this is the main summery of the mail thread regarding this issue. FWing to the list for others reference.
---------- Forwarded message ---------- From: Mike Christie <[email protected]> Date: Thu, Dec 16, 2010 at 12:47 AM Subject: Re: Please clarify is this normal when using multipathing on [MD3000i] ? (Buffer I/O error on device sdc, logical block 4) To: Aviad Raviv <[email protected]> On 12/15/2010 04:26 PM, Aviad Raviv wrote: > BTW the squeeze box is a lot less agitated and actually doesn't show as > much > of the block IO errors as lenny. > but as we are not close to moving everything to squeeze, what can i do over > on the Lenny side of stuff to ease the situation? > > I am not very familiar with Debian. Does Lenny only have the older kernel? If so then I think you do not have many options. 1. You can live with the error messages. They are harmless but anooying. If I remember correctly though it might slow down the startup a bit because we are sending extra IOs, but I cannot remember how bad it was now (I used to work on these boxes when I worked at IBM but that was like 10 years ago). 2. Switch to non rdac mode if you can. That has other drawbacks. 3. I do not know. Post to the dm-devel list and see if other people have suggestions. 4. Ask someone to port the device handler stuff to older kernels. Does debian have that or does Ubuntu do that? I do not know. 5. Switch to RHEL/Centos where we have support :) Just kidding. I work for Red Hat :) -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/open-iscsi?hl=en.
