8:02 a.m.
In a test Lustre 2.4.0 filesystem we are running into difficulties
viewing the changelogs on the mds. Is there something I'm doing wrong
here? There are two clients registered, and I can see the current index
increment when I perform file creates/unlinks.
Any help would be greatly appreciated!
[root@sultan-mds1 ~]# lfs changelog lustre-MDT0000
can't find fs root for '(null)': -19
Can't open lustre-MDT0000: -19
Can't start changelog: No such device
[root@sultan-mds1 ~]# cat /proc/fs/lustre/mdd/lustre-MDT0000/changelog_users
current index: 120819
ID index
cl1 2962
cl2 2962
[root@sultan-mds1 ~]# lctl get_param mdd.*.changelog_mask
mdd.lustre-MDT0000.changelog_mask=
MARK CREAT MKDIR HLINK SLINK MKNOD UNLNK RMDIR RENME RNMTO OPEN LYOUT
TRUNC SATTR XATTR HSM MTIME CTIME
[root@sultan-mds1 ~]# tunefs.lustre --dryrun /dev/sda2
checking for existing Lustre data: found
Reading CONFIGS/mountdata
Read previous values:
Target: lustre-MDT0000
Index: 0
Lustre FS: lustre
Mount type: ldiskfs
Flags: 0x1
(MDT )
Persistent mount opts: user_xattr,errors=remount-ro
Parameters: mgsnode=10.37.248.68@o2ib1 sys.timeout=100
Permanent disk data:
Target: lustre-MDT0000
Index: 0
Lustre FS: lustre
Mount type: ldiskfs
Flags: 0x1
(MDT )
Persistent mount opts: user_xattr,errors=remount-ro
Parameters: mgsnode=10.37.248.68@o2ib1 sys.timeout=100
exiting before disk write.
8:57 a.m.
On Sep 11, 2013, at 6:02 PM, Blake Caldwell <blakec(a)ornl.gov>
wrote:
[root@sultan-mds1 ~]# lfs changelog lustre-MDT0000
can't find fs root for '(null)': -19
Can't open lustre-MDT0000: -19
Can't start changelog: No such device
Does this command need to be run on the client instead of the server? The manual
doesn't make it very clear, but some of the examples I have seen show "lfs
changelog" running on a system that is not the MDS.
--
Rick Mohr
Senior HPC System Administrator
National Institute for Computational Sciences
http://www.nics.tennessee.edu
9:45 a.m.
Yes, I believe it needs to be run on a lustre client.
On 09/11/2013 03:57 PM, Mohr Jr, Richard Frank (Rick Mohr) wrote:
On Sep 11, 2013, at 6:02 PM, Blake Caldwell <blakec(a)ornl.gov>
wrote:
> [root@sultan-mds1 ~]# lfs changelog lustre-MDT0000
> can't find fs root for '(null)': -19
> Can't open lustre-MDT0000: -19
>
> Can't start changelog: No such device
Does this command need to be run on the client instead of the server? The manual
doesn't make it very clear, but some of the examples I have seen show "lfs
changelog" running on a system that is not the MDS.
4:33 p.m.
This is correct. You also should add the changelog consumer I'd to your LFS
changelog command.
On Sep 11, 2013 5:46 PM, "Christopher J. Morrone" <morrone2(a)llnl.gov>
wrote:
Yes, I believe it needs to be run on a lustre client.
On 09/11/2013 03:57 PM, Mohr Jr, Richard Frank (Rick Mohr) wrote:
>
> On Sep 11, 2013, at 6:02 PM, Blake Caldwell <blakec(a)ornl.gov>
> wrote:
>
> [root@sultan-mds1 ~]# lfs changelog lustre-MDT0000
>> can't find fs root for '(null)': -19
>> Can't open lustre-MDT0000: -19
>>
>> Can't start changelog: No such device
>>
>
>
> Does this command need to be run on the client instead of the server?
> The manual doesn't make it very clear, but some of the examples I have
> seen show "lfs changelog" running on a system that is not the MDS.
>
>
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7:29 p.m.
Ah, that's it. 'lfs changelog lustre-MDT00000 cl1' works from the client.
Thanks,
Blake
On Sep 12, 2013, at 2:33 AM, Colin Faber
<cfaber@gmail.com<mailto:cfaber@gmail.com>> wrote:
This is correct. You also should add the changelog consumer I'd to your LFS changelog
command.
On Sep 11, 2013 5:46 PM, "Christopher J. Morrone"
<morrone2@llnl.gov<mailto:morrone2@llnl.gov>> wrote:
Yes, I believe it needs to be run on a lustre client.
On 09/11/2013 03:57 PM, Mohr Jr, Richard Frank (Rick Mohr) wrote:
On Sep 11, 2013, at 6:02 PM, Blake Caldwell
<blakec@ornl.gov<mailto:blakec@ornl.gov>>
wrote:
[root@sultan-mds1 ~]# lfs changelog lustre-MDT0000
can't find fs root for '(null)': -19
Can't open lustre-MDT0000: -19
Can't start changelog: No such device
Does this command need to be run on the client instead of the server? The manual
doesn't make it very clear, but some of the examples I have seen show "lfs
changelog" running on a system that is not the MDS.
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4 comments
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participants (5)
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Blake Caldwell -
Caldwell, Blake A.
-
Christopher J. Morrone -
Colin Faber -
Mohr Jr, Richard Frank (Rick Mohr)