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These updated gfs-kmod packages also fix the following bugs:
* when SELinux was in permissive mode, a race condition during file creation could have caused one
or more cluster nodes to be fenced and lock the remaining nodes out of the GFS file system. This race
condition no longer occurs with this update.
* when ACLs (Access Control Lists) are enabled on a GFS file system, if a transaction that has started
to do a write request does not have enough spare blocks for the operation it causes a kernel panic.
This update ensures that there are enough blocks for the write request before starting the operation.
420
(BZ#513885
)
* requesting a "flock" on a file in GFS in either read-only or read-write mode would sometimes cause a
"Resource temporarily unavailable" state error (error 11 for EWOULDBLOCK) to occur. In these cases,
a flock could not be obtained on the file in question. This has been fixed with this update so that flocks
can successfully be obtained on GFS files without this error occurring.
* the GFS withdraw function is a data integrity feature of GFS file systems in a cluster. If the GFS
kernel module detects an inconsistency in a GFS file system following an I/O operation, the file system
becomes unavailable to the cluster. The GFS withdraw function is less severe than a kernel panic,
which would cause another node to fence the node. With this update, you can override the GFS
withdraw function by mounting the file system with the "-o errors=panic" option specified. When this
option is specified, any errors that would normally cause the system to withdraw cause the system to
panic instead. This stops the node's cluster communications, which causes the node to be fenced.
422
(BZ#517145
)
Finally, these updated gfs-kmod packages provide the following enhancement:
* the GFS kernel modules have been updated to use the new generic freeze and unfreeze ioctl
interface that is also supported by the following file systems: ext3, ext4, GFS2, JFS and ReiserFS.
With this update, GFS supports freeze/unfreeze through the VFS-level FIFREEZE/FITHAW ioctl
423
interface.
(BZ#487610
Users are advised to upgrade to these latest gfs-kmod packages, updated for use with the
2.6.18-194.el5 kernel, which contain backported patches to correct these issues, fix these bugs, and
add this enhancement.
1.62. gfs-utils
1.62.1. RHBA-2010:0290: bug fix update
Updated gfs-utils packages that fix various bugs are now available.
The gfs-utils packages provide the user-space tools necessary to mount, create, maintain and test
GFS file systems.
The updated gfs-utils packages apply the following bug fixes:
419
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=471258
420
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=513885
421
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=515717
422
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=517145
423
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=487610
(BZ#471258
)
419
)
(BZ#515717
gfs-utils
421
)
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