[lustre-discuss] lustre client 2.9 cannot mount 2.10.0 OSTs

Riccardo Veraldi Riccardo.Veraldi at cnaf.infn.it
Mon Aug 7 20:09:34 PDT 2017


it is like if my /etc/modprobe.d/lustre.conf gets completely ignored
when lnet module is loaded

On 8/7/17 7:05 PM, Cowe, Malcolm J wrote:
> Lustre file system names cannot exceed 8 characters in length, but “scratch12” is 9 characters. Try changing the fsname to a smaller string. You can do this with tunefs.lustre on all the storage targets, but I can’t remember if you need to use --erase-params and recreate all the options. Alternatively, reformat.
>
> Malcolm.
>
> On 8/8/17, 11:30 am, "lustre-discuss on behalf of Riccardo Veraldi" <lustre-discuss-bounces at lists.lustre.org on behalf of Riccardo.Veraldi at cnaf.infn.it> wrote:
>
>     trying to debug more this problem looks like tcp port 9888 is closed on
>     the MDS.
>     this is weird. lnet module is running. There is no firewall and OSSs and
>     MDS are on the same subnet.
>     but I Cannot connect to port 9888.
>     There is anything which changed in Lustre 2.10.0 related to lnet and TCP
>     ports that I need to take care of in the configuration ?
>     
>     On 8/7/17 6:13 PM, Riccardo Veraldi wrote:
>     > Hello,
>     >
>     > I have a new Lustre cluster based on Lustre 2.10.0/ZFS 0.7.0 on Centos 7.3
>     > Lustre FS creation went smooth.
>     > When I tryed then to mount from the clients, Lustre is not able to mount
>     > any of the OSTs.
>     > It stops at MGS/MDT level.
>     >
>     > this is from the client side:
>     >
>     > mount.lustre: mount 192.168..48.254 at tcp2:/scratch12 at
>     > /reg/data/scratch12 failed: Invalid argument
>     > This may have multiple causes.
>     > Is 'scratch12' the correct filesystem name?
>     > Are the mount options correct?
>     > Check the syslog for more info.
>     >
>     > Aug  7 17:58:53 psana1510 kernel: [285130.463377] LustreError:
>     > 29240:0:(mgc_request.c:335:config_log_add()) logname scratch12-client is
>     > too long
>     > Aug  7 17:58:53 psana1510 kernel: [285130.463772] Lustre:
>     > 3333:0:(client.c:2114:ptlrpc_expire_one_request()) @@@ Request sent has
>     > failed due to network error: [sent 1502153933/real 1502153933] 
>     > req at ffff88203d75ec00 x1574823717093632/t0(0)
>     > o250->MGC192.168.48.254 at tcp2@192.168.48.254 at tcp2:26/25 lens 520/544 e 0
>     > to 1 dl 1502153938 ref 1 fl Rpc:eXN/0/ffffffff rc 0/-1
>     > Aug  7 17:58:53 psana1510 kernel: [285130.469156] LustreError: 15b-f:
>     > MGC192.168.48.254 at tcp2: The configuration from log
>     > 'scratch12-client'failed from the MGS (-22).  Make sure this client and
>     > the MGS are running compatible versions of Lustre.
>     > Aug  7 17:58:53 psana1510 kernel: [285130.472072] Lustre: Unmounted
>     > scratch12-client
>     > Aug  7 17:58:53 psana1510 kernel: [285130.473827] LustreError:
>     > 29240:0:(obd_mount.c:1505:lustre_fill_super()) Unable to mount  (-22)
>     >
>     > from the MDS side there is nothing in syslog. So I tried to engage tcpdump:
>     >
>     > 17:58:53.745610 IP psana1510.pcdsn.1023 >
>     > psanamds12.pcdsn.cyborg-systems: Flags [S], seq 1356843681, win 29200,
>     > options [mss 1460,sackOK,TS val 284847388 ecr 0,nop,wscale 7], length 0
>     > 17:58:53.745644 IP psanamds12.pcdsn.cyborg-systems >
>     > psana1510.pcdsn.1023: Flags [R.], seq 0, ack 1356843682, win 0, length 0
>     > 17:58:58.757421 ARP, Request who-has psanamds12.pcdsn tell
>     > psana1510.pcdsn, length 46
>     > 17:58:58.757441 ARP, Reply psanamds12.pcdsn is-at 00:1a:4a:16:01:56 (oui
>     > Unknown), length 28
>     >
>     > OSS, nothing in the log file or in tcpdump
>     >
>     > lustre client is 2.9 and the server 2.10.0
>     >
>     > I have no firewall running and no SElinux
>     >
>     > this never happened to me before. I am usually running older lustre
>     > versions on clients but I never had this problem before.
>     > Any hint ?
>     >
>     > thank you very much
>     >
>     > Rick
>     >
>     >
>     >
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