On Tue, Mar 29, 2022 at 10:58:49AM -0400, F Bax wrote:
> I used rsync to copy files.
> sudo rsync -anv --delete /mnt/wd1l/ /mnt/wd2l/
> reports no changes required (runtime under 3 minutes).
> sudo diff -r /mnt/wd1l/ /mnt/wd2l/
> reports no difference (runtime 10 hours)
>
> $ sudo df -i /mnt/wd1l/ /mnt/wd2l/
> Filesystem 512-blocks Used Avail Capacity iused ifree %iused
> Mounted on
> /dev/wd1l 2138940784 1997329632 34664128 98% 483707 33313411 1%
> /mnt/wd1l
> /dev/wd2l 2138951776 2033043696 -1039504 100% 483707 33313411 1%
> /mnt/wd2l
Ok, then it could be an FFS1 vs FFS2 thing. FFS2 has a larger
meta-data overhead due to its larger inodes.
Check
# dumpfs /dev/rwd1l | head -1
# dumpfs /dev/rwd2l | head -1
-Otto
>
> On Tue, Mar 29, 2022 at 10:49 AM F Bax <fbax...@gmail.com> wrote:
>
> > I used rsync to copy files. df -i reports 483707 inodes used for both
> > partitions.
> > sudo rsync -anv --delete /mnt/wd1l/ /mnt/wd2l/
> > reports no changes required (runtime under 3 minutes).
> > sudo diff -r /mnt/wd1l/ /mnt/wd2l/
> > reports no difference (runtime 10 hours)
> >
> > On Tue, Mar 29, 2022 at 10:39 AM Otto Moerbeek <o...@drijf.net> wrote:
> >
> >> On Tue, Mar 29, 2022 at 10:25:34AM -0400, F Bax wrote:
> >>
> >> > I copied all files from /mnt/wd1l to /mnt/wd2l
> >> >
> >> > wd2l is slightly larger than wd1l; yet wd2l is full!
> >> >
> >> > $ df -h /mnt/wd1l /mnt/wd2l
> >> > Filesystem Size Used Avail Capacity Mounted on
> >> > /dev/wd1l 1020G 952G 16.5G 98% /mnt/wd1l
> >> > /dev/wd2l 1020G 969G -508M 100% /mnt/wd2l
> >>
> >> How did you copy? Some forms of copy will cause hardlinked files to be
> >> separate files on the destination. df -i will tell how many inodes you
> >> have used. If wd2l has more inodes in use, I bet it's that.
> >>
> >> -Otto
> >>
> >> >
> >> > Output from disklabel is almost identical:
> >> >
> >> > type: SCSI
> >> > disk: SCSI disk
> >> > label: WDC WD2000FYYZ-0
> >> > flags:
> >> > bytes/sector: 512
> >> > sectors/track: 63
> >> > tracks/cylinder: 255
> >> > sectors/cylinder: 16065
> >> > cylinders: 243201
> >> > total sectors: 3907029168
> >> > rpm: 0
> >> > interleave: 1
> >> > trackskew: 0
> >> > cylinderskew: 0
> >> > headswitch: 0 # microseconds
> >> > track-to-track seek: 3907029168 # microseconds
> >> > drivedata: 0
> >> >
> >> > Difference between wd1 and wd2:
> >> > wd1: interleave: 0
> >> > wd2: interleave: 1
> >> >
> >> > Partition details (A added 'wd1/wd2' to beginning of line:
> >> > # size offset fstype [fsize bsize cpg]
> >> > wd1l: 2147472640 525486208 4.2BSD 8192 65536 1
> >> > wd2l: 2147483647 63 4.2BSD 8192 65536 1
> >> >
> >> > Why is wd2l full?
> >>
> >
