freeing free inode/frag/block Panic on /.alt.tmp.xxx After Issuing the lufslist Command
(Doc ID 1329401.1)
Last updated on JUNE 22, 2020
Applies to:Solaris Operating System - Version 8.0 to 10 1/13 U11 [Release 8.0 to 10.0]
Information in this document applies to any platform.
***** 02-Dec-2018 Checked for currency from kernel point of view *****
You may see a panic with the panic string similar to this.
Jun 7 13:11:52 host ^Mpanic[cpu13]/thread=30007f66720:
Jun 7 13:11:52 host unix: [ID 198239 kern.notice] free: freeing free block, dev:0x2000000008, block:39392, ino:2, fs:/.alt.tmp.b-wB.mnt
This means UFS freeing free block panic happened on "/.alt.tmp.b-wB.mnt".
The scope of this document is to explain and prevent future similar freeing free panics, when the affected file system name starts with "/.alt.tmp". "/.alt.tmp" means the filesystem is a boot environment of Live Upgrade.
It does not explain any other ufs related panic, when the file system name does not match the above pattern.
Sometimes before the panic, a live upgrade was performed by :
- One side of the boot disk mirror was detached.
- The detached disk was used to host the new boot environment for the live upgrade.
- The new boot environment was upgraded and activated.
- The new boot environment was re-mirrored with the other side of the original mirror without deleting the old boot environment using ludelete.
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