[LU-5642] getxattr failing with EIO

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.5.3
• Fix Version/s: Lustre 2.7.0
• Type: Bug
• Priority: Major
• Reporter: Henri Doreau (Inactive)
• Assignee: James Nunez (Inactive)
• Resolution: Fixed
• Severity: 3

Description

getxattr() calls occasionally fail with EIO. We believe that this is due to a race between concurrent calls on the same file (see ll_xattr_cache_refill):

/* Matched but no cache? Cancelled on error by a parallel refill. */
if (unlikely(req == NULL)) {
CDEBUG(D_CACHE, "cancelled by a parallel getxattr\n");
GOTO(out_maybe_drop, rc = -EIO);
}

This should be adjusted so that both calls end consistenty.

Comments

[Peter Jones]

James

Could you please look into this one?

Thanks

Peter

[Sebastien Buisson (Inactive)]

Hi there,

I think this issue could be a duplicate of LU-3544.

[Bruno Travouillon (Inactive)]

Not a dup, but patch http://review.whamcloud.com/#/c/10693/ can solve the issue. We are testing it right now.

[James Nunez (Inactive)]

Bruno,
Any results on if http://review.whamcloud.com/#/c/10693/ solves the getxattr failing with EIO problem?

Thanks.

[Bruno Travouillon (Inactive)]

James,

Yes, problem solved with the patch.

[James Nunez (Inactive)]

Thank you for the feedback, Bruno.

I'm resolving this ticket because patch http://review.whamcloud.com/#/c/10693/ fixes the issue.