mkfs.ext4 command is hanging after creating a LVM volume in rhel 6.5

smilemukul · 02-17-2014, 04:22 AM

HI,

mkfs.ext4 command is hanging after creating a LVM volume in rhel 6.5 but works fine in rhel 5.6.

Also getting messagees as "hung_task_timout_secs" for mkfs.ext4 on another console & the system hangs soon after these messages and had to be rebooted. This issue is accuring
repetatively only in rhel 6.5

Appreciate for any early response.

smilemukul · 02-17-2014, 04:32 AM

Hi,

Is there any other filesystem format utilities other then mkfs for ext4 which is inbuid in redhat

syg00 · 02-17-2014, 05:18 AM

Code:

cat /proc/filesystems

More than you ever imagined ...

EDIT: might have misread that - try typing mkfs then hit the <tab> key twice in quick succession.

pan64 · 02-17-2014, 05:22 AM

every filesystem has only one (dedicated) mkfs utility. but you can use external tools like easeus partition manager to create filesystems. Why do you need another one?

smilemukul · 02-17-2014, 05:22 AM

No, I mean by other linux format tools other then mkfs.

smilemukul · 02-17-2014, 05:24 AM

Actually I am having issue with mkfs so I want to use other filesystem tools.

pan64 · 02-17-2014, 07:04 AM

http://www.linuxquestions.org/questi...-a-4175495195/

pan64 · 02-17-2014, 07:05 AM

you would need to present all the steps you have made. Also you can request official support from redhat.

smilemukul · 02-17-2014, 07:10 AM

Both request are different, please dont relate with one another.

jpollard · 02-17-2014, 07:21 AM

Quote:

Originally Posted by smilemukul

Actually I am having issue with mkfs so I want to use other filesystem tools.

mkfs itself isn't a filesystem tool. All it does is route to the specific tool for the given filesystem. Most of them are mkfs.<filesystem name> due to the history of filesystems.

You haven't said what your issue with mkfs is, so nobody can help.

michaelk · 02-17-2014, 08:46 AM

http://www.linuxquestions.org/questi...-a-4175495195/

jpollard · 02-17-2014, 11:37 AM

mkfs.ext4 doesn't create a LVM.

for mkfs to hang means the underlying partition is bad (actually, the LVM is not responding).

During the filesystem creation, mkfs initializes the journal, inode list, superblocks, alternate/backup superblocks, allocation bitmaps... If one of these writes hangs/fails... the underlying partition has failed.

So this is a LVM problem.

smilemukul · 02-17-2014, 11:13 PM

Thanks but I am able to make a fresh installation of RHEL 5.6 and format the partition with ext4 but this is failing in RHEL 6.5 installation with the same underlying hardware where the command is hanging on "writing superblocks and filesystem accounting information".

jpollard · 02-18-2014, 06:54 AM

That still doesn't prevent it from being an LVM problem.

Did you recreate the LVM using 6.5?