From: John Hughes <john@Calva.COM>
To: device-mapper development <dm-devel@redhat.com>
Subject: Re: multipath - AAArgh! How do I turn "features=1 queue_if_no_path" off?
Date: Wed, 30 Sep 2009 19:11:10 +0200 [thread overview]
Message-ID: <4AC3912E.3060908@Calva.COM> (raw)
In-Reply-To: <E463DF2B2E584B4A82673F53D62C2EF474E780A7@cosmail01.lsi.com>
Moger, Babu wrote:
> You will see "features=1 queue_if_no_path" if you have one of the following entry in your multipath.conf.
>
> 1. Features "1 queue_if_no_path"
>
> Or
>
> 2. no_path_retry 5
>
Ah, that was the problem. Now I have "features=0".
I did my silly test again (deleting a LUN that was in use from the
external cabinet) and the system kept working. The errors on the dm-xxx
device propogated back to mdadm which marked it as failed an all was well.
Except that I'm still getting lots of I/O errors:
[ 9019.822396] Buffer I/O error on device dm-17, logical block 17790463
[ 9019.822432] Buffer I/O error on device dm-17, logical block 0
[ 9019.822473] Buffer I/O error on device dm-17, logical block 0
[ 9020.735190] sd 4:0:0:1: queueing MODE_SELECT command.
[ 9020.771075] sd 4:0:0:1: MODE_SELECT failed with sense 0x59100.
[ 9020.793828] sd 4:0:0:1: [sdah] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
[ 9020.793894] sd 4:0:0:1: [sdah] Sense Key : Illegal Request [current]
[ 9020.793932] sd 4:0:0:1: [sdah] Add. Sense: Logical unit not supported
[ 9020.793968] end_request: I/O error, dev sdah, sector 0
[ 9020.793995] device-mapper: multipath: Failing path 66:16.
... endlessly repeating
I was able to stop the errors by
1. removing the failed multipath from the mdadm array
2. using the multipath -f command to flush the deleted disk.
next prev parent reply other threads:[~2009-09-30 17:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-30 10:33 multipath - AAArgh! How do I turn "features=1 queue_if_no_path" off? John Hughes
2009-09-30 15:42 ` malahal
2009-10-01 6:24 ` Hannes Reinecke
2009-10-01 8:55 ` John Hughes
2009-10-01 9:41 ` Diedrich Ehlerding
2009-10-01 9:44 ` Hannes Reinecke
2009-09-30 16:22 ` Moger, Babu
2009-09-30 17:11 ` John Hughes [this message]
2009-10-01 9:05 ` John Hughes
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4AC3912E.3060908@Calva.COM \
--to=john@calva.com \
--cc=dm-devel@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.