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| author | Matthew Ahrens <mahrens@delphix.com> | 2014-06-06 12:14:51 -0800 |
|---|---|---|
| committer | Christopher Siden <chris@delphix.com> | 2014-06-06 13:14:51 -0700 |
| commit | df15e419cb7359ba56ddddab9045e438d89e7cbc (patch) | |
| tree | 2e272714e5ab0e03910f4dd65f2d6dce634f0129 /usr/src/lib/libzpool | |
| parent | 05d57413471eaaa425913a06edc2ab33ad9b05bc (diff) | |
| download | illumos-joyent-df15e419cb7359ba56ddddab9045e438d89e7cbc.tar.gz | |
4891 want zdb option to dump all metadata
Reviewed by: Sonu Pillai <sonu.pillai@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Garrett D'Amore <garrett@damore.org>
Diffstat (limited to 'usr/src/lib/libzpool')
| -rw-r--r-- | usr/src/lib/libzpool/common/kernel.c | 24 | ||||
| -rw-r--r-- | usr/src/lib/libzpool/common/sys/zfs_context.h | 2 |
2 files changed, 26 insertions, 0 deletions
diff --git a/usr/src/lib/libzpool/common/kernel.c b/usr/src/lib/libzpool/common/kernel.c index d030700415..418ef435b0 100644 --- a/usr/src/lib/libzpool/common/kernel.c +++ b/usr/src/lib/libzpool/common/kernel.c @@ -31,6 +31,7 @@ #include <stdlib.h> #include <string.h> #include <zlib.h> +#include <libgen.h> #include <sys/spa.h> #include <sys/stat.h> #include <sys/processor.h> @@ -51,6 +52,9 @@ char hw_serial[HW_HOSTID_LEN]; kmutex_t cpu_lock; vmem_t *zio_arena = NULL; +/* If set, all blocks read will be copied to the specified directory. */ +char *vn_dumpdir = NULL; + struct utsname utsname = { "userland", "libzpool", "1", "1", "na" }; @@ -394,6 +398,7 @@ int vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3) { int fd; + int dump_fd; vnode_t *vp; int old_umask; char realpath[MAXPATHLEN]; @@ -442,6 +447,17 @@ vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3) if (flags & FCREAT) (void) umask(old_umask); + if (vn_dumpdir != NULL) { + char dumppath[MAXPATHLEN]; + (void) snprintf(dumppath, sizeof (dumppath), + "%s/%s", vn_dumpdir, basename(realpath)); + dump_fd = open64(dumppath, O_CREAT | O_WRONLY, 0666); + if (dump_fd == -1) + return (errno); + } else { + dump_fd = -1; + } + if (fd == -1) return (errno); @@ -457,6 +473,7 @@ vn_open(char *path, int x1, int flags, int mode, vnode_t **vpp, int x2, int x3) vp->v_fd = fd; vp->v_size = st.st_size; vp->v_path = spa_strdup(path); + vp->v_dump_fd = dump_fd; return (0); } @@ -489,6 +506,11 @@ vn_rdwr(int uio, vnode_t *vp, void *addr, ssize_t len, offset_t offset, if (uio == UIO_READ) { iolen = pread64(vp->v_fd, addr, len, offset); + if (vp->v_dump_fd != -1) { + int status = + pwrite64(vp->v_dump_fd, addr, iolen, offset); + ASSERT(status != -1); + } } else { /* * To simulate partial disk writes, we split writes into two @@ -515,6 +537,8 @@ void vn_close(vnode_t *vp) { close(vp->v_fd); + if (vp->v_dump_fd != -1) + close(vp->v_dump_fd); spa_strfree(vp->v_path); umem_free(vp, sizeof (vnode_t)); } diff --git a/usr/src/lib/libzpool/common/sys/zfs_context.h b/usr/src/lib/libzpool/common/sys/zfs_context.h index 5be4df6f0f..5a19542b8f 100644 --- a/usr/src/lib/libzpool/common/sys/zfs_context.h +++ b/usr/src/lib/libzpool/common/sys/zfs_context.h @@ -389,8 +389,10 @@ typedef struct vnode { uint64_t v_size; int v_fd; char *v_path; + int v_dump_fd; } vnode_t; +extern char *vn_dumpdir; #define AV_SCANSTAMP_SZ 32 /* length of anti-virus scanstamp */ typedef struct xoptattr { |