Advice needed about ZFS
Dear Group, I am looking for advice on ZFS. My computer is running painfully slowly. I assume this is due to ZFS snapshots eating the entire disk space. My knowledge of ZFS is almost zero, this box was installed by a friend in the UK back in 2016 in the days when Ubuntu 16:04 was experimental and is still running 16.04. I have run the following commands sudo zpool set listsnapshots=on alexandria zfs list -o space -r alexandria Which seems to show the space is being eaten by snapshots of the home directory and oddly that there are no snapshots from before 2019. The computer is in effect unuseable at the moment. All suggestions are very welcome. The box is a dual boot Linux / Windows but the windows partition could be drastically reduced in size if this is the real problem. NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD alexandria 1.06G 332G 320K 96K 0 332G alexandria@zfs-auto-snap_monthly-2019-07-13-0141 - 64K - - - - alexandria@zfs-auto-snap_monthly-2019-08-25-1034 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-10-09-0831 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-11-09-2312 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-12-09-1923 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-01-23-0728 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-02-27-0408 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-03-28-0921 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-04-27-1130 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-18-0221 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-19-0117 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-20-0358 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-21-0350 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-22-0105 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-27-0155 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-05-27-0156 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-28-0349 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-02-0055 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-04-0725 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-09-0753 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-10-1034 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-17-0905 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-23-0415 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-29-0722 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-06-29-0732 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-30-0701 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-07-02-0619 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-07-03-0401 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-07-09-0110 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-07-19-0706 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-03-0048 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-08-03-0055 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-05-0229 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-06-0052 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-07-0202 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-08-1109 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-09-1053 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-10-0157 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-11-0347 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-12-0849 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-16-0601 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-1517 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-1617 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-1717 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-1817 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-1917 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-2017 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-2117 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-2217 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-2317 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0017 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0117 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0217 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0317 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0417 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0517 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0617 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0717 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-17-0738 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0817 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0917 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-1017 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-20-0201 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0217 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0317 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0417 - 0 - - - - alexandria@zfs-auto-snap_frequent-2020-08-20-0430 - 0 - - - - alexandria@zfs-auto-snap_frequent-2020-08-20-0445 - 0 - - - - alexandria@zfs-auto-snap_frequent-2020-08-20-0500 - 0 - - - - alexandria@zfs-auto-snap_frequent-2020-08-20-0515 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0517 - 0 - - - - alexandria/home 1.06G 332G 90.3G 242G 0 0 alexandria/home@zfs-auto-snap_monthly-2019-07-13-0141 - 328M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-18-0319 - 46.6M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-18-0818 - 37.5M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-19-0019 - 83.3M - - - - alexandria/home@zfs-auto-snap_monthly-2019-08-25-1034 - 282M - - - - alexandria/home@zfs-auto-snap_monthly-2019-10-09-0831 - 241M - - - - alexandria/home@zfs-auto-snap_monthly-2019-11-09-2312 - 787M - - - - alexandria/home@zfs-auto-snap_monthly-2019-12-09-1923 - 975M - - - - alexandria/home@zfs-auto-snap_monthly-2020-01-23-0728 - 513M - - - - alexandria/home@zfs-auto-snap_monthly-2020-02-27-0408 - 810M - - - - alexandria/home@zfs-auto-snap_monthly-2020-03-28-0921 - 754M - - - - alexandria/home@zfs-auto-snap_monthly-2020-04-27-1130 - 704M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-20-0358 - 277M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-21-0350 - 41.6M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-22-0105 - 34.3M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-27-0155 - 2.57M - - - - alexandria/home@zfs-auto-snap_monthly-2020-05-27-0156 - 2.84M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-28-0349 - 67.7M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-02-0055 - 63.7M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-04-0725 - 11.3M - - - - alexandria/home@zfs-auto-snap_weekly-2020-06-04-0730 - 14.9M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-09-0753 - 82.0M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-10-1034 - 137M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-17-0905 - 3.11M - - - - alexandria/home@zfs-auto-snap_weekly-2020-06-17-0910 - 1.27M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-23-0415 - 276K - - - - alexandria/home@zfs-auto-snap_daily-2020-06-23-0416 - 280K - - - - alexandria/home@zfs-auto-snap_daily-2020-06-29-0722 - 0 - - - - alexandria/home@zfs-auto-snap_daily-2020-06-29-0723 - 0 - - - - alexandria/home@zfs-auto-snap_weekly-2020-06-29-0728 - 14.2M - - - - alexandria/home@zfs-auto-snap_monthly-2020-06-29-0732 - 4.17M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-30-0701 - 58.6M - - - - alexandria/home@zfs-auto-snap_daily-2020-07-02-0619 - 152K - - - - alexandria/home@zfs-auto-snap_daily-2020-07-02-0620 - 156K - - - - alexandria/home@zfs-auto-snap_daily-2020-07-03-0401 - 69.9M - - - - alexandria/home@zfs-auto-snap_daily-2020-07-09-0110 - 6.30M - - - - alexandria/home@zfs-auto-snap_weekly-2020-07-09-0113 - 6.14M - - - - alexandria/home@zfs-auto-snap_daily-2020-07-19-0706 - 10.7M - - - - alexandria/home@zfs-auto-snap_weekly-2020-07-19-0710 - 7.14M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-03-0048 - 1.11M - - - - alexandria/home@zfs-auto-snap_weekly-2020-08-03-0050 - 732K - - - - alexandria/home@zfs-auto-snap_monthly-2020-08-03-0055 - 1.06M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-05-0229 - 5.16M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-06-0052 - 119M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-07-0202 - 105M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-08-1109 - 52.5M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-09-1053 - 57.5M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-10-0157 - 5.29M - - - - alexandria/home@zfs-auto-snap_weekly-2020-08-10-0202 - 5.28M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-11-0347 - 86.0M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-12-0849 - 71.0M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-16-0601 - 80K - - - - alexandria/home@zfs-auto-snap_daily-2020-08-16-0602 - 80K - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1517 - 8.85M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1617 - 8.65M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1717 - 8.75M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1817 - 8.55M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1917 - 8.61M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2017 - 8.54M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2117 - 8.59M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2217 - 8.65M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2317 - 8.70M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0017 - 8.49M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0117 - 9.46M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0217 - 8.75M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0317 - 19.0M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0417 - 19.0M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0517 - 21.2M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0617 - 38.5M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0717 - 92.2M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-17-0738 - 15.0M - - - - alexandria/home@zfs-auto-snap_weekly-2020-08-17-0740 - 9.04M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0817 - 34.8M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0917 - 20.9M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-1017 - 19.5M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-20-0201 - 15.0M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0217 - 14.7M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0317 - 19.5M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0417 - 2.98M - - - - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0430 - 1.77M - - - - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0445 - 1.74M - - - - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0500 - 1.76M - - - - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0515 - 1.44M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0517 - 1.23M - - - - stripinska@Stripinska:~$ -- Stripes Theotoky -37 .713869 145.050562
On Thu, 20 Aug 2020 at 16:59, stripes theotoky via luv-main < luv-main@luv.asn.au> wrote:
Dear Group,
I am looking for advice on ZFS. My computer is running painfully slowly. I assume this is due to ZFS snapshots eating the entire disk space. My knowledge of ZFS is almost zero, this box was installed by a friend in the UK back in 2016 in the days when Ubuntu 16:04 was experimental and is still running 16.04. I have run the following commands
sudo zpool set listsnapshots=on alexandria zfs list -o space -r alexandria Which seems to show the space is being eaten by snapshots of the home directory and oddly that there are no snapshots from before 2019. The computer is in effect unuseable at the moment. All suggestions are very welcome. The box is a dual boot Linux / Windows but the windows partition could be drastically reduced in size if this is the real problem.
NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD alexandria 1.06G 332G 320K 96K 0 332G alexandria@zfs-auto-snap_monthly-2019-07-13-0141 - 64K - - - - alexandria@zfs-auto-snap_monthly-2019-08-25-1034 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-10-09-0831 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-11-09-2312 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-12-09-1923 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-01-23-0728 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-02-27-0408 - 0 - - - -
alexandria/home 1.06G 332G 90.3G 242G 0 0 alexandria/home@zfs-auto-snap_monthly-2019-07-13-0141 - 328M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-18-0319 - 46.6M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-18-0818 - 37.5M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-19-0019 - 83.3M - - - - alexandria/home@zfs-auto-snap_monthly-2019-08-25-1034 - 282M - - - - alexandria/home@zfs-auto-snap_monthly-2019-10-09-0831 - 241M - - - - alexandria/home@zfs-auto-snap_monthly-2019-11-09-2312 - 787M - - - - alexandria/home@zfs-auto-snap_monthly-2019-12-09-1923 - 975M - - - - alexandria/home@zfs-auto-snap_monthly-2020-01-23-0728 - 513M - - - - alexandria/home@zfs-auto-snap_monthly-2020-02-27-0408 - 810M - - - - alexandria/home@zfs-auto-snap_monthly-2020-03-28-0921 - 754M - - - - alexandria/home@zfs-auto-snap_monthly-2020-04-27-1130 - 704M - - - -
Your pool 'alexandria' has - 1.06G of available capacity (AVAIL) - is using 332G (USED) - of which Snapshots are using 320K (USEDSNAP) - the dataset itself is using 96K (USEDDS) - of the USED capacity, 332G is in children of the dataset (USEDCHILD) Which in this case is in 'alexandria/home', presumably your home folder, and by the evidence you've listed is where all the action is. - 1.06G of available capacity (AVAIL) - is using 332G (USED) - of which Snapshots are using 90.3G (USEDSNAP) - the dataset itself is using 242G (USEDDS) Where is your root filesystem located? Wiser and more learned folk will give you a better answer but it will help if you can provide more data by sending the output of the following: sudo zpool list sudo zpool status sudo zfs list sudo zfs list -o space Here's what mine look like... ~$ sudo zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT data 5.44T 2.75T 2.69T - 3% 50% 1.00x ONLINE - Here you can see my 'data' pool is at 50% capacity ~$ sudo zpool status pool: data state: ONLINE scan: scrub repaired 0 in 4h1m with 0 errors on Sun Aug 16 06:01:14 2020 config: NAME STATE READ WRITE CKSUM data ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sda ONLINE 0 0 0 sdb ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 sdd ONLINE 0 0 0 sdc ONLINE 0 0 0 logs ata-OCZ-AGILITY3_OCZ-7FM2M2KI1395XLWG-part5 ONLINE 0 0 0 cache ata-OCZ-AGILITY3_OCZ-7FM2M2KI1395XLWG-part6 ONLINE 0 0 0 errors: No known data errors ~$ sudo zfs list -o space NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD data 2.52T 2.75T 0 128K 0 2.75T data/backup 2.52T 50.1G 28.0G 22.1G 0 0 data/home 2.52T 29.6G 19.7G 9.92G 0 0 data/images 2.52T 959G 13.8G 945G 0 0 data/media 2.52T 1.72T 34.2G 1.69T 0 0 data/www 2.52T 14.7G 106M 14.6G 0 0 Here you can see for my larger datasets (images, media) that the snapshots are the lesser of the used capacity as that data is relatively static. Compare that to home and backup where changing data within the dataset causes the snapshot used space to grow larger than the dataset. BTW you can list the snapshots without doing ' sudo zpool set listsnapshots=on alexandria' thus sudo zfs list -o space -t snapshot or sudo zfs list -t snapshot or sudo zfs list -t all But I don't think that ZFS pool and it's dataset are the cause of your issues but it might be that the ZFS logs have consumed space. What does df -h show for your system? -- Colin Fee tfeccles@gmail.com
Wiser and more learned folk will give you a better answer but it will help if you can provide more data by sending the output of the following: sudo zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT alexandria 344G 332G 11.8G - 69% 96% 1.00x ONLINE -
sudo zpool status
~$ sudo zpool status pool: alexandria state: ONLINE scan: scrub repaired 0 in 69h10m with 0 errors on Thu Aug 20 04:51:13 2020 config: NAME STATE READ WRITE CKSUM alexandria ONLINE 0 0 0 ata-WDC_WD10JPVX-08JC3T6_WD-WXX1E752KKE7-part7 ONLINE 0 0 0 errors: No known data errors
sudo zfs list
~$ sudo zfs list NAME USED AVAIL REFER MOUNTPOINT alexandria 332G 1.02G 96K /alexandria alexandria@zfs-auto-snap_monthly-2019-07-13-0141 64K - 96K - alexandria@zfs-auto-snap_monthly-2019-08-25-1034 0 - 96K - alexandria@zfs-auto-snap_monthly-2019-10-09-0831 0 - 96K - alexandria@zfs-auto-snap_monthly-2019-11-09-2312 0 - 96K - alexandria@zfs-auto-snap_monthly-2019-12-09-1923 0 - 96K - alexandria@zfs-auto-snap_monthly-2020-01-23-0728 0 - 96K - alexandria@zfs-auto-snap_monthly-2020-02-27-0408 0 - 96K - alexandria@zfs-auto-snap_monthly-2020-03-28-0921 0 - 96K - alexandria@zfs-auto-snap_monthly-2020-04-27-1130 0 - 96K - alexandria@zfs-auto-snap_daily-2020-05-18-0221 0 - 96K - alexandria@zfs-auto-snap_daily-2020-05-19-0117 0 - 96K - alexandria@zfs-auto-snap_daily-2020-05-20-0358 0 - 96K - alexandria@zfs-auto-snap_daily-2020-05-21-0350 