Red Hat Bugzilla – Bug 253613
cpio: Fails to read table of contents from tape that spans multiple medium
Last modified: 2010-10-22 13:58:00 EDT
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050922 Fedora/1.0.7-1.1.fc3 Firefox/1.0.7 Description of problem: Cannot use cpio to read backup sets that span multiple tapes. Version-Release number of selected component (if applicable): cpio-2.5-4.RHEL3 How reproducible: Always Steps to Reproduce: 1. Insert media in tape drive 2. mt -f /dev/nst0 rewind 3. mt -f /dev/nst0 setblk 0 4. mt -f /dev/nst0 defblksize 0 5. /bin/cpio -ocvC 32768 --force-local -M Tape_Change_Request < /tmp/longlist -F /dev/nst0 6. First tape hits end of media and is ejected, insert second tape 7. mt -f /dev/nst0 rewind 8. mt -f /dev/nst0 setblk 0 9. mt -f /dev/nst0 defblksize 0 10. Complete backup, eject second tape. 11. Put first media back in tape drive to read table of contents 12. /bin/cpio -tC 32768 -M Tape_Change_Request -F /dev/nst0 Failure when you reach the end of the first tape when reading table of contents: /bin/cpio: read error: Input/output error Actual Results: Reproduced on this hardware SCSI storage controller: Adaptec AHA-2940U/UW/D / AIC-7881U (rev 01) Host: scsi0 Channel: 00 Id: 05 Lun: 00 Vendor: COMPAQ Model: SuperDLT1 Rev: 4B4B Type: Sequential-Access ANSI SCSI revision: 02 Turning debugging on in st.c driver shows the following: ========Backup hits the end of first tape=================== st0: Error: 8000002, cmd: a 0 0 80 0 0 Len: 32768 Info fld=0x0, EOM Current st09:00: sense key None Additional sense indicates End-of-partition/medium detected st0: Async write error (write) 7fffffff. st0: Unloading tape. ============================================================ At this point cpio has not written a filemark at the end of the tape. ========Read hits the end of the first tape================ st0: Error: 8000002, cmd: 8 0 0 80 0 0 Len: 32768 Info fld=0x8000, Current st09:00: sense key Blank Check Additional sense indicates End-of-data detected st0: Sense: f0 0 8 0 0 80 0 16 =========================================================== At this point st hits end of data instead of filemark, cpio fails with I/O error. /bin/cpio: read error: Input/output error Expected Results: Expect cpio to read a backup set that spans multiple tapes. Additional info: This has also been reproduced with this hardware: SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI (rev 07) Host: scsi0 Channel: 00 Id: 01 Lun: 00 Vendor: HP Model: Ultrium 2-SCSI Rev: F43W Type: Sequential-Access ANSI SCSI revision: 03 ========Backup hits the end of first tape=================== kernel: st0: Error: 28000002, cmd: a 0 0 80 0 0 Len: 32768 kernel: Info fld=0x8000, Deferred st09:00: sense key Medium Error kernel: Additional sense indicates Write error kernel: st0: Async write error (write) 28000002. kernel: st0: Unloading tape. ============================================================ At this point cpio has not written a filemark at the end of the tape. ========Read hits the end of the first tape================ kernel: st0: Error: 28000002, cmd: 8 0 0 80 0 0 Len: 32768 kernel: Info fld=0x175, Current st09:00: sense key Medium Error kernel: Additional sense indicates Recorded entity not found kernel: st0: Sense: f0 0 3 0 0 1 75 e ========Read hits the end of first tape=================== /bin/cpio: read error: Input/output error
Created attachment 189681 [details] untested patch updated source package can be downloaded here: http://rbrich.fedorapeople.org/cpio-2.5-5.1.RHEL3.src.rpm