Hi,
I'm working in a zfs_log monitor, mi idea is to create a backup fileserver, at
first place the source server log each zfs syscall and then another server
takes them and replicate the information copying each diference (via NFS),
My problem is that some transactions don't appear in the log, i've been reading
a lot about it thinking about "drops" , then i changed the swhitchrate and the
buffersize but they didn't work.
i leave you mi d scritp:
Tanks!
#!/usr/sbin/dtrace -s
#pragma D option bufsize=10m
#pragma D option switchrate=20hz
# pragma D option quiet
zfs_mkdir:entry
{
self->ts = timestamp;
self->filepath = args[0]->v_path;
self->dirname = args[1];
self->perms = args[2]->va_mode;
}
zfs_mkdir:return
/self->filepath && self->ts && args[1] == 0/
{
printf("%s\t%s\t%d\n", probefunc, stringof(self->filepath), timestamp -
self->ts);
self->filepath = 0;
self->dirname = 0;
self->ts = 0;
self->perms = 0;
}
zfs_write:entry,
zfs_read:entry
{
self->ts = timestamp;
self->filepath = args[0]->v_path;
}
zfs_write:return,
zfs_read:return
/self->filepath && self->ts && args[1] == 0/
{
printf("%s\t%s\t%d\n", probefunc, stringof(self->filepath),timestamp );
self->filepath = 0;
self->ts = 0;
}
zfs_create:entry
{
self->ts = timestamp;
self->filepath = args[0]->v_path;
self->filename = args[1];
self->perms = args[2]->va_mode;
}
zfs_create:return
/self->ts && self->filepath && self->filename && self->perms && args[1] == 0/
{
printf("%s\t%s/%s\t%o\t%d\n", probefunc, stringof(self->filepath),
stringof(self->filename), self->perms,timestamp);
self->filepath = 0;
self->filename = 0;
self->ts = 0;
self->perms = 0;
}
zfs_rmdir:entry
{
self->ts = timestamp;
self->filepath = args[0]->v_path;
self->dirname = args[1];
}
zfs_rmdir:return
/self->filepath && self->dirname && self->ts && args[1] == 0/
{
printf("%s\t%s/%s\t%d\n", probefunc, stringof(self->filepath),
stringof(self->dirname), timestamp);
self->filepath = 0;
self->dirname = 0;
self->ts = 0;
}
zfs_remove:entry
{
self->ts = timestamp;
self->filepath = args[0]->v_path;
self->filename = args[1];
}
zfs_remove:return
/self->filepath && self->ts && self->filename && args[1] == 0/
{
printf("%s\t%s/%s\t%d\n", probefunc, stringof(self->filepath),
stringof(self->filename), timestamp);
self->filepath = 0;
self->filename = 0;
self->ts = 0;
}
zfs_rename:entry
{
self->ts = timestamp;
self->filepathsource = args[0]->v_path;
self->filenamesource = args[1];
self->filepathdest = args[2]->v_path;
self->filenamedest = args[3];
}
zfs_rename:return
/self->ts && self->filepathsource && self->filenamesource && self->filepathdest
&& self->filenamedest && args[1] == 0/
{
printf("%s\t%s/%s\t%s/%s\t%d\n", probefunc, stringof(self->filepathsource),
stringof(self->filenamesource),stringof(self->filepathdest),
stringof(self->filenamedest), timestamp );
self->filepathsource = 0;
self->filenamesource = 0;
self->filepathdest = 0;
self->filenamedest = 0;
self->ts = 0;
}
zfs_symlink:entry
{
self->ts = timestamp;
self->filepathdest = args[0]->v_path;
self->filenamedest = args[1];
self->linkname = args[3];
self->perms = args[2]->va_mode;
}
zfs_symlink:return
/self->filepathdest&& self->ts && self->filenamedest && self->linkname &&
args[1] == 0/
{
printf("%s\t%s\t%s/%s\t%o\t%d\n", probefunc, stringof(self->linkname),
stringof(self->filepathdest), stringof(self->filenamedest),
self->perms,timestamp );
self->filepathsdest= 0;
self->filenamesdest= 0;
self->flinkname= 0;
self->ts = 0;
self->perms = 0;
}
zfs_link:entry
{
self->ts = timestamp;
self->filepathdest = args[0]->v_path;
self->filenamedest = args[2];
self->filenamesource = args[1]->v_path;
}
zfs_link:return
/self->ts && self->filepathdest && self->filenamedest && self->filenamesource
&& args[1] == 0/
{
printf("%s\t%s\t%s/%s\t%d\n", probefunc,
stringof(self->filenamesource),stringof(self->filepathdest),
stringof(self->filenamedest), timestamp );
self->filepathdest = 0;
self->filenamesource = 0;
self->filenamesource = 0;
self->ts = 0;
}
zfs_setattr:entry
{
self->ts = timestamp;
self->fileid = args[0]->v_path;
}
zfs_setattr:return
/self->ts && self->fileid && args[1] == 0/
{
printf("%s\t%s\t%d\n", probefunc, stringof(self->fileid), timestamp );
self->fileid = 0;
self->ts = 0;
}
zfs_readdir:entry
{
self->ts = timestamp;
self->fileid = args[0]->v_path;
}
zfs_readdir:return
/self->ts && self->fileid && args[1] == 0/
{
printf("%s\t%s\t%d\n", probefunc, stringof(self->fileid), timestamp);
self->fileid = 0;
self->ts = 0;
}
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