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Description
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Solaris 9 + 118558-18 or later.
When fssnap creates snapshots of a file system whose certain pages are locked in memory,
fssnap generates a misleading error message:
fssnap: ioctl: error 22: Invalid argument
With 118558-17 or earlier, the error message was more accurate:
snapshot error: File system could not be write locked
To reproduce:
Write a small testing program to lock pages, and then run fssnap over the same file system.
Truss out with 118558-17:
344: -> main(0x4, 0xffbffe6c, 0xffbffe80, 0x23800)
344: brk(0x00024028) = 0
344: brk(0x00026028) = 0
344: open64("/fruit", O_RDONLY) = 3
344: -> create_snap(0x3, 0x24038, 0x0, 0x0)
344: -> open_backpath(0x3, 0xffbffdb0, 0xffbffd64, 0xfffffff8)
344: stat64("/var/tmp", 0xFFBFF840) = 0
344: d=0x00800000 i=5831 m=0041777 l=6 u=0 g=3 sz=512
344: at = Oct 31 11:25:37 SGT 2006 [ 1162265137 ]
344: mt = Oct 31 11:28:43 SGT 2006 [ 1162265323 ]
344: ct = Oct 31 11:28:43 SGT 2006 [ 1162265323 ]
344: bsz=8192 blks=2 fs=ufs
344: open64("/var/tmp/snapshot0", O_RDWR|O_CREAT|O_EXCL, 0600) = 4
344: fstatvfs64(3, 0xFFBFF388) = 0
344: bsize=8192 frsize=1024 blocks=123023 bfree=111387
344: bavail=99085 files=70656 ffree=70645 favail=70645
344: fsid=0x800008 basetype=ufs namemax=255
344: flag=ST_NOTRUNC
344: fstr=""
344: llseek(4, 0x07823BFF, SEEK_SET) = 0x07823BFF
344: write(4, " 0", 1) = 1
344: <- open_backpath() = 4
344: open64("/dev/fssnapctl", O_RDONLY|O_EXCL) = 5
344: ioctl(5, 0x20006658, 0xFFBFF940) Err#22 EINVAL
344: unlink("/var/tmp/snapshot0") = 0
344: -> die_create_error(0x4, 0x20006658, 0xffbff940, 0x74300000)
344: fstat64(2, 0xFFBFE988) = 0
344: d=0x00800000 i=25332 m=0020620 l=1 u=0 g=7 rdev=0x00600001
344: at = Oct 31 11:28:23 SGT 2006 [ 1162265303 ]
344: mt = Oct 31 11:28:23 SGT 2006 [ 1162265303 ]
344: ct = Oct 31 11:28:21 SGT 2006 [ 1162265301 ]
344: bsz=8192 blks=0 fs=ufs
344: write(2, " s n a p s h o t e r r".., 16) = 16
344: write(2, " F i l e s y s t e m ".., 38) = 38
344: <- main() = 2
344: -> _fini(0x0, 0x9f4c4, 0x10ed8, 0xff28bab4)
344: <- _fini() = 0
344: _exit(2)
Truss output with the 118558-34:
351: -> main(0x4, 0xffbffe6c, 0xffbffe80, 0x24000)
351: brk(0x00024680) = 0
351: brk(0x00026680) = 0
351: open64("/fruit", O_RDONLY) = 3
351: -> create_snap(0x3, 0x24690, 0x0, 0x0)
351: -> open_backpath(0x3, 0x80, 0x0, 0xffbffdb0)
351: fstatvfs64(3, 0xFFBFFC40) = 0
351: bsize=8192 frsize=1024 blocks=123023 bfree=111387
351: bavail=99085 files=70656 ffree=70645 favail=70645
351: fsid=0x800008 basetype=ufs namemax=255
351: flag=ST_NOTRUNC
351: fstr=""
351: stat64("/var/tmp", 0xFFBFFBA8) = 0
351: d=0x00800000 i=5831 m=0041777 l=6 u=0 g=3 sz=1024
351: at = Oct 31 12:51:31 SGT 2006 [ 1162270291 ]
351: mt = Oct 31 12:53:48 SGT 2006 [ 1162270428 ]
351: ct = Oct 31 12:53:48 SGT 2006 [ 1162270428 ]
351: bsz=8192 blks=2 fs=ufs
351: -> open_multi_backfile(0xffbff7a8, 0x1, 0xffbffd60, 0x0)
351: -> gen_backing_store_path(0xffbff7a8, 0x1, 0xffbff744, 0x0)
351: <- gen_backing_store_path() = 0x250a0
351: stat64("/var/tmp/snapshot0", 0xFFBFF6A8) Err#2 ENOENT
351: open64("/var/tmp/snapshot0", O_RDWR|O_CREAT|O_EXCL, 0600) = 4
351: <- open_multi_backfile() = 0
351: llseek(4, 0x07823BFF, SEEK_SET) = 0x07823BFF
351: write(4, " 0", 1) = 1
351: <- open_backpath() = 1
351: open64("/dev/fssnapctl", O_RDONLY|O_EXCL) = 5
351: ioctl(5, 0x20006660, 0x000258A0) Err#22 EINVAL
351: -> unlink_all(0x250a0, 0x1, 0x258a0, 0x74300000)
351: -> gen_backing_store_path(0x250a0, 0x1, 0xffbffcf4, 0x0)
351: <- gen_backing_store_path() = 0x250c0
351: unlink("/var/tmp/snapshot0") = 0
351: <- unlink_all() = 0x250a0
351: -> die_perror(0x24270, 0x1, 0x258a0, 0x74300000)
351: fstat64(2, 0xFFBFEDA8) = 0
351: d=0x00800000 i=25332 m=0020620 l=1 u=0 g=7 rdev=0x00600001
351: at = Oct 31 12:53:30 SGT 2006 [ 1162270410 ]
351: mt = Oct 31 12:53:30 SGT 2006 [ 1162270410 ]
351: ct = Oct 31 12:53:26 SGT 2006 [ 1162270406 ]
351: bsz=8192 blks=0 fs=ufs
351: write(2, " f s s n a p", 6) = 6
351: write(2, " : ", 2) = 2
351: write(2, " i o c t l", 5) = 5
351: write(2, " : e r r o r ", 8) = 8
351: write(2, " 2 2 : ", 4) = 4
351: write(2, " I n v a l i d a r g u".., 16) = 16
351: write(2, "\n", 1) = 1
351: <- main() = 2
351: -> _fini(0x0, 0x9f4c4, 0x11060, 0xff28bab4)
351: <- _fini() = 0
351: _exit(2)
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