You are not logged in.

#1 2009-01-23 12:46:28

tsv
Member
From: UK
Registered: 2008-12-03
Posts: 71
Website

Assuming drive cache: write through

So I was checking /var/log/error.log and I got this error:

Jan 23 10:22:49 knuth sd 6:0:0:0: [sdc] Assuming drive cache: write through
Jan 23 10:22:49 knuth sd 6:0:0:0: [sdc] Assuming drive cache: write through

It doesn't seem to be having any effect, the drive still mounts as normal and is accessible, but it would be nice to fix it. It would be a start to be told what it even means?

The drive is an external and connected over USB, with one ext3 partition and one FAT32. Googling has only turned up abandoned unanswered threads, hopefully this one can be more successful.

On a related note, the ext2 drivers in Windows won't read this drive though they cope with my others fine, I'm wondering if this is related as it's the only error I'm seeing.

Cheers.

Edit:

If it helps, this is the output of dmesg | grep sdc

sd 6:0:0:0: [sdc] 976773168 512-byte hardware sectors: (500 GB/465 GiB)
sd 6:0:0:0: [sdc] Write Protect is off
sd 6:0:0:0: [sdc] Mode Sense: 1c 00 00 00
sd 6:0:0:0: [sdc] Assuming drive cache: write through
sd 6:0:0:0: [sdc] 976773168 512-byte hardware sectors: (500 GB/465 GiB)
sd 6:0:0:0: [sdc] Write Protect is off
sd 6:0:0:0: [sdc] Mode Sense: 1c 00 00 00
sd 6:0:0:0: [sdc] Assuming drive cache: write through
 sdc: sdc1 sdc2
sd 6:0:0:0: [sdc] Attached SCSI disk
EXT3 FS on sdc2, internal journal

Last edited by tsv (2009-01-23 12:51:46)

Offline

#2 2009-01-23 15:55:34

pointone
Wiki Admin
From: Waterloo, ON
Registered: 2008-02-21
Posts: 379

Re: Assuming drive cache: write through

Funny that you automatically think it's an error...

Funny that you missed the first Google result for "Assuming drive cache: write through", too:

http://lists.us.dell.com/fom-serve/cache/110.html

big_smile


M*cr*s*ft: Who needs quality when you have marketing?

Offline

#3 2009-01-23 16:16:07

tsv
Member
From: UK
Registered: 2008-12-03
Posts: 71
Website

Re: Assuming drive cache: write through

I assumed it was an error because it was in errors.log, that seems intuitive to me!

As for missing that page? Yeah, my bad, think I must have been braindead when I skimmed over that one. Cheers.

Offline

#4 2011-12-26 22:14:25

bkadoctaj
Member
Registered: 2010-05-02
Posts: 52

Re: Assuming drive cache: write through

The link that was referenced has been taken down...  Could anyone kindly explain what the "Assuming drive cache: write through" message is about?

Offline

#5 2011-12-26 22:30:32

karol
Archivist
Registered: 2009-05-06
Posts: 25,423

Re: Assuming drive cache: write through

pointone suggested  you can simply goggle it ...
http://www.linuxquestions.org/questions … gh-657649/

Offline

#6 2011-12-26 23:00:25

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 12,392

Re: Assuming drive cache: write through

As this thread is over two years old, I am going to close it. 
bkadocaj:  If you like, go ahead and start a new thread with any question or problem you may have.  Link back to this thread.  We close old threads because contemporary solutions may not be consistent with the ancient discussion.  In order to avoid confusion, we segregate the old from the new.  See our policy


Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Like you, I have no idea what you are doing, but I am pretty sure it is wrong...Jasonwryan
----
How to Ask Questions the Smart Way

Online

Board footer

Powered by FluxBB