, MUCH less so. What you need to make
8 sure does NOT happen is a lot of random writes. That might make deleting
9 an lvm snapshot slightly painful ...
10
11 But adding a SMR drive to an existing ZFS raid is a guarantee for pain.
12 I don't know why, but "resilvering" causes a lot of random writes. I
13 don't think md-raid behaves this way.
14
15 But it's the very nature of raid that, as soon as something goes wrong
16 and a drive needs replacing, everything is going to get hammered. And
17 SMR drives don't take kindly to being hammered ... :-)
18
19 Even in normal use, a SMR drive is going to cause grief if it's not
20 handled carefully.
21
22 Cheers,
23 Wol

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Re: [gentoo-user] Testing a used hard drive to make SURE it is good. Dale <rdalek1967@×××××.com>