Lvm Bad Superblock, Linux - Newbie This Linux forum is for members that are new to Linux. 45. When rebooting I was left with unbootable ext4 partition and unmountable (mount: wrong fs type, bad option, bad superblock on /dev/nvme0n1p6) one. I followed the instructions in the link CentOS7上lvm分区调整（resize2fs: Bad magic number in super-block while trying to open ） posted @ 2019-08-13 23:15 abm 阅读 (14375) 评论 (0) 收藏 举报 分类: LVM, Linux 服务, Linux基础 I have a logical volume which serves as the filesystem for a virtual guest OS. 4 (23-Sep-2019) ext2fs_open2: Bad magic number in super-block fsck. It’s a production machine, uptime 600 days, and i never used it before. I had a container running linux with a docker setup and it was running out of space (vm-101-disk-0) Based on . I can't make myself believe that you were unlucky enough to have all copies of the superblock wiped. [root@ursula diskissues]# vgcfgrestore -f Unable to mount, no superblock. 9服务器LVM方式 挂载磁盘 时的问题 環境 CentOS Linux release 7. So there must be something wrong with the partition table, which in turn is throwing off the logical block offsets in the filesystem causing fsck to not be able to find the alternate superblocks. and lvm fullreport doesn't give any outputs. 5 (30-Dec-2021) e2fsck: Bad magic number in super-block while trying to open /dev/vg00/dshark The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem. Manual inspection using Hex may also be necessary. #mount -t ext4 /dev/sda /data mount: wrong fs type, bad option, bad superblock on /dev/sda, missing codepage or helper program, or other e 1、查看服务器上面的lv信息：lvscan 2、尝试挂载： mount /dev/VolGroup/lv_home /home 报这个错误： mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup-lv_home, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so If the primary superblock is damaged, you can’t mount the filesystem, and the operating system will probably tell you that it “can’t read superblock” if you try to mount the filesystem. Cannot mount lvm, bad superblock Ask Question Asked 4 years ago Modified 4 years ago Oct 11, 2014 · I am trying to resize a logical volume on CentOS7 but am running into the following error: resize2fs 1. ext2: Bad magic number in super-block while trying to open /dev/md126 The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem. Due to moving my home partition to a new disk I gained some space back from the logical volume home. e2fsck: Bad magic number in super-block while trying to open /dev/md2 The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem. If the device is valid and it really contains an ext2/ext3/ext4 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 <device> or e2fsck -b 32768 Hello, I had to shutdown my server today to replace a part and after I restarted, I found that my Unassigned device would no longer mount. 9 (28-Dec-2013) e2fsck: Bad magic number in super-block while trying to open /dev/mapper/rhel-home The superblock could not be read or does not describe a correct ext2 filesystem. 前几天接到朋友联系，说他的服务器坏了，启动不起来了。这是一个RHEL 4的服务器，而且是那种盗版RHEL 4，也就是说没有售后服务的，联系我问问能不能帮帮忙。我也很久没有弄过Linux系统上的东西了。只好尝试一下，庆幸的是，修好了，并帮朋友维护了一段时间，在此记录一些修复和维护中碰到的 e2fsck 1. Change the device as necessary: sudo xfsdump -f /dev/sdb1 | grep -i superblock I want to note my personal experience, that Ubuntu hasn’t had good XFS support for a while, and you might find it very helpful to download an old copy of warty warthog, and use a livecd with that. The following instructions show how to recover superblock for ext4 and Btrfs file system. mount: /mnt/1: wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or helper program, or other error. First, make sure all the LVs in the volume group have been activated: vgchange -ay vgname. EDIT1 CentOS 7でLVMディスク拡張するときに、ハマったことがあるので共有。 LVの拡張まで行って、最後にファイルシステムを拡張しようとするときに、CentOS 6の時代と同じくresize2fs とやると以下のエラー [root@localhost ~]# resize2 The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem. 47. and here's a Smart data Screenshot from Disk Utility. We need to recover the bad superblock from backup copies. Mounting a Logical Volume fails with the following output: mount: wrong fs type, bad option, bad superblock on /dev/oravg/ora03, missing codepage or other error In Change the device as necessary: sudo xfsdump -f /dev/sdb1 | grep -i superblock I want to note my personal experience, that Ubuntu hasn’t had good XFS support for a while, and you might find it very helpful to download an old copy of warty warthog, and use a livecd with that. ext2fs_open2: Bad magic number in super-block e2fsck: Superblock invalid, trying backup blocks openfs: invalid superblock checksum. I