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Vishal Kanaujia

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  • fs (Developer, Reporter, 05/25/2016)

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05/19/2017

10:23 AM fs Bug #17468 (Closed): CephFs: IO Pauses for more than a 40 seconds, while running write intensive IOs
Unable to consistently reproduce the bug.

12/07/2016

09:58 AM fs Feature #17835 (In Progress): Enable killpoint tests for multi-mds recovery

11/28/2016

07:03 AM fs Feature #12132 (In Progress): cephfs-data-scan: Cleanup phase
The following xattrs are added to zeroth object:
#define XATTR_CEILING "scan_ceiling"
#define XATTR_MAX_MTIME "...

10/15/2016

08:28 AM fs Bug #17468: CephFs: IO Pauses for more than a 40 seconds, while running write intensive IOs
Further analysis of I/O drop points to correlation of MDS config parameter mds_log_max_segments and I/O drop. Using d...

10/13/2016

12:45 PM fs Bug #17468: CephFs: IO Pauses for more than a 40 seconds, while running write intensive IOs
John, there are two test cases.
1. Load files into file system. We created 900k files of 1k size
2. Run I/O tests s...

10/04/2016

12:38 PM fs Bug #17468: CephFs: IO Pauses for more than a 40 seconds, while running write intensive IOs
1. MDS runs with default configuration.
2. On MDS node, I ran following commands:
# ceph --admin-daemon ceph-md...

10/03/2016

01:42 PM fs Bug #17468 (In Progress): CephFs: IO Pauses for more than a 40 seconds, while running write inten...
01:27 PM fs Bug #17468: CephFs: IO Pauses for more than a 40 seconds, while running write intensive IOs
I collected stack unwind traces in MDS process while no I/O was observed during write ops on cephFS. Stack trace freq...

09/14/2016

07:11 AM fs Bug #17231 (Resolved): CephFS : IOs get terminated while reading/writing on larger files
It was a tool use case problem, unrelated to CephFS. Closing the bug.
07:09 AM fs Bug #17231: CephFS : IOs get terminated while reading/writing on larger files
The problem lied with usage of VDbench. If you have 256 threads, but 10 files, VDBench might fail.
From VDBench us...

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