Mailinglist Archive: opensuse (686 mails)

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Re: [opensuse] SSD and smartctl: Percentage Used Endurance Indicator: 34 ?
  • From: "Carlos E. R." <robin.listas@xxxxxxxxxxxxxx>
  • Date: Sat, 6 Jul 2013 20:11:21 +0200 (CEST)
  • Message-id: <alpine.LNX.2.00.1307062004400.6576@Telcontar.valinor>
Hash: SHA1

On Saturday, 2013-07-06 at 14:30 +0200, MarkusGMX wrote:

Are there some possibilies that smartctl may warn me at
-say- "90~ Percentage Used Endurance Indicator" without making my own cron job and some script?

Eummm... maybe... there is an smartd daemon, it might do that, either on its own, or by some configuration parameter. I would have to read the manual again to be certain ;-)

By default, smartd warns of impending disaster on the following 24 hours, I have seen that happen. It triggers when a parameter passes the trigger point, but it is defined by the manufacturer.

You can increase the odds. Be sure to mount "noatime", for instance.

Currently on this SSD:
swap is on this SSD
/boot ext4 acl,user_xattr 1 2
/var ext4 acl,user_xattr 1 2
/windows/B ntfs-3g fmask=133,dmask=022,locale=en_GB.UTF-8 0 0
where /windows/B is the 100MB boot partition of Windows 7

The mounting options were done by SuSE 12.1 out of the box.

If you issue the command "mount" you see the actual options used. I think "relatime" is on by default.

Most of the access/write will be /var and swap I assume.
/boot and /windows/B won't be much writing but that doesn't
matter if the SSD fails.

So the /var needs a noatime in /etc/fstab ?
Is there some possible improvement for swap ?
Does the newer SuSE 12.3 improve the mounting options for SSDs when installing 12.3 ?

Not that I know.

There is another possibility, using "laptop-mode-tools". The setting it changes are more for power saving on laptops, but some of those settings are useful for SSD, because it means delaying disk writes even for minutes. The log is written to often. I think there is an automatic write from the kernel about every 7 seconds or so.

This is not really a test; it is the disk itself who is telling you that
parameter about itself.

So it has to be somehow accurate.


- -- Cheers,
Carlos E. R.
(from 12.3 x86_64 "Dartmouth" at Telcontar)

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