Why dumpe2fs returns bad magic number in superblock. Bad magic number in inode while trying to determine heartbeat. Ocfs2 bad magic number oracle linux database users. Bad magic number in superblock while trying to open devmmcblk0p1. Attempting to extend filesystem in rhel 7 returns bad. Bad magic number in superblock while opening filesystem dump. Device boot start end sectors size id type devmmcblk0p1 8192 124735487 124727296 59. Ocfs2 users ocfs2 bad magic number eric ren zren at mon may 23 23. Ocfs2 users cant mount ocfs2 filesytem next message. Bad magic number in super block while trying to open devsdd the superblock could not be read or does not describe a valid ext2ext3ext4 filesystem. Why dumpe2fs returns bad magic number in superblock while trying to open devsdx device.
These are unique id numbers that the system gives to a drive. Bad magic number in superblock while opening device devsda3 january 5, 2018 pieter van puymbroeck comments 0 comment before christmas 2017 i had the honour to expand the compute node storage for a virtualised exadata. Checking the image for errors gives what looks like a. Bad magic number in super block while trying to open devsdb devsdb. Bad magic number in superblock while trying to open. How to resolve bad magic number in superblock error. But according to you this is because the swap partition does not have a file system and this is normal. From my understanding defragmenting files is not really needed in linux, but out of curiosity was googling on this subject and found these commands and was playing around with them. Ocfs2users cant mount ocfs2 filesytem wang steven swang at. In short, i have a ocfs2 cluster with 3 nodes and a shared.
Bad magic number in superblock while opening device dev. Tecgeeks news november 28, 2017 disk, fdisk, linux. Why dumpe2fs returns bad magic number in superblock while. If the device is valid and it really contains an ext2 filesystem and not swap or ufs or something else, then the superblock is corrupt, and you might try running e2fsck with an. Bad magic number in super block while opening filesystem dump. What you have to do is to edit etcfstab, and check out your linux and swap partitions mounting entries, i believe you just have to change the number of devsda number. I dont understand why you say i have another problem.
Bad magic number in super block while trying to open devhda8. What you have to do is to edit etcfstab, and check out your linux and swap partitions mounting entries, i believe you just have to change the number of devsdanumber. Hi, after installing a new linux box i got those errors when running a simple dump. Ocfs2 bad magic number oracle linux oracle software suite. Bad magic number in super block while trying to open devsdel devsdel. Ocfs2 users ocfs2 bad magic number messages sorted by. Jan 05, 2018 compute node disk expansion resulted in mount. Bad magic number in superblock while opening devmappermpath3p1 if you need more info, please let. Bad magic number in superblock while opening device vmware workstation 8. The superblock could not be read or does not describe a correct ext2 filesystem. Bad magic number in superblock while trying to open devsda5 the superblock could not be read or does not describe a valid ext2ext3ext4 filesystem. The superblock could not be read or does not describe a.
Bad magic number in superblock while trying to open devloop1 comment 7. Bad magic number in super block while trying to open devsda5 the superblock could not be read or does not describe a valid ext2ext3ext4 filesystem. The problem is that you have are trying to run the resize2fs tool on the whole logical volume, which contains a partition table, and a partition inside the volume first you must resize the partition table by running fdisk on the logical volume then you need to use kpartx to create the mapping from partition inside the volume to a device, like you already did before mounting, and then run. Bad magic number in superblock while trying to open devsdb1. Bad magic number in superblock while opening device devsdb.
Bad magic number in superblock while trying to open devvdc1 couldnt find valid filesystem superblock. How to recover corrupted superblock bad magic number in. Expanding root partition bad magic number in superblock while trying to open devmmcblk0p2. Bad magic number in superblock while trying to open devsdb devsdb. Bad magic number in superblock while opening device devemcpowera1 failed email. How to resolve bad magic number in superblock error ux. Checking the image for errors gives what looks like a similar error. Bad magic number in superblock while opening device devsdb1. Bad magic number in superblock while opening filesystem.
