A very small GFS2 fails to mount with error "can't read superblock" in a Pacemaker cluster

Solution In Progress - Updated -

Issue

  • A GFS2 filesystem created on a very small volume (e.g., 500 MB) fails to mount.

    # mount -t gfs2 -o noatime /dev/bobsrhel8/test_lv /mnt/gfs2
    mount: /mnt/gfs2: can't read superblock on /dev/mapper/bobsrhel8-test_lv.
    
  • The console and dmesg show a filesystem withdrawal after trying to mount a GFS2 filesystem.

    [  108.701890] gfs2: fsid=dm-6: Now mounting FS...
    [  108.707364] gfs2: fsid=dm-6.0: fatal: filesystem consistency error
    [  108.707364]   inode = 1 67
    [  108.707364]   function = gfs2_check_internal_file_size, file = fs/gfs2/inode.h, line = 92
    [  108.724375] gfs2: fsid=dm-6.0: about to withdraw this file system
    [  108.730477] gfs2: fsid=dm-6.0: withdrawn
    [  108.734404] CPU: 49 PID: 10065 Comm: mount Kdump: loaded Not tainted 4.18.0-147.el8.x86_64 #1
    [  108.742917] Hardware name: Dell Inc. PowerEdge R740/00WGD1, BIOS 1.4.9 06/29/2018
    [  108.750396] Call Trace:
    [  108.752857]  dump_stack+0x5c/0x80
    [  108.756184]  gfs2_lm_withdraw.cold.1+0xe9/0xf8 [gfs2]
    [  108.761243]  gfs2_consist_inode_i+0x35/0x40 [gfs2]
    [  108.766035]  gfs2_jdesc_check+0xa2/0xb0 [gfs2]
    [  108.770481]  init_inodes+0x4e4/0x750 [gfs2]
    [  108.774666]  ? init_inodes+0x292/0x750 [gfs2]
    [  108.779024]  ? snprintf+0x49/0x60
    [  108.782343]  fill_super+0x819/0xae0 [gfs2]
    [  108.786441]  ? vsnprintf+0x37c/0x520
    [  108.790033]  ? gfs2_glock_nq_num+0x65/0xc0 [gfs2]
    [  108.794736]  ? snprintf+0x49/0x60
    [  108.798057]  ? __raw_spin_unlock+0x10/0x10 [gfs2]
    [  108.802779]  gfs2_mount+0x255/0x280 [gfs2]
    [  108.806886]  mount_fs+0x3b/0x167
    

Environment

  • Red Hat Enterprise Linux 8 (with the Resilient Storage Add-on)

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content