Do any processes have those files open? Did you have any hard links to
those files from other names?

The disk space cannot be removed until all references to those files
are removed.

-- 
Raul

On Tue, Sep 27, 2016 at 2:24 AM, Marco Prause <marco-obsdm...@prause.eu> wrote:
> Hi all,
>
> I met an interesting problem while deleting files that makes me curious.
>
> After deleting two files for preparing an update in a flashrd-setup
> (openbsd.vnd + bsd) I would have expected the ~1,2 GB beeing freed.
>
> The files are gone - so far so good, but the disc space is not free.
>
> I know this behaviour, if a process is still sitting on the file, but
> with fstat I can't see any process or open file handler.
>
> Now I'm just curious if I miss something and probably I just need a bit
> more coffee ;-)
>
>
> # df -h
> Filesystem     Size    Used   Avail Capacity  Mounted on
> /dev/rd0a      1.8M    1.4M    419K    77%    /
> /dev/sd0a      1.8G    872M    878M    50%    /flash
> /dev/vnd0e    15.4M    5.0M   10.3M    32%    /etc
> /dev/vnd0f    42.1M   14.6M   27.0M    35%    /sbin
> /dev/vnd0a    48.3M    6.0K   47.8M     0%    /root
> /dev/vnd0d    16.4M    5.8M   10.4M    36%    /bin
> /dev/vnd0g     1.1G    735M    347M    68%    /usr
> tmpfs         64.0M   61.5M    2.5M    96%    /var
> tmpfs         50.0M    4.0K   50.0M     0%    /home
> tmpfs         16.0M    4.0K   16.0M     0%    /tmp
> /dev/sd0d     10.9G    616M    9.7G     6%    /data
> #
> # du -hs /flash/
> 68.9M   /flash/
> #
> # mount
> /dev/rd0a on / type ffs (local)
> /dev/sd0a on /flash type ffs (local, noatime, nodev, nosuid)
> /dev/vnd0e on /etc type ffs (local, noatime, nodev, nosuid, read-only)
> /dev/vnd0f on /sbin type ffs (local, noatime, nodev, read-only)
> /dev/vnd0a on /root type ffs (local, noatime, nodev, nosuid, read-only)
> /dev/vnd0d on /bin type ffs (local, noatime, nodev, nosuid, read-only)
> /dev/vnd0g on /usr type ffs (local, noatime, nodev, read-only)
> tmpfs on /var type tmpfs (local, noatime, nodev, nosuid)
> tmpfs on /home type tmpfs (local, noatime, nodev, nosuid)
> tmpfs on /tmp type tmpfs (local, noatime, nodev, nosuid)
> /dev/sd0d on /data type ffs (local)
> #
> # iostat 1 10
>       tty              sd0               rd0               sd1
>     sd2             cpu
>  tin tout  KB/t  t/s  MB/s   KB/t  t/s  MB/s   KB/t  t/s  MB/s   KB/t
> t/s  MB/s  us ni sy in id
>    0    1 15.28    0  0.00   0.00    0  0.00   6.09    0  0.00   0.00
> 0  0.00   0  0  1  1 98
>    0  294  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   0  0  1  3 96
>    0   97  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   0  0  2  3 95
>    0   97  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   0  0  1  1 98
>    0   98  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   0  0  0  0100
>    0   96  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   1  0  1  2 96
>    0   98  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   0  0  0  1 99
>    0   97  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   0  0  2  1 97
>    0   97  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   0  0  0  1 99
>    0   96  0.00    0  0.00   0.00    0  0.00   0.00    0  0.00   0.00
> 0  0.00   2  0  0  3 95
> #
> # uname -a
>
> OpenBSD gw.idst 5.9 FLASHRD.MP#2 amd64
> #
> # dmesg
>
> OpenBSD 5.9-stable (FLASHRD.MP) #2: Wed Aug 17 17:48:07 CEST 2016
>
> r...@openbsd-59-amd64-build.my.domain:/usr/src/sys/arch/amd64/compile/FLASHRD.MP
> real mem = 2098520064 (2001MB)
> avail mem = 2028883968 (1934MB)
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 2.7 @ 0x7e16d820 (6 entries)
> bios0: vendor coreboot version "SageBios_PCEngines_APU-45" date 04/05/2014
> bios0: PC Engines APU
> acpi0 at bios0: rev 0
> acpi0: sleep states S0 S1 S3 S4 S5
> acpi0: tables DSDT FACP SPCR HPET APIC HEST SSDT SSDT SSDT
> acpi0: wakeup devices AGPB(S4) HDMI(S4) PBR4(S4) PBR5(S4) PBR6(S4)
> PBR7(S4) PE20(S4) PE21(S4) PE22(S4) PE23(S4) PIBR(S4) UOH1(S3) UOH2(S3)
> UOH3(S3) UOH4(S3) UOH5(S3) [...]
