if you loaded new kernel you will need to re-install PowerPath and might have to manually rename powerpath devices to match what they used to be before. (emcpowerX)
I use Powerpath , Linux , I just reboot , I check my devices they all are ok execpt three devices , I could not mount it , there is no logical name emcpowerad >> emcpowerad1 does that mean I lost my devices
1)Linux smsc 2.6.18-53.el5 #1 SMP Sat Nov 10 19:37:22 EST 2007 x86_64 x86_64 x86_64 GNU/Linux
2) symmetrix 1000 ######################## 3)the fstab contains example :/dev/sda1 /u01 we change it to /dev/emcpowera1 /u01 will this step solve the problem ?
i see that you are on RHEL5 and why dont make use of LVM?
if /dev/sdr1 is mentioned in fstab that is a partion rather than disk. fdisk should work on /dev/sdr.
If any chance your device file /dev/sdxx or emcpowerx changed then with LVM you can sustain that or you should have a LABEL to each partition.
The one logic to identify the old and the new device is look at the old " powermt display dev=all" output you have and look for Logical device ID. This ID always remains constant.
Or try to make out which LUN was used and look at " powermt display dev=all" to get the new /dev/sdxx or emcpowerx .
dynamox
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November 17th, 2008 05:00
bodnarg
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385 Posts
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November 17th, 2008 05:00
1) What OS?
2) Are you running PowerPath or any sort of multipathing software in this environment?
3) Are we talking Symmetrix or Clariion storage for the EMC drives?
Thanks.
mohammad_hantas
29 Posts
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November 17th, 2008 06:00
I use Powerpath , Linux , I just reboot , I check my devices they all are ok execpt three devices , I could not mount it , there is no logical name emcpowerad >> emcpowerad1
does that mean I lost my devices
huniedi
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118 Posts
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November 18th, 2008 04:00
2) symmetrix 1000
########################
3)the fstab contains example :/dev/sda1 /u01
we change it to /dev/emcpowera1 /u01
will this step solve the problem ?
SKT2
2 Intern
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1.3K Posts
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December 11th, 2008 10:00
if /dev/sdr1 is mentioned in fstab that is a partion rather than disk. fdisk should work on /dev/sdr.
If any chance your device file /dev/sdxx or emcpowerx changed then with LVM you can sustain that or you should have a LABEL to each partition.
The one logic to identify the old and the new device is look at the old " powermt display dev=all" output you have and look for Logical device ID. This ID always remains constant.
Or try to make out which LUN was used and look at " powermt display dev=all" to get the new /dev/sdxx or emcpowerx .