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Fix "out of memory" error 

Drop the no_memory() call from zpool_in_use() when reading the
label fails and instead return the error to the caller.  This
prevents a misleading "internal error: out of memory" error
when the label can't be read.  This will result in is_spare()
returning B_FALSE instead of aborting, which is already safely
handled.

Furthermore, on Linux it's possible for EREMOTEIO to returned
by an NVMe device if the device has been low-level formatted
and not rescanned.  In this case we want to fallback to the
legacy scanning method and read any of the labels we can.

Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #13538
Closes #15747
This commit is contained in:
Brian Behlendorf 2024-01-12 12:35:29 -08:00 committed by GitHub
parent 363368c670
commit a1771d243a
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2 changed files with 14 additions and 5 deletions
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4
lib/libzfs/libzfs_import.c
View File

@ -291,10 +291,8 @@ zpool_in_use(libzfs_handle_t *hdl, int fd, pool_state_t *state, char **namestr,
*inuse = B_FALSE;
if (zpool_read_label(fd, &config, NULL) != 0) {
(void) no_memory(hdl);
if (zpool_read_label(fd, &config, NULL) != 0)
return (-1);
}
if (config == NULL)
return (0);

15
lib/libzutil/zutil_import.c
View File

@ -1056,10 +1056,21 @@ zpool_read_label(int fd, nvlist_t **config, int *num_labels)
case EINVAL:
break;
case EINPROGRESS:
// This shouldn't be possible to
// encounter, die if we do.
/*
* This shouldn't be possible to
* encounter, die if we do.
*/
ASSERT(B_FALSE);
zfs_fallthrough;
case EREMOTEIO:
/*
* May be returned by an NVMe device
* which is visible in /dev/ but due
* to a low-level format change, or
* other error, needs to be rescanned.
* Try the slow method.
*/
zfs_fallthrough;
case EOPNOTSUPP:
case ENOSYS:
do_slow = B_TRUE;