0 - 96K - alexandria@zfs-auto-snap_daily-2020-05-22-0105 0 - 96K - alexandria@zfs-auto-snap_daily-2020-05-27-0155 0 - 96K - alexandria@zfs-auto-snap_monthly-2020-05-27-0156 0 - 96K - alexandria@zfs-auto-snap_daily-2020-05-28-0349 0 - 96K - alexandria@zfs-auto-snap_daily-2020-06-02-0055 0 - 96K - alexandria@zfs-auto-snap_daily-2020-06-04-0725 0 - 96K - alexandria@zfs-auto-snap_daily-2020-06-09-0753 0 - 96K - alexandria@zfs-auto-snap_daily-2020-06-10-1034 0 - 96K - alexandria@zfs-auto-snap_daily-2020-06-17-0905 0 - 96K - alexandria@zfs-auto-snap_daily-2020-06-23-0415 0 - 96K - alexandria@zfs-auto-snap_daily-2020-06-29-0722 0 - 96K - alexandria@zfs-auto-snap_monthly-2020-06-29-0732 0 - 96K - alexandria@zfs-auto-snap_daily-2020-06-30-0701 0 - 96K - alexandria@zfs-auto-snap_daily-2020-07-02-0619 0 - 96K - alexandria@zfs-auto-snap_daily-2020-07-03-0401 0 - 96K - alexandria@zfs-auto-snap_daily-2020-07-09-0110 0 - 96K - alexandria@zfs-auto-snap_daily-2020-07-19-0706 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-03-0048 0 - 96K - alexandria@zfs-auto-snap_monthly-2020-08-03-0055 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-05-0229 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-06-0052 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-07-0202 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-08-1109 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-09-1053 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-10-0157 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-11-0347 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-12-0849 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-16-0601 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-16-1817 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-16-1917 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-16-2017 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-16-2117 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-16-2217 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-16-2317 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0017 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0117 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0217 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0317 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0417 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0517 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0617 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0717 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-17-0738 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0817 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-0917 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-17-1017 0 - 96K - alexandria@zfs-auto-snap_daily-2020-08-20-0201 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-20-0217 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-20-0317 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-20-0417 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-20-0517 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-20-0617 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-20-0717 0 - 96K - alexandria@zfs-auto-snap_frequent-2020-08-20-0745 0 - 96K - alexandria@zfs-auto-snap_frequent-2020-08-20-0800 0 - 96K - alexandria@zfs-auto-snap_frequent-2020-08-20-0815 0 - 96K - alexandria@zfs-auto-snap_hourly-2020-08-20-0817 0 - 96K - alexandria@zfs-auto-snap_frequent-2020-08-20-0830 0 - 96K - alexandria/home 332G 1.02G 242G /home alexandria/home@zfs-auto-snap_monthly-2019-07-13-0141 328M - 288G - alexandria/home@zfs-auto-snap_hourly-2019-07-18-0319 46.6M - 288G - alexandria/home@zfs-auto-snap_hourly-2019-07-18-0818 37.5M - 288G - alexandria/home@zfs-auto-snap_hourly-2019-07-19-0019 83.3M - 288G - alexandria/home@zfs-auto-snap_monthly-2019-08-25-1034 282M - 294G - alexandria/home@zfs-auto-snap_monthly-2019-10-09-0831 241M - 295G - alexandria/home@zfs-auto-snap_monthly-2019-11-09-2312 787M - 296G - alexandria/home@zfs-auto-snap_monthly-2019-12-09-1923 975M - 300G - alexandria/home@zfs-auto-snap_monthly-2020-01-23-0728 513M - 301G - alexandria/home@zfs-auto-snap_monthly-2020-02-27-0408 810M - 301G - alexandria/home@zfs-auto-snap_monthly-2020-03-28-0921 754M - 301G - alexandria/home@zfs-auto-snap_monthly-2020-04-27-1130 704M - 302G - alexandria/home@zfs-auto-snap_daily-2020-05-20-0358 277M - 304G - alexandria/home@zfs-auto-snap_daily-2020-05-21-0350 41.6M - 304G - alexandria/home@zfs-auto-snap_daily-2020-05-22-0105 34.3M - 304G - alexandria/home@zfs-auto-snap_daily-2020-05-27-0155 2.57M - 303G - alexandria/home@zfs-auto-snap_monthly-2020-05-27-0156 2.84M - 303G - alexandria/home@zfs-auto-snap_daily-2020-05-28-0349 67.7M - 304G - alexandria/home@zfs-auto-snap_daily-2020-06-02-0055 63.7M - 303G - alexandria/home@zfs-auto-snap_daily-2020-06-04-0725 11.3M - 305G - alexandria/home@zfs-auto-snap_weekly-2020-06-04-0730 14.9M - 305G - alexandria/home@zfs-auto-snap_daily-2020-06-09-0753 82.0M - 305G - alexandria/home@zfs-auto-snap_daily-2020-06-10-1034 137M - 305G - alexandria/home@zfs-auto-snap_daily-2020-06-17-0905 3.11M - 305G - alexandria/home@zfs-auto-snap_weekly-2020-06-17-0910 1.27M - 305G - alexandria/home@zfs-auto-snap_daily-2020-06-23-0415 