[lustre-discuss] Lustre 2.15.1 change log

[Simon Guilbault]

Hi, the grant_shrink bug was fixed in 2.15.0 according to this JIRA:
https://jira.whamcloud.com/browse/LU-14124

On Fri, Sep 30, 2022 at 3:59 AM Tung-Han Hsieh <
thhsieh at twcp1.phys.ntu.edu.tw> wrote:

> Dear Peter,
>
> Thank you very much for your prompt reply.
>
> Actually we just encountered OST file server freezed a few hours ago,
> which installed Lustre-2.15.0 + zfs-2.0.7. Unfortunately all the kernel
> and event logs were lost. So we don't know what's going on.
>
> This system was upgraded to Lustre-2.15.0 + zfs-2.0.7 two days ago.
> Before that it runs Lustre-2.12.6 + zfs-0.7.13 smoothly for two years.
> So we suspected that this system crash was due to the Lustre upgrade.
> To take some actions, we just upgraded the system to Lustre-2.15.1 +
> zfs-2.0.7, and hope that it could run without problem.
>
> By the way, we did see some minor error messages in dmesg when mounting
> MDT and OST in the MDT and OST servers, respectively, with Lustre-2.15.0
> and 2.15.1:
>
> [ 1049.086838] systemd-udevd[6131]: Process '/usr/sbin/lctl set_param
> 'osc.*.grant_shrink=1'' failed with exit code 2.
>
> I guess this command should be run in the clients, but not valid in MDT
> and OST. Our /etc/udev/rules.d/99-lustre.rules reads:
>
> ========================================================================
> KERNEL=="obd", MODE="0666"
>
> # set sysfs values on client
> SUBSYSTEM=="lustre", ACTION=="change", ENV{PARAM}=="?*",
> RUN+="/usr/sbin/lctl set_param '$env{PARAM}=$env{SETTING}'"
> # setup linux routes for mr on lustre load
> SUBSYSTEM=="module", ACTION=="add", DEVPATH=="/module/lustre",
> RUN+="/usr/sbin/lnetctl setup-mrrouting"
> ========================================================================
>
> and /etc/udev/rules.d/99-lustre-server.rules reads:
>
> ========================================================================
> # Ensure block devices re-added to the system allow for large writes
> (LU-9551)
> # Currently applies only to ldiskfs-formatted devices
> ACTION!="add|change",    GOTO="l_tunedisk_end"
> SUBSYSTEM!="block",      GOTO="l_tunedisk_end"
> ENV{ID_FS_TYPE}!="ext4", GOTO="l_tunedisk_end"
>
> ENV{ID_FS_LABEL}=="MGS|*-MDT*|*-OST*", RUN+="/usr/sbin/l_tunedisk /dev/%k"
>
> LABEL="l_tunedisk_end"
> ========================================================================
>
> Further, when running Lustre-2.12.6 + zfs-0.7.3, we have to manually set
>
>         lctl set_para osc.*.grant_shrink=0
>
> in order to maintain reasonable performance when transferring large files.
> Is it necessary to do that for Lustre-2.15.X + zfs-2.0.7 ?
>
>
> Cheers,
>
> T.H.Hsieh
>
>
> On Fri, Sep 30, 2022 at 07:18:53AM +0000, Peter Jones wrote:
> > There is a general problem with the Lustre.org wiki ATM. Hopefully
> service will be restored shortly. In the meantime is there a specific piece
> of information that you wanted to know? The list of fixed issues is also
> available in JIRA for example -
> https://jira.whamcloud.com/secure/ReleaseNote.jspa?projectId=10000&version=15891
> >
> > ???On 2022-09-30, 12:09 AM, "lustre-discuss on behalf of Tung-Han Hsieh"
> <lustre-discuss-bounces at lists.lustre.org on behalf of
> thhsieh at twcp1.phys.ntu.edu.tw> wrote:
> >
> >     Dear All,
> >
> >     Could anyone point out where to find the Lustre-2.15.1 change log ?
> >
> >     This URL found in Lustre website is invalid:
> >
> >     https://wiki.lustre.org/Lustre_2.15.1_Changelog
> >
> >     Thank you very much.
> >
> >
> >     T.H.Hsieh
> >     _______________________________________________
> >     lustre-discuss mailing list
> >     lustre-discuss at lists.lustre.org
> >     http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
> >
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