Michael, It's been pretty well settled for some time now that you cannot have one guest running with a disk R/W, and try to share it with others R/O. It's just asking for trouble, such as you're seeing. Any and all systems that have it LINKed and mounted, must have it R/O.
Also, mounting an ext3 file system R/O doesn't make any sense. Mount it as ext2, then it won't even try to find the journal to replay it. In addition to having the CP LINKs to the disk be R/O, make sure that your kernel parms have dasd=www,xxx(ro),yyy-zzz specified for the disk(s) that are R/O. Mark Post -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Michael Coffin Sent: Thursday, May 26, 2005 9:18 AM To: [email protected] Subject: Debian R/O DASD Errors Hi Folk, I have two Debian 2.4.17 Linux390 systems, configured with ext3 filesystems as follows: DEBIBASE (an image with full r/w DASD, used to maintain /usr and /usr/opt): MDISK 150 3390 1839 750 LINUX1 MR / MDISK 151 3390 3139 200 LINUXA MR <swap> MDISK 152 3390 1 3338 LINUXE MR /usr MDISK 156 3390 1 3338 LINUXG MR /usr/opt DEBPROD1 (an image with R/O links to /usr and /usr/opt): LINK DEBIBASE 0152 0152 RR * SHARED R/O /USR LINK DEBIBASE 0156 0156 RR * SHARED R/O /USR/OPT MDISK 150 3390 2089 750 LINUX5 MR / MDISK 151 3390 139 200 LINUX6 MR <swap> When I bring up DEBIBASE (full R/W DASD) it comes up clean, no problems. When I bring up DEBPROD1 (R/O /usr) and DEBIBASE is running - I get the following errors on the 152 R/O link (dasdc) which loop forever, DEBPROD1 never starts: Checking root file system... fsck 1.27 (8-Mar-2002) /dev/dasd/0150/part1: clean, 8203/67520 files, 112808/134976 blocks EXT3 FS 2.4-0.9.16, 02 Dec 2001 on dasd(94,1), internal journal Calculating module dependencies... done. Loading modules: Checking all file systems... fsck 1.27 (8-Mar-2002) /dev/dasd/0152/part1: recovering journal dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: EXAMINE 24: Command Reject detected - fatal error dasd(eckd): Sense data: dasd(eckd):device 0152 on irq 15: I/O status report: dasd(eckd):in req: 07fde100 CS: 0x00 DS: 0x02 dasd(eckd):Failing CCW: 07fde1a0 dasd(eckd):Sense(hex) 0- 7: 80 02 00 00 36 06 06 00 dasd(eckd):Sense(hex) 8-15: 00 00 00 ab 51 00 00 05 dasd(eckd):Sense(hex) 16-23: 21 00 58 14 44 00 00 00 dasd(eckd):Sense(hex) 24-31: 00 00 4c e2 00 00 06 06 dasd(eckd):24 Byte: 0 MSG 0, no MSGb to SYSOP dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: (EXAMINE) ERP chain report for req: 07fde100 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde100: c5c3d2c4 07e91f00 07e91f00 074eac00 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde110: 07fdd000 07fab400 07fde190 03000002 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde120: 00000000 ff000000 07fde170 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde130: 00000000 00000000 0000011e 1a300000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde140: bd11128a bab6ca80 bd11128a bae54f00 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde150: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde160: 00000004 00000020 00546b7c 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: Channel program (complete): dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde190: 63400010 07fde170 47400010 07fde180 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde1a0: 85001000 07a45000 00000000 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde1b0: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07fde1c0: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: Failed CCW (07fde1a0) already logged end_request: I/O error, dev 5e:09 (dasd), sector 4224 And finally, if I bring up DEBPROD1 (R/O /usr) while DEBIBASE is NOT logged on/running - I get the following errors on 152 and 156 - BUT it doesn't loop forever and DEBPROD1 DOES eventually come up: Checking root file system... fsck 1.27 (8-Mar-2002) /dev/dasd/0150/part1: clean, 8203/67520 files, 112808/134976 blocks EXT3 FS 2.4-0.9.16, 02 Dec 2001 on dasd(94,1), internal journal Calculating module dependencies... done. Loading modules: Checking all file systems... fsck 1.27 (8-Mar-2002) /dev/dasd/0152/part1: clean, 100241/300960 files, 559162/600816 blocks dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: EXAMINE 24: Command Reject detected - fatal error dasd(eckd): Sense data: dasd(eckd):device 0152 on irq 15: I/O status report: dasd(eckd):in req: 07e91f00 CS: 0x00 DS: 0x02 dasd(eckd):Failing CCW: 