276K - 305G - alexandria/home@zfs-auto-snap_daily-2020-06-23-0416 280K - 305G - alexandria/home@zfs-auto-snap_daily-2020-06-29-0722 0 - 305G - alexandria/home@zfs-auto-snap_daily-2020-06-29-0723 0 - 305G - alexandria/home@zfs-auto-snap_weekly-2020-06-29-0728 14.2M - 305G - alexandria/home@zfs-auto-snap_monthly-2020-06-29-0732 4.17M - 306G - alexandria/home@zfs-auto-snap_daily-2020-06-30-0701 58.6M - 306G - alexandria/home@zfs-auto-snap_daily-2020-07-02-0619 152K - 306G - alexandria/home@zfs-auto-snap_daily-2020-07-02-0620 156K - 306G - alexandria/home@zfs-auto-snap_daily-2020-07-03-0401 69.9M - 305G - alexandria/home@zfs-auto-snap_daily-2020-07-09-0110 6.30M - 298G - alexandria/home@zfs-auto-snap_weekly-2020-07-09-0113 6.14M - 298G - alexandria/home@zfs-auto-snap_daily-2020-07-19-0706 10.7M - 296G - alexandria/home@zfs-auto-snap_weekly-2020-07-19-0710 7.14M - 296G - alexandria/home@zfs-auto-snap_daily-2020-08-03-0048 1.11M - 292G - alexandria/home@zfs-auto-snap_weekly-2020-08-03-0050 732K - 292G - alexandria/home@zfs-auto-snap_monthly-2020-08-03-0055 1.06M - 292G - alexandria/home@zfs-auto-snap_daily-2020-08-05-0229 5.16M - 292G - alexandria/home@zfs-auto-snap_daily-2020-08-06-0052 119M - 293G - alexandria/home@zfs-auto-snap_daily-2020-08-07-0202 105M - 242G - alexandria/home@zfs-auto-snap_daily-2020-08-08-1109 52.5M - 242G - alexandria/home@zfs-auto-snap_daily-2020-08-09-1053 57.5M - 242G - alexandria/home@zfs-auto-snap_daily-2020-08-10-0157 5.29M - 242G - alexandria/home@zfs-auto-snap_weekly-2020-08-10-0202 5.28M - 242G - alexandria/home@zfs-auto-snap_daily-2020-08-11-0347 86.0M - 242G - alexandria/home@zfs-auto-snap_daily-2020-08-12-0849 71.0M - 242G - alexandria/home@zfs-auto-snap_daily-2020-08-16-0601 80K - 242G - alexandria/home@zfs-auto-snap_daily-2020-08-16-0602 80K - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1817 9.19M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1917 8.61M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2017 8.54M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2117 8.59M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2217 8.65M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2317 8.70M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0017 8.49M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0117 9.46M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0217 8.75M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0317 19.0M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0417 19.0M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0517 21.2M - 235G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0617 38.5M - 237G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0717 92.2M - 239G - alexandria/home@zfs-auto-snap_daily-2020-08-17-0738 15.0M - 240G - alexandria/home@zfs-auto-snap_weekly-2020-08-17-0740 9.04M - 240G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0817 34.8M - 241G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0917 20.9M - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-17-1017 19.5M - 242G - alexandria/home@zfs-auto-snap_daily-2020-08-20-0201 15.0M - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0217 14.7M - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0317 19.5M - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0417 8.52M - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0517 14.7M - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0617 7.85M - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0717 4.51M - 242G - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0745 2.61M - 242G - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0800 1.76M - 242G - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0815 1.57M - 242G - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0817 1.38M - 242G - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0830 1.55M - 242G -
sudo zfs list -o space
~$ zfs list -o space NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD alexandria 1.02G 332G 320K 96K 0 332G alexandria@zfs-auto-snap_monthly-2019-07-13-0141 - 64K - - - - alexandria@zfs-auto-snap_monthly-2019-08-25-1034 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-10-09-0831 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-11-09-2312 - 0 - - - - alexandria@zfs-auto-snap_monthly-2019-12-09-1923 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-01-23-0728 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-02-27-0408 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-03-28-0921 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-04-27-1130 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-18-0221 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-19-0117 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-20-0358 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-21-0350 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-22-0105 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-27-0155 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-05-27-0156 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-05-28-0349 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-02-0055 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-04-0725 