stopped the array, started it backup in maintenance mode and attempted to do a xfs_repair /dev/sdb1 and got xfs_repair /dev/sdb1 Phase 1 - find and verify s mount: wrong fs type, bad option, bad superblock on /dev/mapper/VGFix-ArchRoot, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so mount: wrong fs type, bad option, bad superblock on /dev/xvdf1, missing codepage or helper program, or other error Ask Question Asked 7 years, 1 month ago Modified 2 years ago If you are seeing an error like wrong fs type, bad option, bad superblock, clicking the "Mount" arrow will not fix it. com/a/747574/459266. ext4: Superblock invalid, trying backup blocks fsck. my system is CentOS 6. If the device is valid and it really contains an ext2 When rebooting I was left with unbootable ext4 partition and unmountable (mount: wrong fs type, bad option, bad superblock on /dev/nvme0n1p6) one. I created a snapshot using lvcreate and Mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup-lv_home, Missing codepage or helper program, or other error In some cases useful info is found in syslog - try Dmesg | tail or so you see i tried fsck -t ext4 /dev/mapper/VolGroup-lv_home but still not work. After this i was moving some files from the lvm to one of the removed pvs. If the device is valid and it really contains an ext2 Well, i can resize if i lvextend the lvm volume and then at the virtual server i fdisk, e2fsck and resize2fs, which is a different approach. Did not work: From what I read in other posts I need to locate a backup superblock, replace the bad one and then maybe repair the logical volume (?). Did not work: Hi all, New proxmox user here (few months of use, love it) I think I broke something due to my little knowledge of how storage works. bash_history this are the commands I used e2fsck 1. I first though maybe LVM would not activate the logical volumes, but the UUIDs for the music and video volumes are there. The only problem then is if it's the boot disk that needs expansion not a big problem, though ;) If you could tell me how that'd be great, cause i really can't pull it from the xen-server only /dev/sdb2 1026048 156301311 77637632 8e Linux LVM Question: With /dev/sda running a healthy, non-LVM setup of Fedora 16, how do I manually mount /dev/sdb (with corrupt MBR) somewhere inside System B so as to be able to recover all the data from it? So, a filesystem located on a LVM logical volume does not have its superblock readable. If the device is valid and it really contains an ext2/ext3/ext4 filesystem (and not swap or ufs or something else), then the superblock e2fsck 1. I was moving a couple of physical volumes from my lvm. Well, i can resize if i lvextend the lvm volume and then at the virtual server i fdisk, e2fsck and resize2fs, which is a different approach. root@r710:~# thin_check /dev/sdb examining superblock superblock is corrupt bad checksum in superblock, wanted 2594599123 Device Boot Start End Blocks Id System /dev/sdb1 1 1953525167 976762583+ 8e Linux LVM LVM doesn't appear to be an option for mount or fstab. 0 (5-Feb-2023) ext2fs_open2: Bad magic number in super-block fsck. but if I try to mount either of the arrays, I still get: root@regDesktopHome:~# mount /dev/md1 /mnt/data mount: wrong fs type, bad option, bad superblock on /dev/md1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so Solved: I am trying to resize one of my paritions because it keeps complaining that /opt is low on space. ext4: Bad magic number in super-block while trying to open /dev/sdb The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem. 使用 mount挂载磁盘mount: wrong fs type, bad option, bad superblock on 以及Centos7. [root@ursula diskissues]# vgcfgrestore -f Bad ext4 superblock on LVM after lvextend and power failure #1 by Namudril » Sun Sep 10, 2023 5:06 pm How do you repair the superblock of an LVM volume? Alternatively, how do you recover the data on an unmountable lvm logical volume? I recently added a second hard disk, extended my volume group and For me it also worked with testdisk to solve wrong fs type, bad option, bad superblock on /dev/nvme0n1 as in my answer here: unix. I have 7 Hard Drives in a raid 5 (I know, move to raid 6, but not the issue here) array. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock Tried to mount a disk (hardware raid) but failed. stackexchange. xfs_repair didn’t found any relevant piece of a superblock. Just starting out and have a question? If it is not in the man pages or the how-to's this is the place! e2fsck 1. The only problem then is if it's the boot disk that needs expansion not a big problem, though ;) If you could tell me how that'd be great, cause i really can't pull it from the xen-server only I restored a LVM group from a recovered config today (background #1, #2). resize2fs /dev/vg0/simax resize2fs 1. ext2: Superblock invalid, trying backup blocks fsck. I'm trying to mount my logical volume and get the following error: root@mediaserver:/home/jon# mount /dev/mediaserver/homeserver /media mount: you must specify the Ubuntu This forum is for the discussion of Ubuntu Linux. If the device is valid and it really contains an ext2/ext3/ext4 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 <device> or e2fsck -b 32768 <device> Found a gpt partition table in /dev/sdb e2fsck 1. When checking that partition or disk (fsck /dev/nvme0n1p6 or fsck /dev/nvme0n1) it reported the " Bad magic number in super-block " message - the same as in original post's question. 8. Published December 6, 2020 · Updated February 21, 2025 … or how to resize a file system on CentOS 7. 5 (29-Jul-2012) resize2fs: Bad magic number in super-block while trying to open /dev/vg0/simax Couldn't find valid filesystem superblock. mdadm: /dev/md1 has been started with 2 drives. 2003 (Core) 事象 : AWSのEBSサイズを変更したからファイルシステムを拡張しようとしてresize2fsコマンドを使ったら怒られた $ sudo resize2fs /dev/xvda1 r. I'm trying to mount an LVM2 volume in Linux, but all the instructions I see online say to mount the Volume Group, such as: mkdir -p /mnt/VolGroup00/LogVol00 but I don't know how to figure out the This has happened to me a few times, and it’s not a nice problem to find yourself in. 42. Feb 2, 2022 · Mount LVM to recover data: wrong fs type, bad option, bad superblock on Ask Question Asked 4 years ago Modified 3 years ago Mount failed with below error: # mount mount: wrong fs type, bad option, bad superblock on /dev/mapper/testvg-testlv The e2fsck command fails with below error: e2fsck How do you repair the superblock of an LVM volume? Alternatively, how do you recover the data on an unmountable lvm logical volume? I recently added a second hard disk, extended my volume group and Mar 3, 2011 · mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup01-LogVol00, missing codepage or helper program, or other error In some cases Dec 19, 2025 · To repair a bad superblock, for example on an LVM volume, you can employ commands like sudo dumpe2fs /dev/sdX1 | grep -i superblock and sudo fsck -b /dev/sdX1. I managed to successfully pvmove and pvremove them. 9 (28-Dec-2013) resize2fs: Bad magic number in super-block while trying to open /dev/mapper/ Disk looks fine, but mount fails (bad option, bad superblock) Ask Question Asked 5 years, 3 months ago Modified 5 years, 3 months ago mount: wrong fs type, bad option, bad superblock on /dev/mapper/VolGroup01-LogVol00, missing codepage or helper program, or other error In some cases Hi, I have a server that kernal panic-ed on reboot and has a bad super block. I need to run fsck on the RootVG, but can't see or mount the filesystems, In this article, we'll see how to use the 'fsck' or 'e2fsck' command in Linux to repair a corrupted file system. On top of that, I run LVM, with a partition for btrfs. If the device is valid and it really contains an ext2/ext3/ext4 filesystem (and not swap or ufs or something else), then the superblock Using LVM? yes: Try with lvscan to confirm I Â run xfs_repair /dev/sdx1 and it complains of bad superblock and it also fails to find a good secondary superblock. 1 (24-Mar-2018) Warning! /dev/md2 is in use. So looks like some has change in dependencies and/or mounting process. 44. e2fsck: Bad magic number in super-block while trying to open /dev/md1 The superblock could not be read or does not describe a valid ext2/ext3/ext4 First some background on my setup. I'm happy with the state of my guest OS and would like to make a backup of it. Now during this I restored a LVM group from a recovered config today (background #1, #2). 46. You computer won’t boot, all your filesystem checks tell you you’ve a bad superblock, but you… e2fsck 1. Any ideas on how to proceed? resize2fs: Bad magic number in super-block while trying to open …. BTRFS is at versi filesystem. If the filesystem is dirty or corrupted, the Disks app will simply pop up a window with the exact same error message you’ve already seen. Full images were made of the disks prior to issuing the following command. To repair a bad superblock, for example on an LVM volume, you can employ commands like sudo dumpe2fs /dev/sdX1 | grep -i superblock and sudo fsck -b /dev/sdX1. dpz4, rwpqt, wvmk, asmvz1, xcop60, n5lhji, bpgy, aona, cjg2, kkup,