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A.S. Pushkin
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Joined: 09 Nov 2002
Posts: 418
Location: dx/dt, dy/dt, dz/dt, t
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 Posted: Fri Apr 21, 2017 2:41 am Post subject: tmpfs setup? |
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I've got a problem. I fell in love with my Samsung 850 PRO, but soon discovered that it has a serious problem, no matter
what I do it "fills up." I initially installed Gentoo on a 128GB 850 PRO with /home on a 320GB Seagate Baracuda. I
discovered the SSD was filling up and running DeVeDeNG to completion was failing. SO I migrated to a
256GB 850 PRO. Well, the same thing has happened! This will be a problem with opencascade and libreoffice.
I decided to move /var and /tmp from the SSD to the spinner and that seems to have been successful, but I'm
having trouble setting up fstab to use tmpfs. I have 32GB of RAM so I assume that should work to help with this
problem. Perhaps I'm assuming too much, but I hope not. I have my old spinner so I'll have a look at that if I
am unable to find a solution on the Forum. I've done a lot of searching, but have not found a solution that solves
the problem.
I have run fstrim and it does temporarily return some disk space, but not enough. Oh, I should add that I
moved /usr/portage/distfiles to another SSD that basically only a storage device at this time. It
originally intended as my first attempt at RAID. I decided not to make the effort.
If I rebuild I'll have to try LVM or EVMS!
TIA
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ASPushkin
"In a time of universal deceit - telling the truth is a revolutionary act." -- George Orwell |
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eccerr0r
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Joined: 01 Jul 2004
Posts: 9679
Location: almost Mile High in the USA
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| Posted: Fri Apr 21, 2017 5:02 am Post subject: |
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I have a 180G and 240G SSDs for two of my computers. I still have plenty of space on them.
You do need to make sure things are cleaned up:
eclean distfiles ### Remove distfiles that are not related to a ebuild
emerge -p --depclean ### uninstall excess packages.
and cleaning up your $PORTAGE_TMPDIR
Often your /usr/src gets filled up with tons of kernels which are 1GB or so a piece. After depcleaning those kernels, you may still need to remove the directories. A lot of people end up with a lot of crap here along with distfiles that can no longer be used by portage.
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54234
Location: 56N 3W
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| Posted: Fri Apr 21, 2017 8:52 am Post subject: |
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A.S. Pushkin,
fstrim is a SSD speed up, it does not free any space on your filesystems.
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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szatox
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Joined: 27 Aug 2013
Posts: 3134
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| Posted: Fri Apr 21, 2017 7:18 pm Post subject: |
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Ehm... Can you actually describe your problem?
Something is clearly not working, but I really can't see what are you stuck at.
cat /etc/fstab and df -h are likely to make a good start. |
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A.S. Pushkin
Guru
Joined: 09 Nov 2002
Posts: 418
Location: dx/dt, dy/dt, dz/dt, t
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| Posted: Sat Apr 22, 2017 12:16 am Post subject: SSD problems |
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Thanks for the responses. I had thought fstrim was to clean out locations on the SSD that were vacated.
What appears to be happening is that the space is simply filling up. I actually moved distfiles to another drive,
updating make.conf to reflect that.
Also, thank you for shining light on the difference between eclean and emerge --dpclean!
| Code: | #df -h
/dev/sda4 220G 205G 4.0G 99% /
tmpfs 3.2G 1.3M 3.2G 1% /run
dev 10M 0 10M 0% /dev
shm 16G 0 16G 0% /dev/shm
cgroup_root 10M 0 10M 0% /sys/fs/cgroup
/dev/sda2 120M 93M 19M 84% /boot
/dev/sdb1 269G 244G 15G 95% /home
/dev/sdb2 7.6G 118K 7.2G 1% /tmp
/dev/sdb3 7.7G 2.1G 5.2G 29% /var
/dev/sdc 118G 15G 97G 14% /mnt
none 16G 20K 16G 1% /run/user/1000
/dev/sdd2 437G 205G 210G 50% /run/media/pushkin/389cf391-5608-4b9f-be33-84939c3f37f2
/dev/sdd1 481G 200G 257G 44% /run/media/pushkin/9a84a5b7-8b2f-48ab-a5a8-6bf68365a6b7 |
/dev/sda - - Samsung 850 PRO - 256GB
/dev/sdb -- Seagate Baracuda - 320GB
/dev/sdd -- Seagate in my hotswap rack - 1TB
/dev/sdc -- Samsung 850 Pro - 128GB
/var and /tmp were recently relocated to the Baracuda in hopes this might help.
