New M3 2TB drive with EXT4-fs warning (device sdc1): ext4_end_bio:317:

hendry · 2015-02-15 16:20:42

Hi guys, I bought a new 2TB Samsung USB3 disk for 139SGD and I worried I might not have set it up correctly at EXT4 drive for backups:

x220:~$ sudo fdisk -l /dev/sdc

Disk /dev/sdc: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: FCDE6441-7BD8-482B-BA76-6115CDC0DFF8

Device     Start        End    Sectors  Size Type
/dev/sdc1   2048 3907029134 3907027087  1.8T Linux filesystem
x220:~$ sudo blkid | grep sdc
/dev/sdc1: UUID="8f62dae3-b955-4a9e-b8ad-28cce9b8df56" TYPE="ext4" PARTUUID="2284b761-44cc-4d5b-af2b-8f45f18a9685"
x220:~$ grep 8f62dae3 /etc/fstab
UUID="8f62dae3-b955-4a9e-b8ad-28cce9b8df56" /mnt/m3 auto noauto,noatime,users,nofail 0 0
x220:~$

To my dismay when I did a sustained transfer on it on my only USB3 port of my Thinkpad X220 (Sandy Bridge):

[27705.858159] EXT4-fs warning (device sdc1): ext4_end_bio:317: I/O error -5 writing to inode 105383762 (offset 0 size 2093056 starting
block 422637529)
[27705.858168] Buffer I/O error on device sdc1, logical block 422637243
[27705.858175] Buffer I/O error on device sdc1, logical block 422637244

Full log: http://ix.io/gkJ

I can't seem to reproduce the issue. It's working fine atm. Is the drive a dud? Are there some tools I can use to check this drive? Is there a better (more reliable) file system configuration?

R00KIE · 2015-02-16 15:51:28

I would have done all write+verify passes of badblocks and check the smart status before putting the drive to use. That said, it might be that the drive might needs some quirks to work without problems. On another note, so far my experience with Samsung disks (rotational media) has been bad, personally if I can avoid their drives I will.

Also make sure that nothing is trying to get the smart status of the drive while you are actively reading or writing, I have found that to be a sure recipe for data loss with the Samsung drives I have dealt with so far. Things may be different now, but I have been burned enough before.

hendry · 2015-02-23 00:30:01

Tbh, it's been reliable on my new Broadwell based PC.

Arch Linux

#1 2015-02-15 16:20:42

New M3 2TB drive with EXT4-fs warning (device sdc1): ext4_end_bio:317:

#2 2015-02-16 15:51:28

Re: New M3 2TB drive with EXT4-fs warning (device sdc1): ext4_end_bio:317:

#3 2015-02-23 00:30:01

Re: New M3 2TB drive with EXT4-fs warning (device sdc1): ext4_end_bio:317:

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