Hi Thomas,

I actually did that already but forgot to add the strace lines to the initial 
email. But it is still unclear to me why open function is called with the 
O_RDONLY flag.

[pid 2348817] open("/cluster", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 12
[pid 2348817] ioctl(12, _IOC(_IOC_WRITE, 0x66, 0x94, 0x08), 0x7ffef3f20240) = 
-1 ENOTTY (Inappropriate ioctl for device)

# grep lustre /proc/mounts
10.3.5.18@o2ib,10.4.5.18@o2ib1:10.3.5.19@o2ib,10.4.5.19@o2ib1:/scratch /cluster 
lustre rw,flock,lazystatfs 0 0


Thanks,
Lorand Szentannai

> On 28 Nov 2018, at 12:47, LEIBOVICI Thomas <[email protected]> wrote:
> 
> Hello,
> 
> If you run "strace -f  robinhood --readlog" you should see the ioctl that 
> causes this error, and its arguments.
> 
> Thomas
> 
> On 11/28/18 07:36, Lorand Szentannai wrote:
>> Hi,
>> 
>> We've recently upgraded to Lustre 2.10.5 and to Robinhood to 3.1.4.
>> Processing changelogs fails now with "ERROR -25 opening changelog for MDT 
>> 'scratch-MDT0000': Inappropriate ioctl for device".
>> 
>> Could you please advice on how to solve this? Note that currently MGS and 
>> MDS are running on two separate servers.
>> 
>> ----------------------------------------------------------------------------------
>> ChangeLog {
>>     MDT {
>>         mdt_name = "MDT0000";
>>         reader_id = "cl4";      # yes, it is cl4
>>     }
>>     force_polling    = ON ;
>>     polling_interval = 60s ;
>> }
>> ----------------------------------------------------------------------------------
>> 
>> ----------------------------------------------------------------------------------
>> # lfs changelog scratch-MDT0000 |head
>> 
>> 8211574766 10OPEN  22:24:39.830737089 2018.11.27 0x43 
>> t=[0x200033cc4:0x4e9d:0x0]
>> 8211574767 13TRUNC 22:24:39.831280872 2018.11.27 0xe 
>> t=[0x200033cc4:0x4e9d:0x0]
>> 8211574768 11CLOSE 22:24:39.831774075 2018.11.27 0x43 
>> t=[0x200033cc4:0x4e9d:0x0]
>> 8211574769 10OPEN  22:24:39.831950980 2018.11.27 0x43 
>> t=[0x200033cc4:0x4e9e:0x0]
>> 8211574770 13TRUNC 22:24:39.832289331 2018.11.27 0xe 
>> t=[0x200033cc4:0x4e9e:0x0]
>> 8211574771 11CLOSE 22:24:39.832765269 2018.11.27 0x43 
>> t=[0x200033cc4:0x4e9e:0x0]
>> 8211574772 10OPEN  22:24:39.832942039 2018.11.27 0x43 
>> t=[0x200033cc4:0x4e9f:0x0]
>> 8211574773 13TRUNC 22:24:39.833241628 2018.11.27 0xe 
>> t=[0x200033cc4:0x4e9f:0x0]
>> 8211574774 11CLOSE 22:24:39.833541406 2018.11.27 0x43 
>> t=[0x200033cc4:0x4e9f:0x0]
>> 8211574775 10OPEN  22:24:39.833672445 2018.11.27 0x43 
>> t=[0x200033cc4:0x4ea0:0x0]
>> ----------------------------------------------------------------------------------
>> 
>> ----------------------------------------------------------------------------------
>> # robinhood --readlog
>> 
>> 2018/11/28 07:20:54 [2070664/1] Main | EntryProcessor successfully 
>> initialized
>> 2018/11/28 07:20:54 [2070664/1] ChangeLog | mdt[0] = MDT0000
>> 2018/11/28 07:20:54 [2070664/1] ListMgr | Logged on to database 
>> 'robinhood_scratch' successfully
>> 2018/11/28 07:20:54 [2070664/1] ListMgr | SQL query: SET SESSION TRANSACTION 
>> ISOLATION LEVEL READ COMMITTED
>> 2018/11/28 07:20:54 [2070664/3] ListMgr | Logged on to database 
>> 'robinhood_scratch' successfully
>> 2018/11/28 07:20:54 [2070664/3] ListMgr | SQL query: SET SESSION TRANSACTION 
>> ISOLATION LEVEL READ COMMITTED
>> 2018/11/28 07:20:54 [2070664/5] ListMgr | Logged on to database 
>> 'robinhood_scratch' successfully
>> 2018/11/28 07:20:54 [2070664/5] ListMgr | SQL query: SET SESSION TRANSACTION 
>> ISOLATION LEVEL READ COMMITTED
>> 2018/11/28 07:20:54 [2070664/6] ListMgr | Logged on to database 
>> 'robinhood_scratch' successfully
>> 2018/11/28 07:20:54 [2070664/6] ListMgr | SQL query: SET SESSION TRANSACTION 
>> ISOLATION LEVEL READ COMMITTED
>> 2018/11/28 07:20:54 [2070664/4] ListMgr | Logged on to database 
>> 'robinhood_scratch' successfully
>> 2018/11/28 07:20:54 [2070664/4] ListMgr | SQL query: SET SESSION TRANSACTION 
>> ISOLATION LEVEL READ COMMITTED
>> 2018/11/28 07:20:54 [2070664/1] ListMgr | SQL query: SELECT value FROM VARS 
>> WHERE varname='CL_LastCommit_MDT0000'
>> 2018/11/28 07:20:54 [2070664/1] ListMgr | SQL query: SELECT value FROM VARS 
>> WHERE varname='ChangelogLastCommit_MDT0000'
>> 2018/11/28 07:20:54 [2070664/1] ChangeLog | Opening chglog for 
>> scratch-MDT0000 (start_rec=0)
>> 2018/11/28 07:20:54 [2070664/1] ChangeLog | ERROR -25 opening changelog for 
>> MDT 'scratch-MDT0000': Inappropriate ioctl for device
>> 2018/11/28 07:20:54 [2070664/1] Main | Error 25 initializing ChangeLog Reader
>> ----------------------------------------------------------------------------------
>> 
>> 
>> Thanks,
>> Lorand Szentannai
>> 
>> _______________________________________________
>> robinhood-support mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/robinhood-support
> 
> 



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