First, it's possible our analysis is off somewhere. I never get to your
print message. I put a debug statement at the start of the function so I
know we get there (just to verify my print statements were taking
affect).
I put a print statement for the if (call_count == 0) { call there, right
after the if. I ran some tests.
I suspect that isn't a problem area. There were some interesting results
with an NFS stale file handle error going through that path. Otherwise
it's always errno=0 even in the heavy test case. I'm not concerned about
a stale NFS file handle this moment. That print was also hit heavily when
one server was down (which surprised me but I don't know the internals).
I'm trying to re-read and work through Scott's message to see if any
other print statements might be helpful.
Thank you for your help so far. I will reply back if I find something.
Otherwise suggestions welcome!
The MFG system I can access got smaller this weekend but is still large
enough to reproduce the error.
As you can tell, I work mostly at a level well above filesystem code so
thank you for staying with me as I struggle through this.
Erik
> After we hear from all children, afr_inode_refresh_subvol_cbk() then calls afr_inode_refresh_done()-->afr_txn_refresh_done()-->afr_read_txn_refresh_done().
> But you already know this flow now.
> diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c
> index 4bfaef9e8..096ce06f0 100644
> --- a/xlators/cluster/afr/src/afr-common.c
> +++ b/xlators/cluster/afr/src/afr-common.c
> @@ -1318,6 +1318,12 @@ afr_inode_refresh_subvol_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
> if (xdata)
> local->replies[call_child].xdata = dict_ref(xdata);
> }
> + if (op_ret == -1)
> + gf_msg_callingfn(
> + this->name, GF_LOG_ERROR, op_errno, AFR_MSG_SPLIT_BRAIN,
> + "Inode refresh on child:%d failed with errno:%d for %s(%s) ",
> + call_child, op_errno, local->loc.name,
> + uuid_utoa(local->loc.inode->gfid));
> if (xdata) {
> ret = dict_get_int8(xdata, "link-count", &need_heal);
> local->replies[call_child].need_heal = need_heal;
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