2
votes
1answer
54 views

How to add partition table to existing EXT4 filesystem

I have software RAID6 on 8x3TB disks (18TB), there is filesystem od device /dev/md1, but EXT4 can`t be bigger than 16TB so there is 2TB of free space. I would like to use this space. My first idea was ...
1
vote
2answers
432 views

Are ext4 RAID5 tuning options useful under LVM?

I'm setting up a system with a system with a mdadm RAID5 which is the sole PV for a VG which hosts 4 LVs. When I make the filesystem, would the mkfs.ext4 -E option be useful? Or is its effect not ...
4
votes
2answers
2k views

Can't resize2fs - combination of flex_bg and !resize_inode

I recently set up my first software raid with mdadm and after adding more disks to the raid I am unable to resize the filesystem to the full size of the raid. I created a single (~16TB) filesystem on ...
1
vote
2answers
346 views

Relabeling of filesystems (SELinux) fails

After compiling the policy modules and re-compiling my core packages (Gentoo 32bit) I wanted to relabel the filesystems (via rlpkg -a -r) and packages but I get these error messages: Relabeling ...
5
votes
3answers
2k views

Convert a software raid volume from ext3 to ext4 (or ext2)?

I have an mdadm created software raid volume in my ubuntu linux 11 machine. It is NOT the boot drive. It is a software raid 5 configuration made from 3 large sata drives. When I created it ...
-1
votes
1answer
181 views

Help, ive just corrupted my ext4 partition

After troubleshooting problems with my mdadm config and kernel settings for about a week now i got careless and left my data drives plugged in after a successful boot test. i was attempting to change ...
5
votes
2answers
4k views

Ext4 superblock corrupted after successful(?) mdadm grow and resize2fs

Some system details AMD Phenom II X6 1090T, 16GB DDR3 1600 running 11.04 natty, 2.6.38-8-server Raid in question consists of 5 SATA drives; 4 Samsung, 1 Western Digital; 500 GB each Drives are ...
0
votes
2answers
2k views

mdadm lvm and ext4 slowness - How can I speed it up?

I can't figure out why I'm getting such terrible times out of my mdadm and in particular the lvm partitions in it. I made the raid: mdadm --create --verbose /dev/md0 --level=5 --chunk=1024 ...
1
vote
1answer
1k views

How to make partition, raid5 and filesystem on 6x2TB WDC-drives in Linux

I'm getting confused by this "Advanced Format" (4KB sectors) talk of bigger (2TB) drives - and I am wondering about how I would resolve this if I'm building a new software (mdadm) RAID-5 array. The ...
2
votes
2answers
8k views

How to check (fsck) a filesystem on a md device (linux/mdadm)

I have a partition lying on a software raid device, /dev/md4 On boot, fsck fails and the partiton cannot be mounted. Trying to fsck manually, I get an error: sudo fsck /dev/md4 fsck from ...
4
votes
2answers
3k views

Failed MDADM Array With Ext.4 Partition - “e2fsck: unable to set superblock flags on /dev/md0”

Had a power failure and now my mdadm array is having problems. sudo mdadm -D /dev/md0 [hodge@hodge-fs ~]$ sudo mdadm -D /dev/md0 /dev/md0: Version : 0.90 Creation Time : Sun ...