hello!I've accidently ran iostat while write to fuse filesystem was in progress and was shocked when I've seen that, according to iostat, each and any write op to fuse fs leads to one read op. i.e. if I have ~100 write op/s to fuse then I have exatcly ~100 read op/s from the same fuse. Is this a bug in iostat or in fuse?
da2: <SanDisk Cruzer Blade 1.00> Removable Direct Access SPC-4 SCSI device
# mount.exfat /dev/da2s1 /mnt/1
FUSE exfat 1.2.4
# dd if=/dev/zero of=/mnt/1/test1280m.fil bs=1m count=1280
^C179+0 records in
178+0 records out
186646528 bytes transferred in 29.778425 secs (6267844 bytes/sec)
# iostat -xzdw10 da2
extended device statistics
device r/s w/s kr/s kw/s ms/r ms/w ms/o ms/t qlen
%b
da2 79 79 5068.7 5075.1 3 11 0 7 1 78
extended device statistics
device r/s w/s kr/s kw/s ms/r ms/w ms/o ms/t qlen
%b
da2 99 99 6373.4 6392.5 3 11 0 7 0 95
extended device statistics
device r/s w/s kr/s kw/s ms/r ms/w ms/o ms/t qlen
%b
da2 95 95 6118.5 6092.9 3 11 0 7 2 95
extended device statistics
device r/s w/s kr/s kw/s ms/r ms/w ms/o ms/t qlen
%b
da2 12 12 793.6 793.6 3 14 0 8 0 15 the same can be seen if I use ntfs-3g no other app is using da2. -- SY, Marat
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