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gaebb3r
n00b
Joined: 22 Oct 2007
Posts: 58
Location: 48°31′N, 9°3′E
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 Posted: Sun Apr 01, 2012 9:49 am Post subject: ext4 discard flag, trim on Intel 520 SSD |
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Hey together,
I have now set up my Gentoo on an Intel 520 SSD with a capacity of 60 GB.
Linux is booting extremely fast and quiet, just as expected. 
The filesystem for both - / and /boot - is ext4 which allows to enable trim on the SSD as native option. But before I enable this I need to know if this is already stable in order to prevent data loss.
Is any of you already using this trim command and wants to share his/her experience?
| Code: | agph mw # cat /etc/fstab | grep /dev/sda
/dev/sda1 /boot ext4 defaults,noatime,data=ordered 1 1
/dev/sda3 / ext4 defaults,noatime,data=ordered 1 1
/dev/sda2 swap swap defaults 0 0 |
Many thanks for your help!
Cheers
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AMD Threadripper 2920X - X399 Designaire - 16384 MB |
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geki
Advocate
Joined: 13 May 2004
Posts: 2387
Location: Germania
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| Posted: Sun Apr 01, 2012 10:07 am Post subject: |
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running since july 2011 - operating 24/7. survived some power-outages. so, nothing experienced so far ... luckily?! 
| Quote: | /dev/sda1 /boot ext4 discard,noauto,noatime,nodiratime 1 2
/dev/sda2 / ext4 discard,noatime,nodiratime 0 1 |
added nodiratime - being paranoid. 
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hear hear |
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asturm
Developer
Joined: 05 Apr 2007
Posts: 8935
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| Posted: Sun Apr 01, 2012 10:14 am Post subject: |
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| I think trim support exists since 2.6.32 or so, it'd better be stable then by now |
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gaebb3r
n00b
Joined: 22 Oct 2007
Posts: 58
Location: 48°31′N, 9°3′E
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| Posted: Sun Apr 01, 2012 11:18 am Post subject: |
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| geki wrote: | | added nodiratime - being paranoid. |
Thanks for this "hint"...
Which kind (manufacturer, type) of SSDs do you all use?
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AMD Threadripper 2920X - X399 Designaire - 16384 MB |
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asturm
Developer
Joined: 05 Apr 2007
Posts: 8935
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| Posted: Sun Apr 01, 2012 11:39 am Post subject: |
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Got an Intel SSD 311 Series (SLC) in our server system, ext4 on it, since about half a year without issues.
Personally, I've put a Seagate Momentus XT 500 into my Laptop, it's got a 4GB OS-agnostic SLC cache inside. I still prefer that as a good fast access/data storage compromise when there's just one hdd slot available.
EDIT: discard is set as default anyway! |
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geki
Advocate
Joined: 13 May 2004
Posts: 2387
Location: Germania
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| Posted: Sun Apr 01, 2012 12:24 pm Post subject: |
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got an intel 520 / 120gb
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EatMeerkats
Apprentice
Joined: 15 Mar 2006
Posts: 234
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| Posted: Sun Apr 01, 2012 2:04 pm Post subject: |
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| geki wrote: | running since july 2011 - operating 24/7. survived some power-outages. so, nothing experienced so far ... luckily?!
| Quote: | /dev/sda1 /boot ext4 discard,noauto,noatime,nodiratime 1 2
/dev/sda2 / ext4 discard,noatime,nodiratime 0 1 |
added nodiratime - being paranoid. |
Noatime implies nodiratime: http://lwn.net/Articles/245002/ |
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