[LU-110] Allow the use of a 2.0 MDS on a filesystem with a 1.8 disk format

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.2.0, Lustre 2.1.1
• Affects Version/s: Lustre 2.0.0, Lustre 2.1.0
• Severity: 3

Epic

MDS config quota

• Assignee: Niu Yawei (Inactive)
• Reporter: Nikitas Angelinas

Description

Version 1.8 uses a tunable named "mdt.quota_type" in order to store quota parameters in config, while version 2.x has a tunable named "mdd.quota_type" for the same purpose. This introduces incompatibility when trying to run a 2.x Lustre instance on top of a filesystem with a 1.8 disk format.

Issue Links

• Trackbacks: Changelog 2.1 Changes from version 2.1.0 to version 2.1.1 Server support for kernels: 2.6.18274.12.1.el5 (RHEL5) 2.6.32220.el6 (RHEL6) Client support for unpatched kernels: 2.6.18274.12.1.el5 (RHEL5) 2.6.32220.el6 (RHEL6) 2.6.32.360....
• Trackbacks: Changelog 2.2 version 2.2.0 Support for networks: o2iblnd OFED 1.5.4 Server support for kernels: 2.6.32220.4.2.el6 (RHEL6) Client support for unpatched kernels: 2.6.18274.18.1.el5 (RHEL5) 2.6.32220.4.2.el6 (RHEL6) 2.6.32.360....

Comments

[Build Master (Inactive)]

Integrated in lustre-master » x86_64,client,el5,ofa #287
LU-110 Recognize old mdt.quota_type param

Oleg Drokin : 398fd6e9da8c845efb45bdc6b0af2c8440219d7e
Files :

• lustre/mdt/mdt_handler.c

[Build Master (Inactive)]

Integrated in lustre-master » x86_64,client,sles11,inkernel #287
LU-110 Recognize old mdt.quota_type param

Oleg Drokin : 398fd6e9da8c845efb45bdc6b0af2c8440219d7e
Files :

• lustre/mdt/mdt_handler.c

[Build Master (Inactive)]

Integrated in lustre-master » i686,server,el6,inkernel #287
LU-110 Recognize old mdt.quota_type param

Oleg Drokin : 398fd6e9da8c845efb45bdc6b0af2c8440219d7e
Files :

• lustre/mdt/mdt_handler.c

[Build Master (Inactive)]

Integrated in lustre-master » x86_64,server,el5,inkernel #287
LU-110 Recognize old mdt.quota_type param

Oleg Drokin : 398fd6e9da8c845efb45bdc6b0af2c8440219d7e
Files :

• lustre/mdt/mdt_handler.c

[Build Master (Inactive)]

Integrated in lustre-master » x86_64,client,el6,inkernel #287
LU-110 Recognize old mdt.quota_type param

Oleg Drokin : 398fd6e9da8c845efb45bdc6b0af2c8440219d7e
Files :

• lustre/mdt/mdt_handler.c

[Build Master (Inactive)]

Integrated in lustre-master » x86_64,server,el5,ofa #287
LU-110 Recognize old mdt.quota_type param

Oleg Drokin : 398fd6e9da8c845efb45bdc6b0af2c8440219d7e
Files :

• lustre/mdt/mdt_handler.c

[Niu Yawei (Inactive)]

http://review.whamcloud.com/#change,354

[Build Master (Inactive)]

Integrated in reviews-centos5 #536
LU-110 Recognize old mdt.quota_type param

Niu Yawei : 4e57da69d1159bd2d2bec9e12cc724f8044443d2
Files :

• lustre/mdt/mdt_handler.c

[Build Master (Inactive)]

Integrated in reviews-centos5 #502
LU-110 Old-style quota type handling fix

Vitaly Fertman : b4f6461fcdbd6ca001d48653075601be66432da3
Files :

• lustre/mdt/mdt_lproc.c
• lustre/mdd/mdd_lproc.c

[Nikitas Angelinas]

Hi Niu and Peter,

Please find attached a patch for the issue; hopefully the formatting of the file has been left intact by the upload process.

Thanks to Robert Read for providing us with the necessary Gerrit-related information; we should be sorting out our upstreaming methodology soon hopefully.

Kind Regards,
Nikitas

[Peter Jones]

Niu

I think that we need to do the former. Yes, Xyratex have a patch but they are currently blocked on providing it until we can give Nikitas some guidance about how to supply the patch. I suggest that you create a repro case as a first step and then see whether the patch is available by then. If not it probably would not be too much effort to recreate it - I gather from Nathan (of Xx) that it is only a few lines of code (though of course it would be preferable to reuse the existing patch)

Peter