From: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
To: dm-devel@redhat.com
Subject: Re: Can anyone help me understand what is going wrong with a dm-multipah config I have?
Date: Mon, 25 Jan 2016 11:23:34 -0200 [thread overview]
Message-ID: <56A621D6.5090909@linux.vnet.ibm.com> (raw)
In-Reply-To: <CACyXjPzV32k3oP2m2M4HaOcXtEAvcLA0jDDB=r+D=9AJ9y2Frg@mail.gmail.com>
On 11/18/2015 02:55 PM, Richard Sharpe wrote:
> Why does dm-multipath not switch to using the alternate paths?
I seem to recall one case where the iSCSI-related timeouts were not
set to lower values, for multipathing. So, failover took more time
than expected (ending up in the default value of 120 seconds iirc).
It was documented in the open-iscsi readme, section 8 advanced config
(includes topics for multipath configurations).
Additional references:
[1]
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/html/Online_Storage_Reconfiguration_Guide/iscsi-replacements_timeout.html
[2]
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/html/Online_Storage_Reconfiguration_Guide/iscsi-modifying-link-loss-behavior-dmmultipath.html
Hope this helps,
--
Mauricio Faria de Oliveira
IBM Linux Technology Center
prev parent reply other threads:[~2016-01-25 13:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-18 16:55 Can anyone help me understand what is going wrong with a dm-multipah config I have? Richard Sharpe
2016-01-25 13:23 ` Mauricio Faria de Oliveira [this message]
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=56A621D6.5090909@linux.vnet.ibm.com \
--to=mauricfo@linux.vnet.ibm.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).