Access to project.eecs does not appear to have been affected.
Staff are investigating the cause. The likely culprit are slowdowns from a new backup combined with replication.
The symptoms disappeared at 9:30am on Tuesday, Sep 09. More should be known about the root cause by 9am Wednesday.
UPDATE
[2008-09-10 09:20:30 | Lars Rohrbach]
Access to files on home.eecs was reported to be slow again this morning, but not quite as slow as yesterday morning.
The issue is still under investigation.
UPDATE
[2008-09-12 09:22:57 | Vadim Kogan]
There was an unexpected performance degradation, caused by the interaction of nearstore replication and tape backup mechanism. A modified nearstore replication mechanism is in place now, and appears to successfully mitigate the performance issues.
UPDATE
[2008-09-22 10:23:43 | Lars Rohrbach]
Some particular slowness with our fileservers (both home.eecs and project.eecs) was noted on the morning of Thursday, September 18. Beginning Friday, and continuing throughout the weekend,
the department file servers were particularly slow. As of about 2am this morning, things should be back to normal (for the time being).
Staff are continuing to investigate the periodic sluggishness. We are aware that such slow response time from the file servers is unacceptable for normal operation, and will ensure that a permanent solution is achieved.
UPDATE
[2008-10-21 13:14:55 | Vadim Kogan]
This incident has been resolved.
Suboptimal SCSI/SAN-related settings have been adjusted and thoroughly
tested over the last several weeks. As of now this issue is considered
resolved.
Resolved as of 2008-10-21 11:45:00