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Add a "zstream decompress" subcommand

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It can be used to repair a ZFS file system corrupted by ZFS bug #12762.
Use it like this:

zfs send -c <DS> | \
zstream decompress <OBJECT>,<OFFSET>[,<COMPRESSION_ALGO>] ... | \
zfs recv <DST_DS>

Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Allan Jude <allan@klarasystems.com>
Signed-off-by: Alan Somers <asomers@gmail.com>
Sponsored-by:  Axcient
Workaround for #12762
Closes #13256
This commit is contained in:
Alan Somers
2022-06-24 14:28:42 -06:00
committed by GitHub
parent 1c0c729ab4
commit ccf89b39fe
7 changed files with 425 additions and 5 deletions
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cmd/zstream/zstream.h
+4
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@@ -24,8 +24,12 @@
extern "C" {
#endif
extern void *safe_calloc(size_t n);
extern int sfread(void *buf, size_t size, FILE *fp);
extern void *safe_malloc(size_t size);
extern int zstream_do_redup(int, char *[]);
extern int zstream_do_dump(int, char *[]);
extern int zstream_do_decompress(int argc, char *argv[]);
extern int zstream_do_token(int, char *[]);
extern void zstream_usage(void);