Here's my current fstab:
| Code: | UUID="c09f10fc-8dcc-48cb-b237-2135eb544514" /boot ext4 defaults,relatime 0 0
/dev/sda3 swap swap sw 0 0
UUID="e400e7d8-be6e-4284-9625-b281694a7271" / ext4 rw,relatime,data=ordered 0 1
UUID="30276bde-79de-4990-a5ff-8b9841c3a23a" /home ext4 rw,relatime,data=ordered 0 1
UUID="d1309034-a07d-422b-afe5-96e736bf91b0" /tmp ext4 rw,relatime,data=ordered 0 1
UUID="0d7a6b5c-f564-4c4f-8551-3f4e8442dead" /var ext4 rw,relatime,data=ordered 0 1
UUID="aeeb963e-d6b9-44c5-99c2-2cefeb6ee318" /mnt ext4 rw,relatime,data=ordered 0 1
shm /dev/shm tmpfs nodev,nosuid,noexec 0 0
tmpfs /shm tmpfs defaults,nosuid,size=1024M,mode=1777 0 0
/dev/sr0 /media/dvdrom auto noauto,user 0 0 |
After runningDeVeDeNG /dev/sda4 goes to 100% used. fstrim returns:
fstrim -v /
/: 10.1 GiB (10884395008 bytes) trimmed
Many thanks.
code tags added by NeddySeagoon
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ASPushkin
"In a time of universal deceit - telling the truth is a revolutionary act." -- George Orwell |
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eccerr0r
Watchman
Joined: 01 Jul 2004
Posts: 9679
Location: almost Mile High in the USA
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| Posted: Sat Apr 22, 2017 12:33 am Post subject: |
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Hmm. DeVeDeNG is a DeVeDe NextGeneration video DVD creator, which I wasn't aware of... As it's a video program, well, video programs tend to work with large files.
If that program is randomly creating a lot of junk files somewhere, well, will need to clean them up.
You could use 'du' to see if there are any big directories to see where it's dumping junk files that should be cleaned up. If you have GNOME installed, you could use 'baobab' as a GUI to show what directories are eating tons of disk space, just let it analyze your disk and hover your mouse over the big sectors to see what directories are chewing up your disk. The center of the circle graph is your root or whatever you selected as your startpoint, and the whole circle represents all of the data (empty space is not drawn).
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Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
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Jaglover
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Joined: 29 May 2005
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54234
Location: 56N 3W
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| Posted: Sat Apr 22, 2017 9:34 am Post subject: |
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A.S. Pushkin,
| Code: | #df -h
/dev/sda4 220G 205G 4.0G 99% / |
That's the working parts of your system. As you have /home and /tmp outside of that, nothing a user does should put anything like that amount of data there.
However, if you regularly run things as the root user, roots home directory is /root (not /home/root)
Its a bad thing to run as root for lots of reasons.
The portage user also uses space here for logs and building, which I've described in another thread.
A few portage things grow without limit ... until you prune them.
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Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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frostschutz
Advocate
Joined: 22 Feb 2005
Posts: 2977
Location: Germany
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| Posted: Sat Apr 22, 2017 11:14 am Post subject: |
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| Jaglover wrote: | | Code: | | du -xh --max-depth=1 / |
Then dive into directories of interest. |
in case there are files hidden under other mountpoints (copied stuff to /home while /home wasn't mounted etc.)
| Code: |
mkdir /mnt/root
mount --bind / /mnt/root
ncdu /mnt/root/
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54234
Location: 56N 3W
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| Posted: Sat Apr 22, 2017 11:21 am Post subject: |
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frostschutz,
Well caught. Does that work with
| Code: | | /dev/sdc 118G 15G 97G 14% /mnt |
?
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Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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Zucca
Moderator
Joined: 14 Jun 2007
Posts: 3343
Location: Rasi, Finland
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| Posted: Sat Apr 22, 2017 11:34 am Post subject: |
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| Jaglover wrote: | | Code: | | du -xh --max-depth=1 / |
Then dive into directories of interest. |
I'll add another choice here which I have found useful:
I use ncdu frequently to keep an eye on growing directories. It's also possible to delete directories and files via its UI.
I guess Midnight Commander could also fit for the purpose. |
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frostschutz
Advocate
Joined: 22 Feb 2005
Posts: 2977
Location: Germany
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| Posted: Sat Apr 22, 2017 12:05 pm Post subject: |
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| NeddySeagoon wrote: | Well caught. Does that work with
| Code: | | /dev/sdc 118G 15G 97G 14% /mnt |
? |
Well, yes. It works. Nevertheless, feel free to replace /mnt/root with anything that's convenient.
Maybe I'm too old but I dislike /mnt being used directly... it's always /mnt/somename for me.  |
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A.S. Pushkin
Guru
Joined: 09 Nov 2002
Posts: 418
Location: dx/dt, dy/dt, dz/dt, t
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| Posted: Tue May 09, 2017 1:55 pm Post subject: Be careful where you copy files! |
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Elsewhere on the forum | Quote: | | Excessive trim [SOLVED] |
I post what I learned about lost disk space.. I learned that /media and /run/media
are not the same. I'm still working on issues related to my current post, but once I deleted
files I had copied to /media and and my base drive all lost disk space was returned
and DeVeDeng was up and running. It is my goto DVD application, but seems not to allow the user
to select location for temporary files.
By the way, Zucca and frostschutz, thanks for the tip on ncdu!
I'll have to take the lead from your posts and correct my mount at /mnt. I used it as I was
unsure just how to permanently mount the SSD where I'm storing my distfiles.
Thank you!
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ASPushkin
"In a time of universal deceit - telling the truth is a revolutionary act." -- George Orwell |
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