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-09-0753 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-10-1034 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-17-0905 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-23-0415 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-29-0722 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-06-29-0732 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-06-30-0701 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-07-02-0619 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-07-03-0401 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-07-09-0110 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-07-19-0706 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-03-0048 - 0 - - - - alexandria@zfs-auto-snap_monthly-2020-08-03-0055 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-05-0229 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-06-0052 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-07-0202 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-08-1109 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-09-1053 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-10-0157 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-11-0347 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-12-0849 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-16-0601 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-1817 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-1917 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-2017 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-2117 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-2217 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-16-2317 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0017 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0117 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0217 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0317 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0417 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0517 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0617 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0717 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-17-0738 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0817 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-0917 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-17-1017 - 0 - - - - alexandria@zfs-auto-snap_daily-2020-08-20-0201 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0217 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0317 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0417 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0517 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0617 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0717 - 0 - - - - alexandria@zfs-auto-snap_frequent-2020-08-20-0745 - 0 - - - - alexandria@zfs-auto-snap_frequent-2020-08-20-0800 - 0 - - - - alexandria@zfs-auto-snap_frequent-2020-08-20-0815 - 0 - - - - alexandria@zfs-auto-snap_hourly-2020-08-20-0817 - 0 - - - - alexandria@zfs-auto-snap_frequent-2020-08-20-0830 - 0 - - - - alexandria/home 1.02G 332G 90.4G 242G 0 0 alexandria/home@zfs-auto-snap_monthly-2019-07-13-0141 - 328M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-18-0319 - 46.6M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-18-0818 - 37.5M - - - - alexandria/home@zfs-auto-snap_hourly-2019-07-19-0019 - 83.3M - - - - alexandria/home@zfs-auto-snap_monthly-2019-08-25-1034 - 282M - - - - alexandria/home@zfs-auto-snap_monthly-2019-10-09-0831 - 241M - - - - alexandria/home@zfs-auto-snap_monthly-2019-11-09-2312 - 787M - - - - alexandria/home@zfs-auto-snap_monthly-2019-12-09-1923 - 975M - - - - alexandria/home@zfs-auto-snap_monthly-2020-01-23-0728 - 513M - - - - alexandria/home@zfs-auto-snap_monthly-2020-02-27-0408 - 810M - - - - alexandria/home@zfs-auto-snap_monthly-2020-03-28-0921 - 754M - - - - alexandria/home@zfs-auto-snap_monthly-2020-04-27-1130 - 704M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-20-0358 - 277M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-21-0350 - 41.6M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-22-0105 - 34.3M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-27-0155 - 2.57M - - - - alexandria/home@zfs-auto-snap_monthly-2020-05-27-0156 - 2.84M - - - - alexandria/home@zfs-auto-snap_daily-2020-05-28-0349 - 67.7M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-02-0055 - 63.7M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-04-0725 - 11.3M - - - - alexandria/home@zfs-auto-snap_weekly-2020-06-04-0730 - 14.9M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-09-0753 - 82.0M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-10-1034 - 137M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-17-0905 - 3.11M - - - - alexandria/home@zfs-auto-snap_weekly-2020-06-17-0910 - 1.27M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-23-0415 - 276K - - - - alexandria/home@zfs-auto-snap_daily-2020-06-23-0416 - 280K - - - - alexandria/home@zfs-auto-snap_daily-2020-06-29-0722 - 0 - - - - alexandria/home@zfs-auto-snap_daily-2020-06-29-0723 - 0 - - - - alexandria/home@zfs-auto-snap_weekly-2020-06-29-0728 - 14.2M - - - - alexandria/home@zfs-auto-snap_monthly-2020-06-29-0732 - 4.17M - - - - alexandria/home@zfs-auto-snap_daily-2020-06-30-0701 - 58.6M - - - - alexandria/home@zfs-auto-snap_daily-2020-07-02-0619 - 152K - - - - alexandria/home@zfs-auto-snap_daily-2020-07-02-0620 - 156K - - - - alexandria/home@zfs-auto-snap_daily-2020-07-03-0401 - 69.9M - - - - alexandria/home@zfs-auto-snap_daily-2020-07-09-0110 - 6.30M - - - - alexandria/home@zfs-auto-snap_weekly-2020-07-09-0113 - 6.14M - - - - alexandria/home@zfs-auto-snap_daily-2020-07-19-0706 - 10.7M - - - - alexandria/home@zfs-auto-snap_weekly-2020-07-19-0710 - 7.14M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-03-0048 - 1.11M - - - - alexandria/home@zfs-auto-snap_weekly-2020-08-03-0050 - 732K - - - - alexandria/home@zfs-auto-snap_monthly-2020-08-03-0055 - 1.06M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-05-0229 - 5.16M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-06-0052 - 119M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-07-0202 - 105M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-08-1109 - 52.5M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-09-1053 - 57.5M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-10-0157 - 5.29M - - - - alexandria/home@zfs-auto-snap_weekly-2020-08-10-0202 - 5.28M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-11-0347 - 86.0M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-12-0849 - 71.0M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-16-0601 - 80K - - - - alexandria/home@zfs-auto-snap_daily-2020-08-16-0602 - 80K - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1817 - 9.19M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-1917 - 8.61M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2017 - 8.54M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2117 - 8.59M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2217 - 8.65M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-16-2317 - 8.70M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0017 - 8.49M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0117 - 9.46M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0217 - 8.75M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0317 - 19.0M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0417 - 19.0M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0517 - 21.2M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0617 - 38.5M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0717 - 92.2M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-17-0738 - 15.0M - - - - alexandria/home@zfs-auto-snap_weekly-2020-08-17-0740 - 9.04M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0817 - 34.8M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-0917 - 20.9M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-17-1017 - 19.5M - - - - alexandria/home@zfs-auto-snap_daily-2020-08-20-0201 - 15.0M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0217 - 14.7M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0317 - 19.5M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0417 - 8.52M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0517 - 14.7M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0617 - 7.85M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0717 - 4.51M - - - - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0745 - 2.61M - - - - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0800 - 1.76M - - - - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0815 - 1.57M - - - - alexandria/home@zfs-auto-snap_hourly-2020-08-20-0817 - 1.38M - - - - alexandria/home@zfs-auto-snap_frequent-2020-08-20-0830 - 1.64M -
Here's what mine look like...
~$ sudo zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT data 5.44T 2.75T 2.69T - 3% 50% 1.00x ONLINE -
Here you can see my 'data' pool is at 50% capacity
~$ sudo zpool status pool: data state: ONLINE scan: scrub repaired 0 in 4h1m with 0 errors on Sun Aug 16 06:01:14 2020 config:
NAME STATE READ WRITE CKSUM data ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 sda ONLINE 0 0 0 sdb ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 sdd ONLINE 0 0 0 sdc ONLINE 0 0 0 logs ata-OCZ-AGILITY3_OCZ-7FM2M2KI1395XLWG-part5 ONLINE 0 0 0 cache ata-OCZ-AGILITY3_OCZ-7FM2M2KI1395XLWG-part6 ONLINE 0 0 0
errors: No known data errors
~$ sudo zfs list -o space NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD data 2.52T 2.75T 0 128K 0 2.75T data/backup 2.52T 50.1G 28.0G 22.1G 0 0 data/home 2.52T 29.6G 19.7G 9.92G 0 0 data/images 2.52T 959G 13.8G 945G 0 0 data/media 2.52T 1.72T 34.2G 1.69T 0 0 data/www 2.52T 14.7G 106M 14.6G 0 0
Here you can see for my larger datasets (images, media) that the snapshots are the lesser of the used capacity as that data is relatively static. Compare that to home and backup where changing data within the dataset causes the snapshot used space to grow larger than the dataset.
BTW you can list the snapshots without doing ' sudo zpool set listsnapshots=on alexandria' thus
sudo zfs list -o space -t snapshot
or
sudo zfs list -t snapshot
or
sudo zfs list -t all
But I don't think that ZFS pool and it's dataset are the cause of your issues but it might be that the ZFS logs have consumed space.
