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Subjectsmbfs trace on WfW
Bill,

Welcome to the Twilight Zone! Here is the trace from an iozone run
against WfW with debugging turned on in smbfs/file.c:

Dec 11 07:00:26 cy kernel: smb_newconn: state valid, pid=1398
Dec 11 07:00:35 cy kernel: smb_revalidate_inode: up-to-date, jiffies=4362604, oldtime=4362596
Dec 11 07:00:35 cy last message repeated 2 times
Dec 11 07:00:35 cy kernel: smb_request_ok: rcls=1, err=18 mapped to 0
Dec 11 07:00:35 cy kernel: smb_revalidate_inode: up-to-date, jiffies=4362611, oldtime=4362611
Dec 11 07:00:35 cy kernel: smb_revalidate_inode: up-to-date, jiffies=4362611, oldtime=4362611
Dec 11 07:00:38 cy kernel: smb_file_permission: mode=81b6, mask=0
Dec 11 07:00:38 cy kernel: smb_file_open: opening bench/iozone.tmp, d_count=1
Dec 11 07:00:38 cy kernel: smb_file_write: file bench/iozone.tmp, count=512@0
Dec 11 07:00:38 cy kernel: smb_writepage_sync: file bench/iozone.tmp, count=512@0, wsize=2868
Dec 11 07:00:38 cy kernel: smb_file_write: pos=512, size=512, mtime=881841638, atime=881841638
Dec 11 07:00:38 cy kernel: smb_file_write: file bench/iozone.tmp, count=512@512
Dec 11 07:00:38 cy kernel: smb_writepage_sync: file bench/iozone.tmp, count=512@512, wsize=2868
Dec 11 07:00:38 cy kernel: smb_file_write: pos=1024, size=1024, mtime=881841638, atime=881841638
Dec 11 07:00:38 cy kernel: smb_file_write: file bench/iozone.tmp, count=512@1024
Dec 11 07:00:38 cy kernel: smb_writepage_sync: file bench/iozone.tmp, count=512@1024, wsize=2868
Dec 11 07:00:38 cy kernel: smb_file_write: pos=1536, size=1536, mtime=881841638, atime=881841638
Dec 11 07:00:38 cy kernel: smb_file_write: file bench/iozone.tmp, count=512@1536
Dec 11 07:00:38 cy kernel: smb_writepage_sync: file bench/iozone.tmp, count=512@1536, wsize=2868
.
.
.

Dec 11 07:00:45 cy kernel: smb_file_write: pos=108032, size=108032, mtime=881841640, atime=881841640
Dec 11 07:00:45 cy kernel: smb_file_write: file bench/iozone.tmp, count=512@108032
Dec 11 07:00:46 cy kernel: smb_writepage_sync: file bench/iozone.tmp, count=512@108032, wsize=2868
Dec 11 07:00:46 cy kernel: smb_file_write: pos=108544, size=108544, mtime=881841640, atime=881841640

(subsequent iozone auto cycle omitted)

You will note the glaring absence of any log entries pertaining to
smb_read operations <g>. Nonetheless, reads are occurring (albeit at
slower rates than would be expected with cacheing), so where is the data
coming from? BTW, I'm confident that read tracing is operational, as it
does pickup activity from cat-ing existing files on the server.

What would you like to see next?

Steve



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