In internal testing on an unsupported configuration, IBM has identified a potential data integrity issue in GPFS 126.96.36.199 and later releases of GPFS 3.4, and with GPFS 3.5. This issue has not, to IBM's knowledge, been experienced in the field. The issue occurs only when writing via NFS to a GPFS node running on the Linux operating system. This issue may manifest as either a data loss issue from a transient read error, returning zeros rather than the expected data, or as incorrect data returned following a write that is applied to the wrong file.
The fix for this issue will be included in GPFS 188.8.131.52 (APAR IV24937) and GPFS 184.108.40.206 (APAR IV24942). While IBM can not rule out the possibility that this problem may impact any customer writing via NFS in Linux GPFS environments at the stated levels, empirical evidence suggests that the likelihood of customers encountering this issue is quite limited. To avoid this issue customers should upgrade to GPFS 220.127.116.11 or GPFS 18.104.22.168 as soon as they are available. Alternatively, customers may contact IBM Service and request an ifix for their installed GPFS version.
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Updated on 2012-07-21T12:35:20Z at 2012-07-21T12:35:20Z by email@example.com
nhardt 270003NRWK1 Post
Re: internal testing on unsupported config has identified a potential DI issue2012-07-18T19:53:11ZThis is the accepted answer. This is the accepted answer.Can you elaborate more on the specific unsupported configuration where the issue was found, and perhaps provide some information that will help others determine whether or not they are are affected?
firstname.lastname@example.org 060000T9GF344 Posts
Re: internal testing on unsupported config has identified a potential DI issue2012-07-21T12:35:20ZThis is the accepted answer. This is the accepted answer.
- nhardt 270003NRWK