On 18 Jul 2023, at 8:44, Kinglong Mee wrote:
> When a directory contains 17 files (except . and ..), nfs client sends
> a redundant readdir request after get eof.
>
> A simple reproduce,
> At NFS server, create a directory with 17 files under exported directory.
> # mkdir test
> # cd test
> # for i in {0..16} ; do touch $i; done
>
> At NFS client, no matter mounting through nfsv3 or nfsv4,
> does ls (or ll) at the created test directory.
>
> A tshark output likes following (for nfsv4),
>
> # tshark -i eth0 tcp port 2049 -Tfields -e ip.src -e ip.dst -e nfs -e
> nfs.cookie4
>
> srcip dstip SEQUENCE, PUTFH, READDIR 0
> dstip srcip SEQUENCE PUTFH READDIR
> 909539109313539306,2108391201987888856,2305312124304486544,2566335452463141496,2978225129081509984,4263037479923412583,4304697173036510679,4666703455469210097,4759208201298769007,4776701232145978803,5338408478512081262,5949498658935544804,5971526429894832903,6294060338267709855,6528840566229532529,8600463293536422524,9223372036854775807
> srcip dstip
> srcip dstip SEQUENCE, PUTFH, READDIR 9223372036854775807
> dstip srcip SEQUENCE PUTFH READDIR
>
> The READDIR with cookie 9223372036854775807(0x7FFFFFFFFFFFFFFF) is
> redundant.
>
> Signed-off-by: Kinglong Mee <kinglongmee@xxxxxxxxx>
Weird, I never got a copy from linux-nfs. The plain-text version of this
is whitespace damaged, but the HTML version looks right.
Reviewed-by: Benjamin Coddington <bcodding@xxxxxxxxxx>
Ben
