[Jfs-discussion] Filesystem went read-only after a resize

[Poul P. <pe...@ro...>]

	I've got a RedHat 9 box running the 2.4.32 kernel and
jfsutils-1.0.17-6 (which is probably the ancient version that came with
the OS). Using LVM, I recently added 10GB to a logical volume and then
resized the JFS filesystem while it was online using the standard:

mount -o remount,resize /my/path

	It resized fine, but within a short period of time (seconds to
minutes) the file system switched to readonly and the only error in
dmesg was:

ERROR: (device lvm(58,6)): diFree: numfree > numinos

	I unmounted the filesystem and ran fsck.jfs:

fsck.jfs version 1.0.17, 02-Apr-2002
The current device is:  /dev/vg01/p4port_1666
Block size in bytes:  4096
File system size in blocks:  18350080
Phase 0 - Replay Journal Log
Phase 1 - Check Blocks, Files/Directories, and Directory Entries.
Phase 2 - Count Links.
Phase 3 - Rescan for Duplicate Blocks and Verify Directory Tree.
Phase 4 - Report Problems.
Phase 5 - Check Connectivity.
Phase 6 - Perform Approved Corrections.
Phase 7 - Rebuild File/Directory Allocation Maps.
Phase 8 - Rebuild Disk Allocation Maps.
File system is clean.

	After which, it mounted and appears to be fine.=20

	We use JFS on a lot of our production systems and this is the
only one to every experience this problem on a resize. Of course, most
of our other systems are all running kernel 2.6 variants and more recent
JFS tools. Was this a fluke? Any idea what might have caused it to fail?

Thanks,

-poul