Red Hat ENTERPRISE LINUX 5.5 - TECHNICAL NOTES Manual page 131

RHSA-2010:0178: Important Red Hat Enterprise Linux 5.5 kernel security and bug fix update
• Add bfa Brocade BFA Fibre-Channel/FCoE driver.
• Add pmcraid driver.
BZ#549763
• Update lpfc driver.
• Upddate megaraid driver.
1.88.7.1.7. Block Device Updates
• cfq-iosched: Fix sequential read performance regression.
• cfq: Kick busy queues without waiting for merged req.
• raid45: Fix for kernel OOPS resulting from constructor error path.
• Fix deadlock at suspending mirror device.
• Fix I/O errors while accessing loop devices or file-based Xen images from GFS volume.
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BZ#549397
• Correct issue with MD/DM mapping in blktrace.
• Fix install panic with xen iSCSI boot device.
• Allow more flexibility for read_ahead_kb store.
• Add device ID for 82801JI sata controller.
• Fix a race in dm-raid1.
• raid: deal with soft lockups during resync.
• blktrace stops working after a trace-file-directory replacement.
• I/O scheduler setting via elevator kernel option is not picked up by Xen guest.
• Fix rcu accesses in partition statistics code.
• Fix iosched batching fairness and reset batch for ordered requests.
1.88.7.1.8. Multiple Device Updates
• Fix kernel panic releasing bio structure after recovery failed.
• Lock snapshot while reporting status.
A problem was found where, in the snapshot_status() function, the counts were being read
without holding the lock. This could result in invalid intermediate values being reported.
This update is a backport of a previous patch that locks the snapshot while reporting status.
• Fix deadlock in device mapper multipath when removing a device.
• Snapshots of the same origin with differing chunk sizes causes corruption.
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BZ#529979
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1067
BZ#518243
BZ#555120
BZ#506200
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BZ#502927
BZ#501075
BZ#543307
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BZ#475695
BZ#571818
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BZ#570814
BZ#565494
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BZ#515551
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BZ#512991
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BZ#510257
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BZ#498489
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BZ#493517
BZ#555171
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BZ#498461
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BZ#462472
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BZ#543270
1086
BZ#210490
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