Improvements to sysutils/lsof

Cath O'Deray

Cath O'Deray

 
sysutils/lsof

Background

Alain De Vos said:
lsof does not show anything.
Click to expand...

– and so on.


Now

Good news. Significant improvements ahead:

github.com

Use user mode APIs on FreeBSD by DamjanJovanovic · Pull Request #184 · lsof-org/lsof

This patchset gets lsof to mainly use user mode APIs on FreeBSD. Kernel access with kvm is now optional although still required for a few features. Many other bugs are fixed in the process, the cod...
github.com github.com

Related FreeBSD bugs include:
 
covacat said:
procstat -af |grep /path/to/file
Click to expand...

Code: 
root@mowa219-gjp4-8570p-freebsd:~ # mount | grep Transcend
Transcend on /Volumes/t500 (zfs, local, nfsv4acls)
Transcend/VirtualBox on /Volumes/t500/VirtualBox (zfs, local, nfsv4acls)
root@mowa219-gjp4-8570p-freebsd:~ # procstat -af |grep /Volumes/t500/VirtualBox
procstat: kinfo_getfile(): No such process
root@mowa219-gjp4-8570p-freebsd:~ # lsof /Volumes/t500/VirtualBox
lsof: WARNING: device cache mismatch: /dev/drm/74
lsof: WARNING: no ZFS support has been defined.
      See 00FAQ for more information.
lsof: WARNING: /root/.lsof_mowa219-gjp4-8570p-freebsd was updated.
root@mowa219-gjp4-8570p-freebsd:~ #
 
SirDice said:
fstat(1)?
Click to expand...

"… Normally the name cannot be determined …"

So, a list of inode numbers, not a list of names.

Based on Quickly find which file(s) belongs to a specific inode number - Unix & Linux Stack Exchange (the question, not the answer):

Code: 
root@mowa219-gjp4-8570p-freebsd:~ # fstat -f /Volumes/t500/VirtualBox/
USER     CMD          PID   FD MOUNT      INUM MODE         SZ|DV R/W
grahampe VirtualBoxVM 34245   36 /Volumes/t500/VirtualBox    422 -rw-------  36710645760 rw
grahampe VirtualBoxVM 34245   37 /Volumes/t500/VirtualBox     49 -rw-------   77262  w
grahampe VirtualBoxVM 34245   39 /Volumes/t500/VirtualBox     53 -rw-------  1037041664  r
root@mowa219-gjp4-8570p-freebsd:~ # find /Volumes/t500/VirtualBox -inum 49
/Volumes/t500/VirtualBox/BSD/FreeBSD/FreeBSD 13-STABLE/Logs/VBox.log
root@mowa219-gjp4-8570p-freebsd:~ # find /Volumes/t500/VirtualBox -inum 53
/Volumes/t500/VirtualBox/BSD/FreeBSD/FreeBSD 13-STABLE/FreeBSD 13-STABLE.vdi
root@mowa219-gjp4-8570p-freebsd:~ # find /Volumes/t500/VirtualBox -inum 422
/Volumes/t500/VirtualBox/BSD/FreeBSD/FreeBSD 13-STABLE/Snapshots/{abd46eb0-cc97-4524-8094-ec3199417372}.vdi
root@mowa219-gjp4-8570p-freebsd:~ #
 
ZFS aside, for a moment.

From Mac OS X, I'm accustomed to lsof alone resulting in a list of files that includes the path to each named file. For example, from <https://apple.stackexchange.com/a/104850/8546>

Code: 
COMMAND    PID  USER   FD   TYPE DEVICE SIZE/OFF  NODE NAME
mds         89  root   19r   DIR   52,3      432     2 /Volumes/Photos
mds         89  root   23r   DIR   52,3      432     2 /Volumes/Photos
Finder     681 alans   14r   DIR   52,3      432     2 /Volumes/Photos
QuickLook 2158 alans    9r   REG   52,3  1141591 78651 /Volumes/Photos/_tmp_iphone_10_backup/APC_1546.JPG


lsof(8) for FreeBSD

Below, there's the inode number for a file on a UFS file system. From the manual page, I can't tell how to get the path and filename.

Code: 
root@mowa219-gjp4-8570p-freebsd:~ # lsof /media/Verbatim_STORE_N_GO_07B7050762213D03_s2_s2a
lsof: WARNING: no ZFS support has been defined.
      See 00FAQ for more information.
COMMAND   PID         USER   FD   TYPE DEVICE SIZE/OFF  NODE NAME
code-oss 4172 grahamperrin  122r  VREG    2,8        0 12297 /media/Verbatim_STORE_N_GO_07B7050762213D03_s2_s2a (/dev/da3s2a)
root@mowa219-gjp4-8570p-freebsd:~ #
 
grahamperrin said:
… Mac OS X, I'm accustomed to lsof alone resulting in a list of files that includes the path to each named file. …
Click to expand...

… the inode number for a file on a UFS file system. From the manual page, I can't tell how to get the path and filename. …
Click to expand...

Largely fixed – tested with OpenZFS and UFS – but not yet in the ports collection:

Code: 
root@mowa219-gjp4-8570p-freebsd:~ # lsof /Volumes/t500/VirtualBox/
lsof: WARNING -- reading xvnode list failed: No such file or directory
COMMAND     PID         USER   FD   TYPE                DEVICE   SIZE/OFF NODE NAME
VirtualBo 56066 grahamperrin   36w  VREG 3567975594,2089344763      70041  222 /Volumes/t500/VirtualBox/BSD/others/OpenBSD/Logs/VBox.log (Transcend/VirtualBox)
VirtualBo 56066 grahamperrin   39r  VREG 3567975594,2089344763 2379218944  158 /Volumes/t500/VirtualBox/BSD/others/OpenBSD/OpenBSD.vdi (Transcend/VirtualBox)
VirtualBo 56066 grahamperrin   43u  VREG 3567975594,2089344763  312475648  328 /Volumes/t500/VirtualBox/BSD/others/OpenBSD/Snapshots/{66c19c3c-ec01-4d02-99b9-8be9d9090666}.vdi (Transcend/VirtualBox)
VirtualBo 56066 grahamperrin   46r  VREG 3567975594,2089344763  621858951  448 /Volumes/t500/VirtualBox/BSD/others/OpenBSD/Snapshots/2022-01-24T07-36-01-348375000Z.sav (Transcend/VirtualBox)
root@mowa219-gjp4-8570p-freebsd:~ # mount | grep ufs
/dev/da3s2a on /media/Verbatim_STORE_N_GO_07B7050762213D03_s2_s2a (ufs, local)
root@mowa219-gjp4-8570p-freebsd:~ # lsof /media/Verbatim_STORE_N_GO_07B7050762213D03_s2_s2a
lsof: WARNING -- reading xvnode list failed: No such file or directory
COMMAND   PID         USER   FD   TYPE DEVICE SIZE/OFF  NODE NAME
code-oss 4172 grahamperrin  106r  VREG    2,8        0 12297 /media/Verbatim_STORE_N_GO_07B7050762213D03_s2_s2a/tmp/touched.txt (/dev/da3s2a)
root@mowa219-gjp4-8570p-freebsd:~ #
 
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