Details
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Bug
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Resolution: Not a Bug
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Major
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None
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Lustre 1.8.8
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Kernel: 2.6.32-220.el6.x86_64
Lustre: 1.8.8
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3
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8631
Description
When edit a file by emacs or vim and save it, it takes a couple of seconds to close it. This problen is not limited to a specific file, client or OST, and can be reproduced easily at any file or any client. It occurs with root user. There is no error recorded on MDS/OSS/client syslog for it.
We traced the process and got Lustre log. According to the strace, it takes seconds while fsync(). And according to Lustre log of client, mdc_sync() waits for seconds until it recieves the reply. But the log on Lustre MDS does not contain any message about mds_sync().
We do not find any problem of other metadata operations like file creation or direcotry creation. The simple test 'fsync.c' opens, writes to and then fsync a file but it can not reproduce the problem.
Attachments
Activity
Resolution | New: Not a Bug [ 6 ] | |
Status | Original: Open [ 1 ] | New: Resolved [ 5 ] |
Assignee | Original: WC Triage [ wc-triage ] | New: Peter Jones [ pjones ] |
Attachment | Original: MMBK_lustre_debug_20130610.tar.gz [ 13034 ] |
ok - thanks Ihara