It always uses the catalog, even though you are doing full dumps it updates the catalog so you can do incremental in the future.
It also knows where the backups were stored and where to restore them by default.


  Original Message  
From: ToddAndMargo
Sent: Sunday, May 15, 2016 04:16
To: [log in to unmask]
Subject: Re: What is this xfadump error?

>> Original Message
>> From: ToddAndMargo
>> Sent: Saturday, May 14, 2016 20:37
>> To: [log in to unmask]
>> Subject: What is this xfadump error?
>>
>> Hi All,
>>
>> $ rpm -qa \*xfsdump\*
>> xfsdump-3.1.4-1.el7.x86_64
>>
>> What is the meaning of this xfsdump error. There is
>> no /dev/sda on this system at the moment.
>>
>> # /usr/sbin/xfsdump -v verbose -M 1 -L 1 -l 0 -f
>> /lin-bak/2016-05-14_15-49-55_homeXfsDump /home
>>
>> /usr/sbin/xfsdump: dumping non-directory files
>> WARNING: Your hard drive is failing
>> Device: /dev/sda [SAT], unable to open device
>> /usr/sbin/xfsdump: ending media file
>> /usr/sbin/xfsdump: media file size 453262590208 bytes
>> /usr/sbin/xfsdump: dump size (non-dir files) : 453181559704 bytes
>> /usr/sbin/xfsdump: dump complete: 5404 seconds elapsed
>> /usr/sbin/xfsdump: Dump Summary:
>> /usr/sbin/xfsdump: stream 0 /lin-bak/2016-05-14_15-49-55_homeXfsDump
>> OK (success)
>> /usr/sbin/xfsdump: Dump Status: SUCCESS
>>
>>
>> And it succeeded!
>>
>> /home is on /dev/sdb3
>> /lin-bak is /dev/sdc1
>>
>> Really!
>>
>> # fdisk -l /dev/sda
>> fdisk: cannot open /dev/sda: No such file or directory
>>
>> Any idea?
>>
>> Many thanks,
>> -T


On 05/14/2016 09:58 PM, [log in to unmask] wrote:
> Sounds like your hard drive or the controller are having issues‎.
> By any chance is/var‎ on sda. XFSdump keeps a catalog in /var/lib/xfs which is used for incremental backups.
> I know this because about 3 or 4 years ago I had to file a bug ticket with Red Hat for RHEL 6 about improper selinux contexts on that directory.
>
>

Hi Rrmarino,

It is not an incremental dump. But .... It is two removable
backups in a row. Due to this bug

https://bugzilla.redhat.com/show_bug.cgi?id=1257018

The backup drive mounts on /dev/sda the first time,
gets removed and the second drive mounts on /dev/sdc.
This error occurred on the second drive.

Maybe it is using this catalog?

-T


-- 
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Computers are like air conditioners.
They malfunction when you open windows
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