6 Posts

January 10th, 2008 10:00

We're also having this problem. Just wondering if there's been any update?

3 Apprentice

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423 Posts

January 30th, 2008 05:00

Mounting the PowerPath devices with "_netdev" option permits boot-time fsck on PowerPath pseudo-devices (and also on Logical Volumes created out of PowerPath pseudo-devices). The fsck is performed by S25netfs after network services are up (PowerPath is already started by then).

The fsckorder (6th column on /etc/fstab) may be marked as necessary (a value greater than 0 performs boot-time fsck).

Sample /etc/fstab file:
-----------------------
/dev/VolGroup00/LogVol01 / ext3 defaults 1 1
/dev/emcpowerl /mnt/mnta ext2 _netdev 0 2
/dev/emcpowerd /mnt/mntb ext3 _netdev 0 0
/dev/vg_emcp_xov/lvol0 /mnt/mnto ext2 _netdev 0 3

/dev/vg_emcp_xov/lvol0 is a LV created out of PowerPath pseudo-devices.

It needs to be documented that PowerPath devices should be mounted with "_netdev" option in /etc/fstab to permit boot-time fsck.

The documentation will be updated to reflect this.

9 Legend

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20.4K Posts

January 30th, 2008 06:00

Paul,

is _netdev requirement something new that has to be done with PP5, we have never used _netdev with PP4.5 ..but i wonder if this is something we have to pay attention to when we upgrade to PP5.

Thanks

3 Apprentice

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423 Posts

January 30th, 2008 07:00

Dynamox, this is specific to version 5.x

3 Apprentice

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423 Posts

January 30th, 2008 07:00

This issue has been documented in the Linux 5.1 Release Notes;

These are not available on powerlink as yet..

Message was edited by:
PaulCork

9 Legend

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20.4K Posts

January 30th, 2008 08:00

Thank you

341 Posts

February 4th, 2008 04:00

The PP5.1 release notes are now available on PowerLink: from p30:
===
The _netdev option in /etc/fstab
PowerPath devices should be mounted with "_netdev" option in
/etc/fstab to permit boot-time fsck. For RHEL 5 and 5.1, in an iSCSI
setup, PowerIscsi is run as service S24. This configures the PowerPath
devices and makes them available to S25netfs to perform fsck on
them.
===

9 Legend

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20.4K Posts

February 4th, 2008 10:00

CB,

does it also apply to RHEL 4 with Powerpath 5.1 ?

Thanks

341 Posts

February 4th, 2008 23:00

Hi Dynamox,

the Release notes are non-specific regarding RHEL version, I have checked the OPT that this bug was reported to EMC and it was on the RHEL5 platform... I will do more reseach into previous cases and see if RHEL4 is affected the same way... Will update you shortly.

9 Legend

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20.4K Posts

February 5th, 2008 11:00

great ..thank you

341 Posts

February 6th, 2008 01:00

This seems on only affect RHEL5 with PowerPath 5.x. No previous cases with RHEL4 or earlier...

9 Legend

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20.4K Posts

February 6th, 2008 06:00

great ..thank you for verifying that.
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