cli tool to find older versions of a given file in your zfs snapshots.
Home Page: https://j-keck.github.io/zsd
License: MIT License
cli tool to find older versions of a given file in your zfs snapshots.
For a browser based version see zfs-snap-diff.
See the website for more details.
You can download a prebuild version from here.
./zsd <FILE> <ACTION>
from j-keck/zfs-snap-diff#13:
Hi,
It seems I failed to notice two things with the original code with #12.
Appologies.the timestamp given for the record is the snapshot timestamp; is it possible to use the file timestamp instead?
Also; parse-time-string would be happier with a RFC 822 datetime:"Parse the time in STRING into (SEC MIN HOUR DAY MON YEAR DOW DST TZ).
STRING should be something resembling an RFC 822 (or later) date-time, e.g.,
"Fri, 25 Mar 2016 16:24:56 +0100", but this function is
somewhat liberal in what format it accepts, and will attempt to
return a "likely" value even for somewhat malformed strings.
The values returned are identical to those of `decode-time', but
any unknown values other than DST are returned as nil, and an
unknown DST value is returned as -1."
I am having an issue on FreeBSD, where zsd is using the wrong dataset, and is not finding the changed files. This is a default, out of the box FreeBSD 13.0 ZFS installation.
/root: zsd -d 6 -v /var/db/mysql/ibdata1 list
DEBUG | full path: /var/db/mysql/ibdata1
DEBUG | exceute: zfs list -Ho name
DEBUG | search datasets under zfs: zroot
DEBUG | exceute: zfs list -Hp -o name,used,avail,refer,mountpoint -r -t filesystem zroot
DEBUG | 13 datasets found:
DEBUG | Name Mountpoint
DEBUG | zroot /zroot
DEBUG | zroot/ROOT/default /
DEBUG | zroot/tmp /tmp
DEBUG | zroot/usr /usr
DEBUG | zroot/usr/home /usr/home
DEBUG | zroot/usr/ports /usr/ports
DEBUG | zroot/usr/src /usr/src
DEBUG | zroot/var /var
DEBUG | zroot/var/audit /var/audit
DEBUG | zroot/var/crash /var/crash
DEBUG | zroot/var/log /var/log
DEBUG | zroot/var/mail /var/mail
DEBUG | zroot/var/tmp /var/tmp
DEBUG | 1 not mounted datasets ignored:
DEBUG | zroot/ROOT
DEBUG | Dataset for path found - path: /var/db/mysql/ibdata1, ds: zroot/var, mount-point: /var
DEBUG | work on dataset: zroot/var
scan the last 6 days for other file versions
DEBUG | exceute: zfs list -t snapshot -s creation -r -d 1 -o name,creation -Hp zroot/var
DEBUG | search for file versions for file: /var/db/mysql/ibdata1, in the date range: between Fri Dec 24 2021 and Thu Dec 30 2021
DEBUG | 0 versions for file /var/db/mysql/ibdata1 found - scan duration: 7.337788ms
# | File changed | Snapshot | Snapshot age
--------------------------------------------
Actually, the dataset should be zroot/ROOT/default and not zroot/var.
/var is no mount point for zroot/var.
/root: mount
devfs on /dev (devfs)
zroot/tmp on /tmp (zfs, local, noatime, nosuid, nfsv4acls)
zroot/var/log on /var/log (zfs, local, noatime, noexec, nosuid, nfsv4acls)
zroot/usr/src on /usr/src (zfs, local, noatime, nfsv4acls)
zroot/var/mail on /var/mail (zfs, local, nfsv4acls)
zroot/var/crash on /var/crash (zfs, local, noatime, noexec, nosuid, nfsv4acls)
zroot/var/tmp on /var/tmp (zfs, local, noatime, nosuid, nfsv4acls)
zroot/usr/home on /usr/home (zfs, local, noatime, nfsv4acls)
zroot on /zroot (zfs, local, noatime, nfsv4acls)
zroot/usr/ports on /usr/ports (zfs, local, noatime, nosuid, nfsv4acls)
zroot/var/audit on /var/audit (zfs, local, noatime, noexec, nosuid, nfsv4acls)
However, there must be some misunderstanding about the meaning of the mount point in zfs list because zfs list is showing /var as being a mount point (but there are only about 3 MB of data, while I have GB's of data on /var/db ...)
It is my understanding that zroot/var and /var are only placeholders for /var/audit, /var/log, and so on.
/root: zfs list
NAME USED AVAIL REFER MOUNTPOINT
zroot 20.6G 29.3G 96K /zroot
zroot/ROOT 19.8G 29.3G 96K none
zroot/ROOT/default 19.8G 29.3G 19.8G /
zroot/tmp 128K 29.3G 128K /tmp
zroot/usr 722M 29.3G 96K /usr
zroot/usr/home 128K 29.3G 128K /usr/home
zroot/usr/ports 722M 29.3G 722M /usr/ports
zroot/usr/src 96K 29.3G 96K /usr/src
zroot/var 2.89M 29.3G 96K /var
zroot/var/audit 96K 29.3G 96K /var/audit
zroot/var/crash 96K 29.3G 96K /var/crash
zroot/var/log 2.07M 29.3G 1.69M /var/log
zroot/var/mail 456K 29.3G 456K /var/mail
zroot/var/tmp 96K 29.3G 96K /var/tmp
Maybe a solution could be to check if the file system can be mounted?
/root: zfs list -o name,mountpoint,canmount
NAME MOUNTPOINT CANMOUNT
zroot /zroot on
zroot/ROOT none on
zroot/ROOT/default / noauto
zroot/tmp /tmp on
zroot/usr /usr off
zroot/usr/home /usr/home on
zroot/usr/ports /usr/ports on
zroot/usr/src /usr/src on
zroot/var /var off
zroot/var/audit /var/audit on
zroot/var/crash /var/crash on
zroot/var/log /var/log on
zroot/var/mail /var/mail on
zroot/var/tmp /var/tmp on
Could this be looked at? Thank you and have a happy new year!
Jan
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