[Gluster-devel] Release 3.10 testing update: Older client unable to mount post upgrade

[Poornima Gurusiddaiah]

I think this is because of the commit 96fb3562. In this 3 options, which were
already in readdir-ahead but not exposed as volume set, were exposed as
volume set options(allowed to be set with op-version GD_OP_VERSION_3_9_1):
rda-request-size, rda-low-wmark, rda-cache-limit, rda-high-wmark 
Along with this, the type of rda-request-size was changed from INT to SIZE_t.
I think the new volfiles contain 'rda-request-size 128KB' but the old client
can only understand INT.

This cannot be documented and left, it has to be fixed. One way would be to
retain the type of rda-request-size as INT, but may be there is a better way
need to check.

Regards,
Poornima

----- Original Message -----
> From: "Shyam" <srangana at redhat.com>
> To: "Gluster Devel" <gluster-devel at gluster.org>, "Raghavendra Gowdappa" <rgowdapp at redhat.com>, "Poornima
> Gurusiddaiah" <pgurusid at redhat.com>, "Atin Mukherjee" <amukherj at redhat.com>
> Sent: Friday, February 17, 2017 5:36:07 AM
> Subject: Release 3.10 testing update: Older client unable to mount post upgrade
> 
> Hi,
> 
> Post upgrading brick nodes from 3.8.8 to 3.10rc0 (sort of), I tried a to
> mount from a 3.8.8 client (as I had not upgraded the client till then).
> The mount failed with the following in the logs (at the end of the mail).
> 
> The issue was that I did an rpm -U to get the latest version, so all vol
> files were upgraded (from the spec file, glusterd --xlator-option
> *.upgrade=on -N), this resulted in client vol files being upgraded as
> well, and now the client does not understand the option as below,
> 
> 0-testvolssd-readdir-ahead: invalid number format "128KB" in option
> "rda-request-size"
> 0-testvolssd-readdir-ahead: validate of rda-request-size returned -1
> 0-testvolssd-readdir-ahead: validation failed: invalid number format
> "128KB" in option "rda-request-size"
> 
> So is this a bug? Or something to document? or, am I missing something?
> Poornima/Du/Atin?
> 
> Thanks,
> Shyam
> 
> ::Full logs::
> # mount -t glusterfs 10.21.76.10:/testvolssd /mnt/testvol1
> Mount failed. Please check the log file for more details.
> 
> # cat /var/log/glusterfs/mnt-testvol1.log
> [2017-02-16 17:37:12.703983] I [MSGID: 100030] [glusterfsd.c:2454:main]
> 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.8.8
> (args: /usr/sbin/glusterfs --volfile-server=10.21.76.10
> --volfile-id=/testvolssd /mnt/testvol1)
> [2017-02-16 17:37:12.726213] I [MSGID: 101190]
> [event-epoll.c:628:event_dispatch_epoll_worker] 0-epoll: Started thread
> with index 1
> [2017-02-16 17:37:12.744187] E [MSGID: 101002]
> [options.c:69:xlator_option_validate_int] 0-testvolssd-readdir-ahead:
> invalid number format "128KB" in option "rda-request-size"
> [2017-02-16 17:37:12.744221] W [MSGID: 101029]
> [options.c:945:xl_opt_validate] 0-testvolssd-readdir-ahead: validate of
> rda-request-size returned -1
> [2017-02-16 17:37:12.744235] E [MSGID: 101090]
> [graph.c:301:glusterfs_graph_validate_options]
> 0-testvolssd-readdir-ahead: validation failed: invalid number format
> "128KB" in option "rda-request-size"
> [2017-02-16 17:37:12.744248] E [MSGID: 101090]
> [graph.c:665:glusterfs_graph_activate] 0-graph: validate options failed
> [2017-02-16 17:37:12.753368] W [glusterfsd.c:1327:cleanup_and_exit]
> (-->/usr/sbin/glusterfs(mgmt_getspec_cbk+0x3c1) [0x7fbf4eb38eb1]
> -->/usr/sbin/glusterfs(glusterfs_process_volfp+0x172) [0x7fbf4eb335d2]
> -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7fbf4eb32b4b] ) 0-:
> received signum (1), shutting down
> [2017-02-16 17:37:12.753420] I [fuse-bridge.c:5794:fini] 0-fuse:
> Unmounting '/mnt/testvol1'.
> [2017-02-16 17:37:12.753957] W [glusterfsd.c:1327:cleanup_and_exit]
> (-->/lib64/libpthread.so.0(+0x7dc5) [0x7fbf4d49edc5]
> -->/usr/sbin/glusterfs(glusterfs_sigwaiter+0xe5) [0x7fbf4eb32cd5]
> -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7fbf4eb32b4b] ) 0-:
> received signum (15), shutting down
>