How to recover corrupted superblock bad magic number in superblock on oracle vm repository or poolfs doc id 2127003. Ocfs2users ocfs2 bad magic number messages sorted by. Bad magic number in superblock while opening device devsdf1 user8665771 apr 17, 2012 5. In short, i have a ocfs2 cluster with 3 nodes and a shared storage lun. Bad magic number in superblock while trying to open devhda8. Bad magic number in super block while trying to open devloop0 couldnt find valid filesystem superblock. Usually, the bad magic number happens when the super block is corrupted, and i have. It is documented completely in the exadata database machine. Bad magic number in superblock while trying to open devrhelroot couldnt find valid filesystem superblock. Perform file system check using e2fsck just fire command e2fsck b and answer with y in case system asks.
Once the above command succeeds, you can retry mounting the file system. If the device is valid and it really contains an ext2ext3ext4 filesystem and not swap or ufs or something else, then the superblock is corrupt, and you might try running e2fsck. But this case is different, i cannot fix the problem by simply replacing the super block, thus im out of ideas. Ocfs2users ocfs2 bad magic number eric ren zren at mon may 23 23. It causes mke2fs to reinitialize the superblock and group descriptors, while not touching the inode table and the block and inode bitmaps. Usually, the bad magic number happens when the super block is corrupted, and i have experienced several similar cases before, which can be solved quickly by using backup super blocks. Bad magic number in superblock while trying to open devsda2 hello, so ive a linux partition, and then i wanted to install a windows copy.
Filefrag tells you how fragmented a file is and e2frag will defragment it. The dumpe2fs returns bad magic number in super block while trying to open devsdx. If the device is valid and it really contains an ext2ext3ext4 filesystem and not swap or ufs or something else, then the. Expanding root partition bad magic number in superblock. Ocfs2 users cant mount ocfs2 filesytem wang steven swang at. Bad magic number in superblock while trying to open devsda2 what i think it happened, is that after installing windows your partitions numbers got twisted a bit. Jul 15, 2009 a while ago, ubuntu changed the way it records drives details, whereas it use to use devsdx to refer to a drive with x being az it now uses uuids instead. Bad magic number in super block while trying to open devrhelroot couldnt find valid filesystem superblock.
Bad magic number in inode every time mounting specific. Does the device have a partition table and a ocfs filesystem. Bad magic number in superblock while trying to open devloop1 fsck. How to resolve bad magic number in superblock error ux techno. Warning filesystem uses v1 dirs,limited functionality provided. I traced the mount of this device super on, entry allow, exit allow from each node and the device is mounted ok. Bad magic number in super block while trying to open devsda2 hello, so ive a linux partition, and then i wanted to install a windows copy. Attempting to extend filesystem in rhel 7 returns bad magic number in super block solution verified updated 20151028t14. Bad magic number in super block while trying to open devsda2 what i think it happened, is that after installing windows your partitions numbers got twisted a bit.
Alternatively you can also use sb option available in mount command. If the device is valid and it really contains an ext2 filesystem and not swap or ufs or something else, then the superblock is corrupt, and you might try running e2fsck with an alternate. Xfs general bad primary superblock bad magic number. Ocfs2users cant mount ocfs2 filesytem next message. Bad magic number in superblock while trying to open devsdd the superblock could not be read or does not describe a valid ext2ext3ext4 filesystem. Bad magic number in superblock while trying to open yourvolumegroup couldnt find valid filesystem superblock. Make sure your superblock is the problem, by starting a filesystem check, replacing xxx with your partition name. Attempting to extend filesystem in rhel 7 returns bad magic number in superblock solution verified updated 20151028t14. In the above shown example the number 32768 i have used is the location of the first backup copy of the superblock. I was worried about a message that said bad magic number in superblock and superblock invalid. Bad magic number in superblock while trying to open dev. There is a backup superblock every 8192 blocks if im correct.
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