Hi all, a few weeks back we had a discussion on empty volumes not returning to scratch, well, here is an example.
tsm: BASKET>q vol stat=empty f=d Volume Name: U00122 Storage Pool Name: SANPOOL Device Class Name: 3494-3590 Estimated Capacity (MB): 0.0 Pct Util: 0.0 Volume Status: Empty Access: Read/Write Pct. Reclaimable Space: 0.0 Scratch Volume?: Yes In Error State?: No Number of Writable Sides: 1 Number of Times Mounted: 5 Write Pass Number: 0 Approx. Date Last Written: Approx. Date Last Read: Date Became Pending: Number of Write Errors: 0 Number of Read Errors: 0 Volume Location: Last Update by (administrator): Last Update Date/Time: 07/27/03 11:11:32 This is with server level 5.1.6.4 on AIX 4.3.3. What is more surprising is that the last update of this volume was not reclamation, but allocation of this volume in the storagepool. It has been mounted for over two hours at that time, probably due to space-recamation running at that time, but apperently, there was never one bit written. Now I'm wondering, how could that be? The actlog shows: 07/27/03 11:11:32 ANR8337I 3590 volume U00122 mounted in drive 3590-6 (/dev/rmt6). 07/27/03 11:11:32 ANR1340I Scratch volume U00122 is now defined in storage pool SANPOOL. 07/27/03 11:11:58 ANE4991I (Session: 12641, Node: BASKET-C) API ANE4991 rmt0=leeg rmt1=leeg rmt2=leeg rmt3=leeg rmt4=leeg rmt5=leeg rmt6=U00122 (lots more ANE4991I here, this is generated by a applcation developped in house....) 07/27/03 13:17:37 ANR8325I Dismounting volume U00122 - 2 minute mount retention expired. 07/27/03 13:17:38 ANE4991I (Session: 12911, Node: BASKET-C) API ANE4991 rmt0=leeg rmt1=000809 rmt2=000689 rmt3=leeg rmt4=leeg rmt5=U00261 rmt6=U00122 07/27/03 13:17:49 ANR8336I Verifying label of 3590 volume U00122 in drive 3590-6 (/dev/rmt6). 07/27/03 13:18:44 ANE4991I (Session: 12913, Node: BASKET-C) API ANE4991 rmt0=leeg rmt1=000809 rmt2=000689 rmt3=leeg rmt4=leeg rmt5=U00261 rmt6=U00122 07/27/03 13:18:47 ANR8468I 3590 volume U00122 dismounted from drive 3590-6 (/dev/rmt6) in library 3494LIB. And the volume doesn't show in the actlog ever since... As you can see, the is a volume that was a scratch vol, was written to (apperently, it could not have been read, since scratchvolumes don't contain any data) for over 2 hours and is empty afterwards. -- Met vriendelijke groeten, Remco Post SARA - Stichting Academisch Rekencentrum Amsterdam http://www.sara.nl High Performance Computing Tel. +31 20 592 8008 Fax. +31 20 668 3167 "I really didn't foresee the Internet. But then, neither did the computer industry. Not that that tells us very much of course - the computer industry didn't even foresee that the century was going to end." -- Douglas Adams