3.1.2 Matrix Server RHEL4 Release Notes

PolyServe Matrix Server Release Notes 12

• 02_rescan-partitions.patch. This patch restores the original return value

of check_partition() to 0 instead of -EIO. Returning -EIO breaks some

of the partition code, which can prevent psd devices from being

imported into the matrix. If this patch is not installed, you will need to

ensure that all LUNs have a valid partition table in place.

• 03_imapping_race.patch. This patch adds a reference to a filesystem

inode when it is acquired to prevent a race condition that can occur

when the i_mapping pointer is performing sync operations. Without

this patch, the kernel will panic if the race occurs.

The following patches are provided for the 2.6.9-34.EL kernel:

• 00_lock_rename.patch. This patch corrects a locking problem in the code

that implements the rename(2) system call in the Linux kernel.

Without this patch, the system may hang during rename operations.

• 01_imapping_race.patch. This patch adds a reference to a filesystem

inode when it is acquired to prevent a race condition that can occur

when the i_mapping pointer is performing sync operations. Without

this patch, the kernel will panic if the race occurs.

The patches are included in the PolyServe Support RPM.

Deinstall Patches

The Support RPM automatically installs all of the patches. If you do not

want to run with a particular patch, you can deinstall it after you have

installed the PolyServe Support RPM.

To deinstall a specific patch, run these commands:

# cd /usr/src/linux-<kernel>

# patch -R -p1 < /usr/src/polyserve/<kernel>/patches/patch_filename