Re: [gpfsug-discuss] IO sizes

Hi, the test bench is gpfsperf running on up to 12 clients with 1...64 threads doing sequential reads and writes , file size per gpfsperf process is 12TB (with 6TB I saw caching effects in particular for large thread numbers ...) As I wrote initially: GPFS is issuing nothing but 8MiB IOs to

Re: [gpfsug-discuss] IO sizes

Alex, Metadata will be 4Kib Depending on the filesystem version you will also have subblocks to consider V4 filesystems have 1/32 subblocks, V5 filesystems have 1/1024 subblocks (assuming metadata and data block size is the same) My first question would be is “ Are you sure that Linux OS is

[gpfsug-discuss] IO sizes

Dear all, sorry for asking a question which seems not directly GPFS related: In a setup with 4 NSD servers (old-style, with storage controllers in the back end), 12 clients and 10 Seagate storage systems, I do see in benchmark tests that  just one of the NSD servers does send smaller IO

Re: [gpfsug-discuss] immutable folder

Its not allowing me! Kindest regards, Paul Paul Ward TS Infrastructure Architect Natural History Museum T: 02079426450 E: p.w...@nhm.ac.uk [A picture containing drawing Description automatically generated] From: gpfsug-discuss-boun...@spectrumscale.org On Behalf Of

Re: [gpfsug-discuss] immutable folder

Your directory is under a fileset with non-compliant iam mode. With fileset in that mode, it follows snapLock protocol - it disallows changing subdir to immutable, but allows changing subdir to mutable. Regards, The Spectrum Scale (GPFS) team

Re: [gpfsug-discuss] How to do multiple mounts via GPFS

I've ran into the same problem some time ago. What worked for me was this shell script I run as a @reboot cronjob: #!/bin/bash while [ ! -d /gpfs1/home ] do sleep 5 done mount --bind /gpfs1/home /home -Ursprüngliche Nachricht- Von: gpfsug-discuss-boun...@spectrumscale.org

Re: [gpfsug-discuss] immutable folder

5.1.1-1 Kindest regards, Paul Paul Ward TS Infrastructure Architect Natural History Museum T: 02079426450 E: p.w...@nhm.ac.uk [A picture containing drawing Description automatically generated] From: gpfsug-discuss-boun...@spectrumscale.org On Behalf Of Frederick

Re: [gpfsug-discuss] immutable folder

Paul, what version of Spectrum Scale are you using? Fred___Fred Stock | Spectrum Scale Development Advocacy | 720-430-8821sto...@us.ibm.com     - Original message -From: "Paul Ward" Sent by: gpfsug-discuss-boun...@spectrumscale.orgTo:

Re: [gpfsug-discuss] immutable folder

Thanks, I couldn't recreate that test: # mkdir "it/stu'pid name" mkdir: cannot create directory 'it/stu'pid name': No such file or directory [Removing the / ] # mkdir "itstu'pid name" # mmchattr -i yes itstu\'pid\ name/ itstu'pid name/: Change immutable flag failed: Invalid argument. Can not

Re: [gpfsug-discuss] immutable folder

While the apostrophe is evil it's not the problem: root@it-gti-02 test1]# mkdir "it/stu'pid name" [root@it-gti-02 test1]# mmchattr -i yes it/stu\'pid\ name [root@it-gti-02 test1]# mmchattr -i no it/stu\'pid\ name > From: "Paul Ward" > To: "gpfsug main discussion list" > Sent: Wednesday, 23

Re: [gpfsug-discuss] immutable folder

Its not a fileset, its just a folder, well a subfolder… [filesystem/[fileset]/share/data/iac/[user] 2004-2014/Laboratory Impact experiments/LGG shots/Kent LGG/Kent aerogel LGG shots/Lizardite in aerogel/Nick Foster's sample It’s the “Nick Foster's sample” folder I want to delete, but it says