> acpitimer0 at acpi0: 3579545 Hz, 32 bits
> acpihpet0 at acpi0: 14318180 Hz
> acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: AMD G-T40E Processor, 1000.13 MHz
> cpu0:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,MWAIT,SSSE3,CX16,POPCNT,NXE,MMXX,FFXSR,PAGE1GB,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,IBS,SKINIT,ITSC
> cpu0: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 512KB
> 64b/line 16-way L2 cache
> cpu0: 8 4MB entries fully associative
> cpu0: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
> cpu0: apic clock running at 199MHz
> cpu0: mwait min=64, max=64, IBE
> cpu1 at mainbus0: apid 1 (application processor)
> cpu1: AMD G-T40E Processor, 1000.00 MHz
> cpu1:
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,MWAIT,SSSE3,CX16,POPCNT,NXE,MMXX,FFXSR,PAGE1GB,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,IBS,SKINIT,ITSC
> cpu1: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 512KB
> 64b/line 16-way L2 cache
> cpu1: 8 4MB entries fully associative
> cpu1: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative
> cpu1: smt 0, core 1, package 0
> ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 21, 24 pins
> acpiprt0 at acpi0: bus -1 (AGPB)
> acpiprt1 at acpi0: bus -1 (HDMI)
> acpiprt2 at acpi0: bus 1 (PBR4)
> acpiprt3 at acpi0: bus 2 (PBR5)
> acpiprt4 at acpi0: bus 3 (PBR6)
> acpiprt5 at acpi0: bus -1 (PBR7)
> acpiprt6 at acpi0: bus 5 (PE20)
> acpiprt7 at acpi0: bus -1 (PE21)
> acpiprt8 at acpi0: bus -1 (PE22)
> acpiprt9 at acpi0: bus -1 (PE23)
> acpiprt10 at acpi0: bus 0 (PCI0)
> acpiprt11 at acpi0: bus 4 (PIBR)
> acpicpu0 at acpi0: C2(0@100 io@0x841), C1(@1 halt!), PSS
> acpicpu1 at acpi0: C2(0@100 io@0x841), C1(@1 halt!), PSS
> acpibtn0 at acpi0: PWRB
> cpu0: 1000 MHz: speeds: 1000 800 MHz
> pci0 at mainbus0 bus 0
> pchb0 at pci0 dev 0 function 0 "AMD AMD64 14h Host" rev 0x00
> ppb0 at pci0 dev 4 function 0 "AMD AMD64 14h PCIE" rev 0x00: msi
> pci1 at ppb0 bus 1
> re0 at pci1 dev 0 function 0 "Realtek 8168" rev 0x06: RTL8168E/8111E
> (0x2c00), msi, address 00:0d:b9:3c:b2:74
> rgephy0 at re0 phy 7: RTL8169S/8110S/8211 PHY, rev. 4
> ppb1 at pci0 dev 5 function 0 "AMD AMD64 14h PCIE" rev 0x00: msi
> pci2 at ppb1 bus 2
> re1 at pci2 dev 0 function 0 "Realtek 8168" rev 0x06: RTL8168E/8111E
> (0x2c00), msi, address 00:0d:b9:3c:b2:75
> rgephy1 at re1 phy 7: RTL8169S/8110S/8211 PHY, rev. 4
> ppb2 at pci0 dev 6 function 0 "AMD AMD64 14h PCIE" rev 0x00: msi
> pci3 at ppb2 bus 3
> re2 at pci3 dev 0 function 0 "Realtek 8168" rev 0x06: RTL8168E/8111E
> (0x2c00), msi, address 00:0d:b9:3c:b2:76
> rgephy2 at re2 phy 7: RTL8169S/8110S/8211 PHY, rev. 4
> ahci0 at pci0 dev 17 function 0 "ATI SBx00 SATA" rev 0x40: apic 2 int
> 19, AHCI 1.2
> ahci0: port 0: 6.0Gb/s
> scsibus1 at ahci0: 32 targets
> sd0 at scsibus1 targ 0 lun 0: <ATA, SATA SSD, S9FM> SCSI3 0/direct fixed
> t10.ATA_SATA_SSD_81B5074C1B6500077131
> sd0: 15272MB, 512 bytes/sector, 31277232 sectors, thin
> ohci0 at pci0 dev 18 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18,
> version 1.0, legacy support
> ehci0 at pci0 dev 18 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
