On 2013/09/19 11:39 PM, "Arman Khalatyan" <[email protected]> wrote:
>Hello, >We are removing one ost from the lustre 2.4.1. >Only few files are written on that OST without any striping. > >First we dectivate on MDS >lctl --device 15 deactivate > >then on client: >lfs_migrate -y >/lustre/arm2arm/Projects/EFRE-TESTS/RAID6TEST/arman-io-stresstest/stresste >st/run_test.sh >/lustre/arm2arm/Projects/EFRE-TESTS/RAID6TEST/arman-io-stresstest/stresste >st/run_test.sh: cannot swap layouts between >/lustre/arm2arm/Projects/EFRE-TESTS/RAID6TEST/arman-io-stresstest/stresste >st/run_test.sh and a volatile file (Operation not permitted) >error: migrate: migrate stripe file >'/lustre/arm2arm/Projects/EFRE-TESTS/RAID6TEST/arman-io-stresstest/stresst >est/run_test.sh' failed > > >What does it mean "a volatile file"? A volatile file is a new concept in Lustre 2.4 - it is a file that is created in the filesystem that has no name (e.g. it is created as an open unlinked file). This is used to implement atomic file migration in 2.4, which is safe for files that are in use. Cheers, Andreas -- Andreas Dilger Lustre Software Architect Intel High Performance Data Division _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