07e91fa0 dasd(eckd):Sense(hex) 0- 7: 80 02 00 00 36 03 0e 00 dasd(eckd):Sense(hex) 8-15: 00 00 00 9b 51 00 00 05 dasd(eckd):Sense(hex) 16-23: 21 00 58 14 44 00 00 00 dasd(eckd):Sense(hex) 24-31: 00 00 4c e1 00 00 03 0e dasd(eckd):24 Byte: 0 MSG 0, no MSGb to SYSOP dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: (EXAMINE) ERP chain report for req: 07e91f00 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91f00: c5c3d2c4 00000000 07e91f00 07e91f00 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91f10: 07fdd000 07fab400 07e91f90 03000002 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91f20: 00000000 ff000000 07e91f70 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91f30: 00000000 00000000 0000011e 1a300000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91f40: bd11138e e7b10540 bd11138e e7b11480 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91f50: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91f60: 00000004 00000020 00546b7c 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: Channel program (complete): dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91f90: 63400010 07e91f70 47400010 07e91f80 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91fa0: 85001000 07a45000 00000000 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91fb0: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: 07e91fc0: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdc ( 94: 8),[EMAIL PROTECTED]: Failed CCW (07e91fa0) already logged end_request: I/O error, dev 5e:09 (dasd), sector 4224 /dev/dasd/0156/part1: clean, 30314/300960 files, 220225/600816 blocks dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: EXAMINE 24: Command Reject detected - fatal error dasd(eckd): Sense data: dasd(eckd):device 0156 on irq 16: I/O status report: dasd(eckd):in req: 07fde100 CS: 0x00 DS: 0x02 dasd(eckd):Failing CCW: 07fde1a0 dasd(eckd):Sense(hex) 0- 7: 80 02 00 00 40 03 0e 00 dasd(eckd):Sense(hex) 8-15: 00 00 00 9b 51 00 00 05 dasd(eckd):Sense(hex) 16-23: 21 00 58 14 44 00 00 00 dasd(eckd):Sense(hex) 24-31: 00 00 4c e1 00 00 03 0e dasd(eckd):24 Byte: 0 MSG 0, no MSGb to SYSOP dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: (EXAMINE) ERP chain report for req: 07fde100 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde100: c5c3d2c4 00000000 07fde100 07fde100 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde110: 07fd5000 07fa1b00 07fde190 03000002 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde120: 00000000 ff000000 07fde170 00000000 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde130: 00000000 00000000 0000011e 1a300000 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde140: bd11138e eedbcd80 bd11138e eedbdc40 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde150: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde160: 00000004 00000020 00546b7c 00000000 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: Channel program (complete): dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde190: 63400010 07fde170 47400010 07fde180 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde1a0: 85001000 079cb000 00000000 00000000 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde1b0: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: 07fde1c0: 00000000 00000000 00000000 00000000 dasd_erp(3990): /dev/dasdg ( 94: 24),[EMAIL PROTECTED]: Failed CCW (07fde1a0) already logged end_request: I/O error, dev 5e:19 (dasd), sector 4224 Setting kernel variables. Loading the saved-state of the serial devices... Mounting local filesystems... /dev/dasd/0152/part1 on /usr type ext3 (ro) /dev/dasd/0156/part1 on /usr/opt type ext3 (ro) So what gives? What's Debian doing to the R/O DASD that's causing these errors, and why is it that when the owner (DEBIBASE) is up with the disk R/W, DEBPROD1 linked R/O loops forever on the I/O error, but not when DEBIBASE is down? Hopefully the above records won't "wrap" in your email client (hint: turn "wrap" off). I had attached the consoles (containing a bit more data as well) as plain text attachments, but the Marist listserve rejected the post - contact me off-list if interested and I'll send them to you directly. Michael Coffin, President MC Consulting Company, Inc. PMB 123 289 Park Street Stoughton, Massachusetts 02072 Voice: (781) 344-9837 FAX: (781) 344-7683 [EMAIL PROTECTED] www.mccci.com We employ aggressive SPAM filters. 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