> usb0 at ehci0: USB revision 2.0
> uhub0 at usb0 "ATI EHCI root hub" rev 2.00/1.00 addr 1
> ohci1 at pci0 dev 19 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18,
> version 1.0, legacy support
> ehci1 at pci0 dev 19 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
> usb1 at ehci1: USB revision 2.0
> uhub1 at usb1 "ATI EHCI root hub" rev 2.00/1.00 addr 1
> piixpm0 at pci0 dev 20 function 0 "ATI SBx00 SMBus" rev 0x42: polling
> iic0 at piixpm0
> pcib0 at pci0 dev 20 function 3 "ATI SB700 ISA" rev 0x40
> ppb3 at pci0 dev 20 function 4 "ATI SB600 PCI" rev 0x40
> pci4 at ppb3 bus 4
> ohci2 at pci0 dev 20 function 5 "ATI SB700 USB" rev 0x00: apic 2 int 18,
> version 1.0, legacy support
> ppb4 at pci0 dev 21 function 0 "ATI SB800 PCIE" rev 0x00
> pci5 at ppb4 bus 5
> ohci3 at pci0 dev 22 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18,
> version 1.0, legacy support
> ehci2 at pci0 dev 22 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
> usb2 at ehci2: USB revision 2.0
> uhub2 at usb2 "ATI EHCI root hub" rev 2.00/1.00 addr 1
> pchb1 at pci0 dev 24 function 0 "AMD AMD64 14h Link Cfg" rev 0x43
> pchb2 at pci0 dev 24 function 1 "AMD AMD64 14h Address Map" rev 0x00
> pchb3 at pci0 dev 24 function 2 "AMD AMD64 14h DRAM Cfg" rev 0x00
> km0 at pci0 dev 24 function 3 "AMD AMD64 14h Misc Cfg" rev 0x00
> pchb4 at pci0 dev 24 function 4 "AMD AMD64 14h CPU Power" rev 0x00
> pchb5 at pci0 dev 24 function 5 "AMD AMD64 14h Reserved" rev 0x00
> pchb6 at pci0 dev 24 function 6 "AMD AMD64 14h NB Power" rev 0x00
> pchb7 at pci0 dev 24 function 7 "AMD AMD64 14h Reserved" rev 0x00
> usb3 at ohci0: USB revision 1.0
> uhub3 at usb3 "ATI OHCI root hub" rev 1.00/1.00 addr 1
> usb4 at ohci1: USB revision 1.0
> uhub4 at usb4 "ATI OHCI root hub" rev 1.00/1.00 addr 1
> isa0 at pcib0
> com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> com0: console
> com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
> pcppi0 at isa0 port 0x61
> spkr0 at pcppi0
> lpt0 at isa0 port 0x378/4 irq 7
> wbsio0 at isa0 port 0x2e/2: NCT5104D rev 0x52
> usb5 at ohci2: USB revision 1.0
> uhub5 at usb5 "ATI OHCI root hub" rev 1.00/1.00 addr 1
> usb6 at ohci3: USB revision 1.0
> uhub6 at usb6 "ATI OHCI root hub" rev 1.00/1.00 addr 1
> umass0 at uhub0 port 5 configuration 1 interface 0 "TOSHIBA External USB
> 3.0" rev 2.10/0.00 addr 2
> umass0: using SCSI over Bulk-Only
> scsibus2 at umass0: 2 targets, initiator 0
> sd1 at scsibus2 targ 1 lun 0: <TOSHIBA, External USB 3.0, 0> SCSI4
> 0/direct fixed serial.0480a00e31206004642F
> sd1: 476940MB, 512 bytes/sector, 976773168 sectors
> umass1 at uhub2 port 1 configuration 1 interface 0 "Generic Flash Card
> Reader/Writer" rev 2.01/1.00 addr 2
> umass1: using SCSI over Bulk-Only
> scsibus3 at umass1: 2 targets, initiator 0
> sd2 at scsibus3 targ 1 lun 0: <Multiple, Card Reader, 1.00> SCSI2
> 0/direct removable serial.058f6366058F63666485
> vscsi0 at root
> scsibus4 at vscsi0: 256 targets
> softraid0 at root
> scsibus5 at softraid0: 256 targets
> root on rd0a swap on rd0b dump on rd0b
>
>
>
> Kind regards,
> Marco

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