What does df -h show for your system?
~$ df -h Filesystem Size Used Avail Use% Mounted on udev 7.7G 0 7.7G 0% /dev tmpfs 1.6G 18M 1.6G 2% /run /dev/sda6 39G 24G 13G 65% / tmpfs 7.7G 8.0M 7.7G 1% /dev/shm tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 7.7G 0 7.7G 0% /sys/fs/cgroup alexandria 1.1G 128K 1.1G 1% /alexandria alexandria/home 243G 242G 1.1G 100% /home tmpfs 1.6G 12K 1.6G 1% /run/user/121 tmpfs 1.6G 56K 1.6G 1% /run/user/1000 pCloud.fs 2.0T 187G 1.9T 10% /home/stripinska/pCloudDrive /dev/sda1 1.5G 356M 1.2G 24% /media/stripinska/SYSTEM_DRV Note this box is set up to dual boot windows 7 although it often goes months without doing so. The windows partition doesn't seem to be listed (it is 560G at present) Stripes.
-- Colin Fee tfeccles@gmail.com
-- Stripes Theotoky -37 .713869 145.050562
On Thu, 20 Aug 2020 at 19:55, stripes theotoky < stripes.theotoky@googlemail.com> wrote:
Wiser and more learned folk will give you a better answer but it will help if you can provide more data by sending the output of the following:
sudo zpool list
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT alexandria 344G 332G 11.8G - 69% 96% 1.00x ONLINE -
Thanks for the reply. Above line is the most telling data and so I take back what I said before, this is likely the cause given it's your home volume. It's very full! Your pool is at 96% capacity and 69% fragmented. The 96% is the biggest issue, there is (was?) a rule-of-thumb guid with copy-on-write filesystems, of which ZFS is an example, that you should keep the used capacity below 80%.
alexandria/home 1.02G 332G 90.4G 242G 0 0
In the pool, your one dataset 'alexandria/home', the snapshots are 90.4G of 332G or 27%, so not the full culprit. The fact the disk is nearly full is. Possible things to do.... Make a backup first!! or several. Delete some stuff, clear browser caches, other caches in your user profile. To clear the fragmentation, copy the data somewhere else, delete it, then copy it back. -- Colin Fee tfeccles@gmail.com
The first question that was asked was whether many snapshots slow the system down. The answer is probably not. When developing my etbemon monitoring system I made the BTRFS monitor alert by default on more than 500 subvolumes (usually snapshots) as I had noticed performance problems with 1000+. You have less than that and ZFS has been optimised for performance more than BTRFS so it shouldn't be a problem. http://cdn.msy.com.au/Parts/PARTS.pdf The next thing is that 344G is not much space by today's standards. It's large enough that if installed in 2016 that probably isn't SSD, but small enough to easily fit on modern SSDs. MSY has 1TB SSDs starting at $135 and 2TB SSDs starting at $289. Get a couple of those and transfer the filesystem to them and it will be much faster. Also fragmentation doesn't matter on SSD. On Thursday, 20 August 2020 8:23:25 PM AEST Colin Fee via luv-main wrote:
sudo zpool list
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT alexandria 344G 332G 11.8G - 69% 96% 1.00x ONLINE -
Thanks for the reply. Above line is the most telling data and so I take back what I said before, this is likely the cause given it's your home volume. It's very full!
Your pool is at 96% capacity and 69% fragmented. The 96% is the biggest issue, there is (was?) a rule-of-thumb guid with copy-on-write filesystems, of which ZFS is an example, that you should keep the used capacity below 80%.
The amount of space you need to keep free varies a lot depending on the data type and usage. For example I run a ZFS server that regularly goes to 98% capacity with no problems, it is almost entirely used for 20MB files. Lots of files the same size means fragmentation isn't a big problem and large files written contiguously means it's easy for the filesystem to write them contiguously to disk. That is however an unusual corner case. For a /home 96% used is probably really bad for performance. You might get something useful from the following command: du /home|sort -n|tail -50
alexandria/home 1.02G 332G 90.4G 242G 0 0
In the pool, your one dataset 'alexandria/home', the snapshots are 90.4G of 332G or 27%, so not the full culprit. The fact the disk is nearly full is.
Possible things to do....
Make a backup first!! or several.
https://www.officeworks.com.au/shop/officeworks/c/technology/hard-drives-dat... Yes, always have lots of backups! Officeworks has some reasonable options for USB attached backup devices. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/
participants (3)
-
Colin Fee -
Russell Coker -
stripes theotoky