last xfs_repair time?

last xfs_repair time?

[Lars Damerow]

Hi folks,

Is it possible to query XFS for the last time xfs_repair fixed a
filesystem? I've been searching the man pages and haven't found anything
useful.

thanks!
-lars

--
lars r. damerow :: button pusher :: pixar animation studios
<lars@pixar.com>

Re: last xfs_repair time?

[Timothy Shimmin]

Lars Damerow wrote:
> Hi folks,
> 
> Is it possible to query XFS for the last time xfs_repair fixed a
> filesystem? I've been searching the man pages and haven't found anything
> useful.
> 
> thanks!
> -lars
> 
> --
> lars r. damerow :: button pusher :: pixar animation studios
> <lars@pixar.com>
> 
Not that I know of.
Barry is the repair maintainer/expert though.

--Tim

Re: last xfs_repair time?

[Eric Sandeen]

Timothy Shimmin wrote:
> Lars Damerow wrote:
>> Hi folks,
>>
>> Is it possible to query XFS for the last time xfs_repair fixed a
>> filesystem? I've been searching the man pages and haven't found anything
>> useful.
>>
>> thanks!
>> -lars
>>
>> --
>> lars r. damerow :: button pusher :: pixar animation studios
>> <lars@pixar.com>
>>
> Not that I know of.
> Barry is the repair maintainer/expert though.
> 
> --Tim
> 
> 
AFAIK it doesn't, but that'd be a neat feature - adding space for that,
and maybe date of mkfs (or mkfs version) etc might be nice too.

-Eric

Re: last xfs_repair time?

[Lars Damerow]

>From Eric Sandeen <sandeen@sandeen.net>, Wed, Nov 12, 2008 at 07:11:21PM -0600:
> Timothy Shimmin wrote:
> > Lars Damerow wrote:
> >> Hi folks,
> >>
> >> Is it possible to query XFS for the last time xfs_repair fixed a
> >> filesystem? I've been searching the man pages and haven't found anything
> >> useful.
> >>
> > Not that I know of.
> > Barry is the repair maintainer/expert though.
> > 
> > --Tim
> > 
> > 
> AFAIK it doesn't, but that'd be a neat feature - adding space for that,
> and maybe date of mkfs (or mkfs version) etc might be nice too.

Thanks for the responses! It's handy to have that information
available, especially when you're maintaining hundreds of workstations
whose power cables occasionally get yanked out by their users. :/

Here's what we can get from ext3:

    % sudo dumpe2fs -h /dev/sda1 | grep 2008
    dumpe2fs 1.40.8 (13-Mar-2008)
    Inodes per group:         2008
    Filesystem created:       Thu May 29 11:11:12 2008
    Last mount time:          Tue Sep 30 18:01:18 2008
    Last write time:          Tue Sep 30 18:01:18 2008
    Last checked:             Thu May 29 11:11:12 2008

cheers,
-lars

--
lars r. damerow :: button pusher :: pixar animation studios
<lars@pixar.com>

Re: last xfs_repair time?

[Eric Sandeen]

Lars Damerow wrote:
> From Eric Sandeen <sandeen@sandeen.net>, Wed, Nov 12, 2008 at 07:11:21PM -0600:
>> Timothy Shimmin wrote:
>>> Lars Damerow wrote:
>>>> Hi folks,
>>>>
>>>> Is it possible to query XFS for the last time xfs_repair fixed a
>>>> filesystem? I've been searching the man pages and haven't found anything
>>>> useful.
>>>>
>>> Not that I know of.
>>> Barry is the repair maintainer/expert though.
>>>
>>> --Tim
>>>
>>>
>> AFAIK it doesn't, but that'd be a neat feature - adding space for that,
>> and maybe date of mkfs (or mkfs version) etc might be nice too.
> 
> Thanks for the responses! It's handy to have that information
> available, especially when you're maintaining hundreds of workstations
> whose power cables occasionally get yanked out by their users. :/

So, for what it's worth, power loss should not necessarily require a
repair; as long as you have barriers enabled and/or you're not losing
log writes to a volatile write cache, power loss should never corrupt
the filesystem metadata; that is what the log is for, after all...

-Eric

Re: last xfs_repair time?

[Lars Damerow]

>From Eric Sandeen <sandeen@sandeen.net>, Wed, Nov 12, 2008 at 07:33:25PM -0600:
> So, for what it's worth, power loss should not necessarily require a
> repair; as long as you have barriers enabled and/or you're not losing
> log writes to a volatile write cache, power loss should never corrupt
> the filesystem metadata; that is what the log is for, after all...

Our disks are partitioned with LVM, so we don't have write barriers. We
just recently disabled write caching, though, so our future should be
brighter than it's been. :)

-lars

--
lars r. damerow :: button pusher :: pixar animation studios
<lars@pixar.com>

Re: [xfs] last xfs_repair time?

[Martin Steigerwald]

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Hi!

Lets see whether MailMan lets GPG signature unmangled or whether it is 
something else that mangles it.

Am Donnerstag 13 November 2008 schrieb Lars Damerow:
> From Eric Sandeen <sandeen@sandeen.net>, Wed, Nov 12, 2008 at 
07:33:25PM -0600:
> > So, for what it's worth, power loss should not necessarily require a
> > repair; as long as you have barriers enabled and/or you're not losing
> > log writes to a volatile write cache, power loss should never corrupt
> > the filesystem metadata; that is what the log is for, after all...
>
> Our disks are partitioned with LVM, so we don't have write barriers. We
> just recently disabled write caching, though, so our future should be
> brighter than it's been. :)

I really hope that LVM gets write barrier support for write barrier 
capable targets. Unless it does my notebook will use plain partitions for 
anything but testing filesystems. Otherwise with 2.6.16 back then I 
hardly felt a difference in XFS speed after turning off write caches.

If you like add your vote here:
http://bugzilla.kernel.org/show_bug.cgi?id=9554

Ciao,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7

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Re: last xfs_repair time?

[Barry Naujok]

On Thu, 13 Nov 2008 12:11:21 +1100, Eric Sandeen <sandeen@sandeen.net>  
wrote:

> Timothy Shimmin wrote:
>> Lars Damerow wrote:
>>> Hi folks,
>>>
>>> Is it possible to query XFS for the last time xfs_repair fixed a
>>> filesystem? I've been searching the man pages and haven't found  
>>> anything
>>> useful.
>>>
>>> thanks!
>>> -lars
>>>
>>> --
>>> lars r. damerow :: button pusher :: pixar animation studios
>>> <lars@pixar.com>
>>>
>> Not that I know of.
>> Barry is the repair maintainer/expert though.
>>
>> --Tim
>>
>>
> AFAIK it doesn't, but that'd be a neat feature - adding space for that,
> and maybe date of mkfs (or mkfs version) etc might be nice too.
>
> -Eric

That would sort of fall under the last repair logs still on the todo list.