Subject: Re: [CentOS] Errors on an SSD drive



On Wed, Aug 9, 2017, 11:55 AM Mark Haney <[email protected]> wrote:

> To be honest, I'd not try a btrfs volume on a notebook SSD. I did that on a
> couple of systems and it corrupted pretty quickly. I'd stick with xfs/ext4

if you manage to get the drive working again.
>

Sounds like a hardware problem. Btrfs is explicitly optimized for SSD, the
maintainers worked for FusionIO for several years of its development. If
the drive is silently corrupting data, Btrfs will pretty much immediately
start complaining where other filesystems will continue. Bad RAM can also
result in scary warnings where you don't with other filesytems. And I've
been using it in numerous SSDs for years and NVMe for a year with zero
problems.

On CentOS though, I'd get newer btrfs-progs RPM from Fedora, and use either
an elrepo.org kernel, a Fedora kernel, or build my own latest long-term
from kernel.org. There's just too much development that's happened since
the tree found in RHEL/CentOS kernels.

Also FWIW Red Hat is deprecating Btrfs, in the RHEL 7.4 announcement.
Support will be removed probably in RHEL 8. I have no idea how it'll affect
CentOS kernels though. It will remain in Fedora kernels.

Anyway, blkdiscard can be used on an SSD, whole or partition to zero them
out. And at least recent ext4 and XFS mkfs will do a blkdisard, same as
mksfs.btrfs.


Chris Murphy






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> On Wed, Aug 9, 2017 at 1:48 PM, hw <[email protected]> wrote:
>
> > Robert Moskowitz wrote:
> >
> >> I am building a new system using an Kingston 240GB SSD drive I pulled
> >> from my notebook (when I had to upgrade to a 500GB SSD drive). Centos
> >> install went fine and ran for a couple days then got errors on the
> >> console. Here is an example:
> >>
> >> [168176.995064] sd 0:0:0:0: [sda] tag#14 FAILED Result:
> >> hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
> >> [168177.004050] sd 0:0:0:0: [sda] tag#14 CDB: Read(10) 28 00 01 04 68 b0
> >> 00 00 08 00
> >> [168177.011615] blk_update_request: I/O error, dev sda, sector 17066160
> >> [168487.534510] sd 0:0:0:0: [sda] tag#17 FAILED Result:
> >> hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
> >> [168487.543576] sd 0:0:0:0: [sda] tag#17 CDB: Read(10) 28 00 01 04 68 b0
> >> 00 00 08 00
> >> [168487.551206] blk_update_request: I/O error, dev sda, sector 17066160
> >> [168787.813941] sd 0:0:0:0: [sda] tag#20 FAILED Result:
> >> hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
> >> [168787.822951] sd 0:0:0:0: [sda] tag#20 CDB: Read(10) 28 00 01 04 68 b0
> >> 00 00 08 00
> >> [168787.830544] blk_update_request: I/O error, dev sda, sector 17066160
> >>
> >> Eventually, I could not do anything on the system. Not even a 'reboot'.
> >> I had to do a cold power cycle to bring things back.
> >>
> >> Is there anything to do about this or trash the drive and start anew?
> >>
> >
> > Make sure the cables and power supply are ok. Try the drive in another
> > machine
> > that has a different controller to see if there is an incompatibility
> > between
> > the drive and the controller.
> >
> > You could make a btrfs file system on the whole device: that should say
> > that
> > a trim operation is performed for the whole device. Maybe that helps.
> >
> > If the errors persist, replace the drive. I悲 use Intel SSDs because they
> > seam to have the least problems with broken firmwares. Do not use SSDs
> > with
> > hardware RAID controllers unless the SSDs were designed for this
> > application.
> >
> >
> > _______________________________________________
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> > https://lists.centos.org/mailman/listinfo/centos
> >
> >
>
>
> --
> [image: photo]
> Mark Haney
> Network Engineer at NeoNova
> 919-460-3330 <(919)%20460-3330> (opt 1) • [email protected]
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