[lug] SD write timeouts, drive appears to be fine

[Matt James]

IMHO, for a drive that's approaching 8 years of power on and starting to
possibly show errors - probably time to consider replacing it.  At least
make sure that you're not relying on it for anything too important.  Drives
are inexpensive enough that it's cheap insurance.

That said, If you can't be certain it's the drive, I'd explore the
controller.  Maybe move it to another port or try a different controller
all together.

My $0.02

Matt

On Fri, Dec 21, 2018 at 10:52 PM Jed S. Baer <blug at jbaer.cotse.net> wrote:

> I'm getting some HD write errors in kern.log. At the time of the errors,
> the only thing running is rdiff-backup, which writes to the drive in
> question. rdiff-backup reports 0 errors on multiple backup runs.
>
> I tried using the find -inum command to locate the file where the write
> error is occurring, but it finds no such file. Multiple messages have the
> same inode number.
>
> The drive is a Hitachi Deskstar, with a lifetime of 63594 hours. I ran a
> SMART extended self-test, and the drive passes that, with no attributes
> even close the thresholds.
>
> Here's the sort of messages I'm seeing.
>
> scsi_io_completion: 1 callbacks suppressed
> tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_TIMEOUT
> tag#0 CDB: Write(10) 2a 00 23 fd 64 ff 00 03 40 00
> blk_update_request: 1 callbacks suppressed
> blk_update_request: I/O error, dev sda, sector 603809023
> EXT4-fs warning: 7 callbacks suppressed
> EXT4-fs warning (device sda1): ext4_end_bio:332: I/O error -5 writing to
> inode 29365231 (offset 5234491392 size 5242880 starting block 75476231)
> buffer_io_error: 2558 callbacks suppressed
> Buffer I/O error on device sda1, logical block 75476120
> Buffer I/O error on device sda1, logical block 75476121
> Buffer I/O error on device sda1, logical block 75476122
> Buffer I/O error on device sda1, logical block 75476123
> Buffer I/O error on device sda1, logical block 75476124
> Buffer I/O error on device sda1, logical block 75476125
> Buffer I/O error on device sda1, logical block 75476126
> Buffer I/O error on device sda1, logical block 75476127
> Buffer I/O error on device sda1, logical block 75476128
> Buffer I/O error on device sda1, logical block 75476129
>
> I've tried some web searches, an and not found anything more suggestive
> than possibly bad cabling, though that seemed to be pointed more at USB3,
> and file corruption.
>
> Any suggestions for pinpointing what's causing the problem? I'll probably
> run fsck on it later on Saturday or Sunday.
>
> Thanks.
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