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pNFS/filelayout: fix cheking if a layout is striped

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A layout can still be striped with num_fh = 1 as it is perfectly possible
that both MDS and DSs can handle the same filehandle. Hence check according
to stripe_count > 1, which is the correct check to begin with.

We should not be called with flseg->dsaddr = NULL, but if for some reason
we do, return our best guess with is flseg->num_fh > 1.

Fixes: a6b9d2fa00 ("pNFS/filelayout: Fix coalescing test for single DS")
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Anna Schumaker <anna.schumaker@hammerspace.com>
This commit is contained in:
Sagi Grimberg
2026-05-13 09:58:24 +03:00
committed by Anna Schumaker
parent ea73384716
commit 91668417d4
1 changed files with 2 additions and 0 deletions
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2
fs/nfs/filelayout/filelayout.c
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@@ -778,6 +778,8 @@ filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid,
static bool
filelayout_lseg_is_striped(const struct nfs4_filelayout_segment *flseg)
{
if (flseg->dsaddr)
return flseg->dsaddr->stripe_count > 1;
return flseg->num_fh > 1;
}