On Sun, Mar 03, 2024 at 12:14:14PM -0000, beecdadd...@danwin1210.de wrote: > On Sun, March 3, 2024 12:07 pm, Otto Moerbeek wrote: > > On Sun, Mar 03, 2024 at 12:01:12PM -0000, beecdadd...@danwin1210.de > > wrote: > > > > > >> oh okay reserved for root? I ran those commands as root, or you mean > >> something else? I didn't know overhead was that big.. so this is okay, > >> then? thanks for very fast reply > > > > 3.5G meta data overhead is less than 1.5% of your partition. Not that > > high, I'd say. > > 235-223 is 8G, not 3.5G? > > > Only root processes can write crossing the reserved space limit. The > > disk will than show a Capacity number larger than 100%. > > so root process, not root user? ok > > > Non-root proceses will see failed writes. > > > > > > You can change that 5% by using tunefs, or when doing newfs from the > > start). > > > > -Otto > > newfs from the start? I did newfs from the start? > https://www.openbsd.org/faq/faq14.html#softraidcrypto > is this not what you mean by newfs from the start?
No. He means by specifying the -m option when running newfs(8). See the man page for newfs(8). (You probably don't want to DO that (give non-root processes access to fill up every last free sector of your disk) but you CAN..) Also, by running disklabel and df with the -h option, you get sizes in "human readable format" which doesn't neccessarily give you an accurate understandig of your disks and partitions. The "real" or "underlying" unit is sectors, which you will see if you run df(1) and disklabel(8) without -f. Regards, Erling > > > > >> > >> On Sun, March 3, 2024 11:57 am, Otto Moerbeek wrote: > >> > >>> On Sun, Mar 03, 2024 at 11:48:01AM -0000, beecdadd...@danwin1210.de > >>> wrote: > >>> > >>> > >>> > >>>> > >>>> disklabel -h sd3 shows this > >>>> > >>>> # /dev/rsd3c: > >>>> type: SCSI > >>>> disk: SCSI disk > >>>> label: SR CRYPTO > >>>> duid: some-number > >>>> flags: > >>>> bytes/sector: 512 > >>>> sectors/track: 63 > >>>> tracks/cylinder: 255 > >>>> sectors/cylinder: 16065 > >>>> cylinders: 31130 > >>>> total sectors: 500117600 # total bytes: 238.5G boundstart: 64 > >>>> boundend: 500117600 > >>>> > >>>> > >>>> > >>>> 16 partitions: > >>>> # size offset fstype [fsize bsize cpg] > >>>> c: 238.5G 0 unused > >>>> i: 238.5G 64 4.2BSD 4096 32768 26062 # > >>>> /mnt/extssd > >>>> > >>>> > >>>> > >>>> but df -h shows that sd3i is of size 235G but only 223G is > >>>> available, and the Used space is 4.0k.. SSD is new and I followed > >>>> > >>> > >>> A fileystem has meta data overhead. That space is not avalailable for > >>> user files. Also, by default 5% of available space is reserved for > >>> root only. That fraction is represented in available space. See > >>> newfs(8). > >>> > >>> -Otto > >>> > >>> > >>> > >> > >> > > > >
