every week new xfs errors

every week new xfs errors

[Reinoud Koornstra]

Hi Everyone,

I am running xfs on a SSD.
smartd reports this:

Device: /dev/sdb [SAT], Crucial_CT256M550SSD3, S/N:15020ED48DF8,
WWN:5-00a075-10ed48df8, FW:MU02, 256 GB

I am running a compiled linux 4.1.6 kernel (before 4.1.2 and before
that 3.18.x) on ubuntu 14.04
xfs_repair had issues mostly every week to report.
Now xfs_repair says it's finally clean.
However:

reinoud@Mipam:/$ sudo xfs_db -r /dev/sdb1
xfs_db> frag
Metadata CRC error detected at block 0x773cac0/0x1000
Metadata CRC error detected at block 0xee79570/0x1000
Metadata CRC error detected at block 0x165b6020/0x1000
actual 2891336, ideal 2888294, fragmentation factor 0.11%

There are still issue.
Are there problems with running xfs on a SSD in general?
It's fast and stable (seems like), but mostly i start noticing
problems when i'm running git operations that fail, after that
xfs_repair reports issues indeed.

How can i fix these error reported here or can't i fix them?
Thanks,

Reinoud.

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Re: every week new xfs errors

[Dave Chinner]

On Thu, Sep 03, 2015 at 02:55:56PM -0600, Reinoud Koornstra wrote:
> Hi Everyone,
> 
> I am running xfs on a SSD.
> smartd reports this:
> 
> Device: /dev/sdb [SAT], Crucial_CT256M550SSD3, S/N:15020ED48DF8,
> WWN:5-00a075-10ed48df8, FW:MU02, 256 GB
> 
> I am running a compiled linux 4.1.6 kernel (before 4.1.2 and before
> that 3.18.x) on ubuntu 14.04
> xfs_repair had issues mostly every week to report.
> Now xfs_repair says it's finally clean.
> However:
> 
> reinoud@Mipam:/$ sudo xfs_db -r /dev/sdb1
> xfs_db> frag
> Metadata CRC error detected at block 0x773cac0/0x1000
> Metadata CRC error detected at block 0xee79570/0x1000
> Metadata CRC error detected at block 0x165b6020/0x1000
> actual 2891336, ideal 2888294, fragmentation factor 0.11%

You're running on a mounted filesystem? (the "-r" is only
necessary if the fs is mounted) If so, this is expected.

> There are still issue.
> Are there problems with running xfs on a SSD in general?
> It's fast and stable (seems like), but mostly i start noticing
> problems when i'm running git operations that fail, after that
> xfs_repair reports issues indeed.

Perhaps you'd like to start by reporting these issues, as solving
them is far more important that what the (useless) frag command
reports. Start here:

http://xfs.org/index.php/XFS_FAQ#Q:_What_information_should_I_include_when_reporting_a_problem.3F


Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

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